Necklace, accessory, and brain stimulation device

Abstract

[Problem] To provide a necklace that is capable of stimulating the brain and is suitable for long-term use. [Solution] This necklace 100 is provided with an alpha wave generation body part 10 that generates an alpha wave pulsed current, a necklace wire 30 connected to the alpha wave generation body part 10, and an electrode 20 provided on a part of the necklace wire 30. The alpha wave generation body part 10 includes is provided with a pulsed current generation part 41 that generates an alpha wave pulsed current, and a filter 42 that is electrically connected to the pulsed current generation part 41 and attenuates a frequencies higher than alpha waves. The electrode 20 is fixed by electrode fixing members 25 (21, 22) connected to the necklace wire 30.

Description

Necklaces, accessories and brain stimulation devices

[0001] The present invention relates to a necklace, accessory, and brain stimulation device that can stimulate the brain. In particular, the present invention relates to a necklace that can generate alpha waves when worn. This application claims priority to Japanese Patent Application No. 2023-207318, filed on December 7, 2023, the entire contents of which are incorporated herein by reference.

[0002] Brain waves include various types of wavelengths, and are classified as gamma (γ) waves above 30 Hz, beta (β) waves between 14 and 30 Hz, alpha (α) waves between 7 and 14 Hz, theta (θ) waves between 4 and 7 Hz, and delta (δ) waves below 4 Hz (see, for example, Patent Document 1). Of these types of brain waves, gamma waves are often generated during anxiety or excitement, beta waves during thinking or tension, alpha waves during meditation, rest, and concentration, theta waves during drowsiness or a drowsy state, and delta waves during coma or sleep.

[0003] Alpha waves are further classified into three stages based on their wavelength: the first stage is at 12-13 Hz, when we are trying to relax; the second stage is at 10-12 Hz, when intuition and inspiration arise; and the third stage is at 8-10 Hz, known as "munen-mu-so," which is said to be more likely to appear when one reaches a state of emptiness. Furthermore, when measuring the brain waves of high-ranking Zen monks and people with extensive meditation experience, it was found that alpha waves from the frontal lobe are very prominent. Meanwhile, it is said that health problems often occur when people's mental state, such as when they are under a lot of stress, is affected.

[0004] Furthermore, in conventional neuroscience research, current stimulation has been used to improve symptoms of diseases related to brain activity (e.g., Patent Documents 1 to 3). Conventional techniques apply current stimulation to brain activity by applying a current in phase with the measured brain waves, without considering the phase of endogenous brain waves. That is, capacitive conduction causes a time lag between the brain wave potential source inside the brain and the brain wave reaching the detection position of an electroencephalograph placed on the outer surface of the head, resulting in a phase delay of the brain waves. Therefore, conventional methods may be insufficiently effective with current stimulation, or may even have the opposite effect if the current stimulation is out of phase with the endogenous brain waves. Therefore, the method of Patent Document 3 stimulates the brain with a signal corresponding to the phase shift of the observed brain waves.

[0005] JP 62-155863 A JP 2018-68511 A JP 2022-104316 A JP 2018-69004 A Utility Model Registration No. 3115353

[0006] Conventional technologies (for example, Patent Documents 1 to 3) involve placing electrodes on the head to detect brain waves, and although they can be used when one is in front of such a detection device, they are not suitable for use in everyday life (particularly while walking, doing housework, working, etc.). Since they are usable in such everyday situations, the present inventor developed a necklace-type device and disclosed it in Patent Document 4. The device disclosed in Patent Document 4 is a necklace-type device that emits and transmits alpha waves.

[0007] Patent Document 5 also discloses a forced brainwave induction device. This device stimulates the brain with a pulsed current of a specific frequency from outside the body, inducing it to that frequency. Specifically, a headphone-like device (headgear) is used, and the electrodes of the headgear are placed on the temples or front of the ears. The pulsed current is applied through the human body as a medium. The pulsed current then passes through the human muscle layer and skin surface, vibrating the muscles inside the body and causing cells to resonate. The device also includes an EEG filter to prevent harmful substances from entering the brain, but the electrical stimulation reaches brain tissue without being affected by the blood-brain barrier, preventing side effects.

[0008] The forced EEG induction device of Patent Document 5 applies a pulse current by contacting electrodes in a headphone-shaped attachment to the temples or front of the ears, making it inconvenient to wear all the time and too conspicuous, which is likely to interfere with daily life. On the other hand, the necklace-type device developed by the inventor of the present application (the device disclosed in Patent Document 4) does not have such inconveniences and is convenient as it interferes less with daily life.

[0009] However, the inventors of the present application have found the following problems in the course of their research and development. First, because the device disclosed in Patent Document 4 can be used at all times, the electrodes are in contact with the skin for long periods of time, and as a result, the gap between the electrodes and the tubes (necklace chains covered with silicone rubber tubes) that secure the electrodes becomes brittle, resulting in cases where the electrodes cannot be maintained in place. Furthermore, the device disclosed in Patent Document 4 applies a pulse current with a frequency of 10.8 Hz to the back of the neck, but in some cases this alone does not provide the best effect, and a solution has become necessary.

[0010] The present invention has been made in consideration of these points, and its main purpose is to provide a necklace, accessory, and brain stimulation device that can stimulate the brain and is suitable for long-term use.

[0011] The necklace according to the present invention comprises an alpha wave generating main body that generates an alpha wave pulse current, a necklace wire connected to the alpha wave generating main body, and an electrode attached to a part of the necklace wire. The alpha wave generating main body comprises a pulse current generating unit that generates the alpha wave pulse current, and a filter electrically connected to the pulse current generating unit that attenuates frequencies higher than alpha waves. The electrode is fixed by an electrode fixing member connected to the necklace wire.

[0012] In a preferred embodiment, the pulse current generating unit includes a semiconductor integrated circuit element that generates a pulse current. The filter is a low-pass filter that attenuates frequencies higher than alpha waves. A resin coating is formed on the surface of the necklace wire. A plurality of electrodes are provided on the necklace wire. An electrode fixing member is provided on both ends of each of the plurality of electrodes. The electrode fixing member connects each of the plurality of electrodes to the resin coating of the necklace wire so that there is no gap between them.

[0013] In a preferred embodiment, the electrode has a cylindrical shape. The electrode fixing member is composed of a hemispherical cup portion and a protrusion provided at the bottom of the cup portion for fixing the end of the electrode. The necklace wire is inserted into the center of the apex of the cup portion.

[0014] In a preferred embodiment, the hemispherical cup portion has a recess formed therein.

[0015] In a preferred embodiment, two electrodes are provided on the necklace wire. The protrusions of the electrode fixing member are arc-shaped members that follow the cylindrical shape of the electrodes. The electrode fixing member contacts one surface of the electrodes and the other surface of the electrodes to fix the electrodes.

[0016] In a preferred embodiment, the alpha wave generating main body includes a housing, a circuit board provided within the housing, a battery electrically connected to the circuit board, the semiconductor integrated circuit device, the low-pass filter, and an LED device mounted on the circuit board, and a window provided in the housing to transmit light from the LED device.

[0017] In a preferred embodiment, the device further includes a base on which the alpha wave generating main body is placed. The alpha wave generating main body is provided with a coil for wireless charging. When the alpha wave generating main body is placed on the base, the alpha wave generating main body can be wirelessly charged.

[0018] In a preferred embodiment, the battery, the circuit board, and the wireless charging coil are housed in a stacked state within the housing.

[0019] In a preferred embodiment, one end of the necklace wire is provided with a socket portion that is detachable from the alpha wave generating main body.

[0020] In a preferred embodiment, the necklace has a waterproof structure when the socket portion is attached to the alpha wave generating main body portion.

[0021] In a preferred embodiment, the alpha wave generating main body includes an adjustment mechanism for adjusting the length of the necklace wire.

[0022] In a preferred embodiment, the pulse current generating section includes a semiconductor integrated circuit device that generates a pulse current. The filter is a low-pass filter that attenuates frequencies higher than alpha waves. The semiconductor integrated circuit device includes a mode unit that switches between operating modes. The operating mode in the mode unit is at least one selected from the group consisting of a normal mode, an athlete mode, a study mode, a disease rehabilitation mode, a child mode, an adult mode, an elderly mode, and a relaxation mode.

[0023] In a preferred embodiment, the mode unit of the semiconductor integrated circuit device is provided with a timer section that controls the time for generating the alpha wave pulse current in the operation mode.

[0024] In a preferred embodiment, the mode unit of the semiconductor integrated circuit device is provided with a cumulative time calculation section that calculates the cumulative time for which the alpha wave pulse current is generated in the operation mode.

[0025] In a preferred embodiment, the alpha wave generating main body includes a communication unit capable of communicating with an external communication device, and the operation mode of the mode unit is switched by operating the external communication device.

[0026] In a preferred embodiment, the external communication device is a smartphone, and the operation mode of the mode unit is switched by an application installed on the smartphone.

[0027] In a preferred embodiment, the device further includes a base on which the alpha wave generating main body is placed. The alpha wave generating main body is provided with a coil for wireless charging. The alpha wave generating main body can be wirelessly charged when placed on the base. The base is configured to switch the operating mode of the mode unit.

[0028] In the method of using a necklace according to the present invention, the necklace is the necklace described above, and the method of using the necklace includes the steps of contacting the electrodes of the necklace with the skin of the user, and turning on the necklace to generate an alpha wave pulse current from the alpha wave generating main body.

[0029] The accessory according to the present invention is an accessory worn on the body of a user, and comprises an alpha wave generating main body that generates an alpha wave pulse current, a wire connected to the alpha wave generating main body, and an electrode provided on a part of the wire. The alpha wave generating main body comprises a pulse current generating unit that generates the alpha wave pulse current, and a filter electrically connected to the pulse current generating unit that attenuates frequencies higher than alpha waves. The electrode is fixed by an electrode fixing member connected to the wire.

[0030] In a preferred embodiment, the pulse current generating section of the alpha wave generating main body includes a semiconductor integrated circuit device that generates a pulse current. The filter is a low-pass filter that attenuates frequencies higher than alpha waves. The semiconductor integrated circuit device includes a mode unit that switches between operating modes. The operating mode of the mode unit is at least one selected from the group consisting of normal mode, athlete mode, study mode, disease rehabilitation mode, child mode, adult mode, elderly mode, and relaxation mode.

[0031] The brain stimulation device according to the present invention is a brain stimulation device for stimulating the brain of a user, and comprises an alpha wave generating main unit that generates an alpha wave pulse current, a wire connected to the alpha wave generating main unit, and an electrode provided on a part of the wire. The alpha wave generating main unit comprises a pulse current generating unit that generates the alpha wave pulse current, and a filter electrically connected to the pulse current generating unit that attenuates frequencies higher than alpha waves. The electrode is fixed by an electrode fixing member connected to the wire.

[0032] In a preferred embodiment, the pulse current generating section of the alpha wave generating main body includes a semiconductor integrated circuit device that generates a pulse current. The filter is a low-pass filter that attenuates frequencies higher than alpha waves. The semiconductor integrated circuit device includes a mode unit that switches between operating modes. The operating mode of the mode unit is at least one selected from the group consisting of normal mode, athlete mode, study mode, disease rehabilitation mode, child mode, adult mode, elderly mode, and relaxation mode.

[0033] In a preferred embodiment, the brain stimulation device is in the form of an accessory worn on the user's body.

[0034] In the necklace of the present invention, the alpha wave generating main unit, which generates alpha wave pulse current, is electrically connected to the pulse current generator and includes a filter that attenuates frequencies higher than alpha waves. The electrodes are secured to the necklace wire by an electrode fixing member. Therefore, the filter can cut harmonics (overtones) generated by the pulse current generator, thereby attenuating frequencies (noise) higher than alpha waves and allowing alpha waves to enter the user through the electrodes. This results in brain stimulation and more reliable alpha wave effects. Furthermore, since the electrodes and the necklace wire are made of different materials, securing the electrodes to the necklace wire can result in the electrodes becoming dislodged or displaced from their intended positions after prolonged use (e.g., prolonged use in daily life). However, in the present invention, the electrodes are secured to the necklace wire by an electrode fixing member, preventing such electrode problems (such as electrode performance degradation, dislodgment, or displacement). Therefore, the necklace of the present invention can provide a necklace that stimulates the brain and is suitable for long-term use.

[0035] 1 is a perspective view showing the configuration of a necklace 100 according to an embodiment of the present invention. FIG. 1 is a diagram illustrating how to wear the necklace 100 according to the embodiment. FIG. 2 is a diagram illustrating the state in which the necklace 100 according to the embodiment is worn. FIG. 3 is a diagram illustrating the state in which the necklace 100 according to the embodiment is placed on a mounting base (wireless charging base) 50. FIG. 4 is a diagram illustrating the back structure of the necklace 100 according to the embodiment. FIG. 5 is a block diagram schematically showing the configuration of the alpha wave generating main body 10. FIG. 6 is a diagram schematically showing the cross-sectional configuration of the alpha wave generating main body 10. FIG. 7 is a diagram schematically showing the state in which the necklace 100 is operating. FIG. 8 is a block diagram illustrating an example of the configuration of a circuit board 40. FIG. 9 is a block diagram illustrating an example of the configuration of the mounting base (wireless charging base) 50. FIG. 10 is a graph illustrating the operation of the LED 12 in the alpha wave generating main body 10. FIG. 11 is a graph illustrating the operation (error operation) of the LED 12 in the alpha wave generating main body 10. FIG. 12 is a graph illustrating the operation of the mounting base (wireless charging base) 50. FIG. 13 is a graph illustrating the operation (error operation) of the LED in the mounting base (wireless charging base) 50. 1 is a table showing a comparison between an example (necklace 100) and a comparative example (placebo product). FIG. 2 is a table showing a comparison between an example (necklace 100) and no necklace. FIG. 3 is a table showing the results of a muscle reflex test (front). FIG. 4 is a diagram showing how the muscle reflex test (front) was performed. FIG. 5 is a bar graph showing the results of the muscle reflex test (front). FIG. 6 is a table showing the results of the muscle reflex test (rear). FIG. 7 is a diagram showing how the muscle reflex test (rear) was performed. FIG. 8 is a bar graph showing the results of the muscle reflex test (rear). FIG. 9 is a table showing the results of a back strength test. FIG. 10 is a diagram showing how the back strength test was performed. FIG. 11 is a bar graph showing the results of the back strength test. FIG. 11 is a table showing the results of latissimus dorsi muscle activity measurement. FIG. 12 is a diagram showing how the latissimus dorsi muscle activity measurement was performed. FIG. 13 is a bar graph showing the results of the latissimus dorsi muscle activity measurement. FIG. 14 is a table showing the results of an electroencephalogram (EEG) measurement. FIG. 15 is a diagram showing how the electroencephalogram was measured. FIG. 16 is a bar graph showing the results of an EEG measurement. FIG. 17 is a diagram showing how the electroencephalogram was measured. 10 is a bar graph showing the results of the questionnaire (relaxation).

[0036] A preferred embodiment of the present invention will be described below with reference to the drawings. In the following drawings, for the sake of simplicity, components and parts that perform the same function are designated by the same reference numerals, and duplicated descriptions may be omitted or simplified. Furthermore, the dimensional relationships (length, width, thickness, etc.) in each drawing are basically intended to satisfy the dimensional relationships. Therefore, although it is possible to extract six-sided views from the drawings, they may not necessarily accurately reflect the actual dimensional relationships.

[0037] Furthermore, matters necessary for carrying out the present invention other than those specifically mentioned in this specification can be understood as design matters for a person skilled in the art based on the prior art in the relevant field. The present invention can be carried out based on the contents disclosed in this specification and drawings and the technical common sense in the relevant field. In addition, the present invention is not limited to the following embodiments.

[0038] Fig. 1 shows the configuration of a necklace 100 according to an embodiment of the present invention. Fig. 2 shows how the necklace 100 of this embodiment is worn. Fig. 3 shows the electrodes 20 (around the back of the neck) when the necklace 100 of this embodiment is worn by a user. Fig. 4 shows the necklace 100 of this embodiment placed on a mounting base 50, and Fig. 4 also shows the configuration of the front of the necklace 100 of this embodiment. Finally, Fig. 5 shows the configuration of the back of the necklace 100 of this embodiment.

[0039] The necklace 100 of this embodiment is composed of an alpha wave generating main body 10 that generates an alpha wave pulse current, a necklace wire 30 connected to the alpha wave generating main body 10, and an electrode 20 provided on a part of the necklace wire 30. In the configuration of this embodiment, as shown in Figures 1 and 3, the electrode 20 is fixed by an electrode fixing member 25 (21, 22) connected to the necklace wire 30.

[0040] FIG. 6 is a block diagram showing the configuration of the alpha wave generating main unit 10 in the necklace 100 of this embodiment. As shown in FIG. 6, the alpha wave generating main unit 10 of this embodiment is composed of a pulse current generating unit 41 that generates an alpha wave pulse current and an alpha wave transmission filter, an alpha wave selection filter 42 that is electrically connected to the pulse current generating unit 41 and attenuates frequencies higher than alpha waves. The pulse current generating unit 41 of this embodiment includes a semiconductor integrated circuit device (microcomputer, IC) that generates the pulse current, and is composed, for example, of a circuit board on which such a semiconductor integrated circuit device (microcomputer, IC, MPU) is mounted. Note that the pulse current generating unit 41 is not limited to a semiconductor integrated circuit device (microcomputer, IC), and other devices (e.g., a quartz oscillator) may also be used as long as they are capable of generating an alpha wave pulse current. In this embodiment, the pulse current generating unit 41 is constructed using a semiconductor integrated circuit device (microcomputer, IC) because it is easier to control the frequency.

[0041] In the configuration of this embodiment, the filter 42 is a filter that selectively passes frequencies in the alpha wave range. The filter (alpha wave transmission filter) 42 of this embodiment is, for example, a low-pass filter (LPF) that attenuates frequencies higher than alpha waves. The filter 42 of this embodiment may also be a band-pass filter that selectively passes alpha wave frequencies. Here, the term "low-pass filter" is used to refer to band-pass filters that cut both frequencies higher and lower than alpha waves, since they cut frequencies higher than alpha waves. The low-pass filter may also be referred to as a "high-cut filter." The pulse current generator (IC) 41 and the filter (low-pass filter) 42 are disposed on a circuit board 40. In the configuration of this embodiment, an LED (light-emitting diode) 44 is disposed on the circuit board 40. The circuit board 40 is also connected to an output terminal 43. The circuit board 40 is also electrically connected to a battery 45 (e.g., a secondary battery or a primary battery).

[0042] The alpha wave generating main unit 10 generates a pulsed current with an alpha wave frequency (8 hertz (Hz) to 13 hertz (Hz) or 7 Hz to 14 Hz), and the alpha wave generating main unit 10 of this embodiment is a component that generates an alpha wave pulsed current with a frequency of 10.8 Hz (±1 Hz). The 10.8 Hz alpha wave pulsed current belongs to the 10-12 Hz range of alpha wave wavelengths (the second stage range) where intuition and inspiration are born. Furthermore, the human body's characteristic state of relaxed brain waves (alpha waves) is what allows high performance, such as runner's high or getting into the zone, and also secretes serotonin, which stimulates the secretion of male hormones, female hormones, and growth hormones. The necklace 100 of this embodiment selects 10.8 Hz, which is the average alpha wave from ages 10 to 20, when serotonin is most secreted.

[0043] As shown in FIG. 1 , the alpha wave generating main body 10 of this embodiment includes a housing 11, which is provided with a window (light-emitting portion) 12 that displays light from an LED (or other light-emitting element). The housing 11 of this embodiment is made of resin, such as polycarbonate (PC). The resin material constituting the housing 11 may be other than polycarbonate (PC) (e.g., polypropylene, polyethylene, polystyrene, vinyl chloride resin, ABS resin, epoxy resin, PET, acrylic, etc.). The window 12 of this embodiment is formed by providing a translucent or non-translucent resin in an opening in the housing 11. When the necklace 100 of this embodiment is in operation, the window (LED light-emitting portion) 12 emits light in red or blue (or white, yellow, green, etc.).

[0044] The necklace wire 30 is a wire with a conductor inside. A resin coating 31 is formed on the surface of the necklace wire 30. In the configuration of this embodiment, the necklace wire 30 is a wire in which a metal (e.g., copper, aluminum, etc.) conductor is coated with an insulator (e.g., rubber, resin). In a preferred example, the necklace wire 30 of this embodiment uses a wire in which a silicone rubber coating tube is provided on the outside of a metal conductor. The necklace 100 of this embodiment is waterproof (waterproof for everyday use), and the waterproof effect is enhanced by coating the metal conductor with a waterproof material (rubber, resin). In a preferred example, the silicone rubber coating tube has the function of protecting the alpha wave pulse current flowing through the conductor from external noise.

[0045] One end of the necklace wire 30 in this embodiment is permanently fixed to the alpha wave generator main unit 10. As shown in FIG. 1 , the housing 11 of the alpha wave generator main unit 10 in this embodiment is composed of a cylindrical central portion 11a, a tapered portion 11b continuing from the central portion 11a, and a wire fixing portion 16 located at the tip of the tapered portion 11b. The wire fixing portion 16 in this embodiment is made of an elastic material or rubber (e.g., nitrile rubber (NBR)). The necklace wire 30 extends from the center of the wire fixing portion 16, and the wire fixing portion 16 is provided to seal the alpha wave generator main unit 10 to achieve the waterproof (daily life waterproof) function of the necklace 100. Note that daily life waterproofing (waterproof for daily life, 2-3 atmospheres) is effective against "water splashes" that are expected in daily life, such as when holding an umbrella in light rain or getting slightly wet when sweating or washing your face.

[0046] In this embodiment, the other end of the necklace wire 30 is provided with a socket portion 15 that can be detached from the alpha wave generating main body 10. As shown in FIG. 2, the detachable socket portion 15 is configured to be insertable into the end (recess) of the alpha wave generating main body 10. Specifically, the socket portion 15 includes an insertion portion 15a and a switch portion 15b. When the switch portion 15b of the socket portion 15 is pressed with a finger in the state shown in FIG. 1, the socket portion 15 is released as shown in FIG. 2. Furthermore, when the insertion portion 15a of the socket portion 15 is inserted into the recess of the alpha wave generating main body 10 (housing 11) in the state shown in FIG. 2, the state shown in FIG. 1 (worn state, fixed state) is achieved. The socket portion 15 is provided with a wire fixing portion 16, and the necklace wire 30 extends from the center of the wire fixing portion 16.

[0047] The length of the necklace wire 30 in this embodiment is, for example, 300 mm to 700 mm (in one example, the length from the tip of the socket portion 15 to the end of the housing 11 of the alpha wave generating main body portion 10 is 500 mm (±50 mm)). The thickness (diameter) of the necklace wire 30 is, for example, 50 mm (±20 mm). However, the length and thickness (diameter) of the necklace wire 30 can be appropriately selected depending on the intended use and design (design conditions).

[0048] In the configuration of this embodiment, an electrode 20 is provided on a portion of the necklace wire 30. The electrode 20 is electrically connected to the conductor of the necklace wire 30. The electrode 20 of this embodiment is made of metal. In a preferred example, the electrode 20 is made of stainless steel (or aluminum) so that it is resistant to rust caused by sweat or rain. The electrode 20 of this embodiment has a cylindrical (or columnar) shape. The diameter of the electrode 20 is larger than the diameter of the necklace wire 30 so that the electrode 20 can relatively easily come into contact with the user's skin. The diameter of the electrode 20 of this embodiment is, for example, 8 mm (±3 mm). The length of the electrode 20 is, for example, 25 mm (±5 mm). However, the diameter and length of the electrode 20 can be appropriately selected depending on the intended use and design (design conditions).

[0049] In the configuration of this embodiment, multiple electrodes 20 are provided, and in the example shown, two electrodes 20 are arranged on opposite sides of the alpha wave generating main body 10. In a preferred example, the electrodes 20 are arranged in symmetrical positions. In the example shown, the distance from each of the two electrodes 20 to the alpha wave generating main body 10 (the length of the necklace wire 30) is the same (for example, 150 mm (±20 mm). Furthermore, the distance between one electrode 20 (first electrode) and the other electrode 20 (second electrode) (the length of the necklace wire 30) is 40 mm (±20 mm). It is possible to provide three or more electrodes 20, or in some cases only one electrode 20 is provided.

[0050] 1 and 3, the electrodes 20 (first electrode, second electrode) are fixed to the necklace wire 30 by an electrode fixing member 25. The electrodes 20 (first electrode, second electrode) are connected to the surface (resin coating, silicone rubber tube) 31 of the necklace wire 30 by the electrode fixing member 25 so that there is no gap between them. In this embodiment, the fixing member 25 is made of a resin material, but other insulating materials may be used.

[0051] The electrode fixing member 25 of this embodiment is composed of a hemispherical cup portion 21 and a protrusion 22 provided on the bottom of the cup portion 21. The protrusion 22 is provided on the cup portion 21 so as to fix the end of the electrode 20. The necklace wire 30 is inserted into the center of the apex of the cup portion 21. Here, the bottom of the cup portion 21 refers to the portion located below the center of the apex (top) of the cup portion 21, and does not mean the bottom in the direction of gravity (vertical direction). Furthermore, the hemispherical shape of the cup portion 21 is not limited to a hemisphere (half of a sphere) in the geometric sense, but may be a shape (tapered shape) that fills the diametric gap between the electrode 20 (large diameter) and the necklace wire 30 (small diameter).

[0052] In this embodiment, the protrusion 22 of the electrode fixing member 25 is an arc-shaped member (a curved strip-shaped member or a curved rectangular member) that conforms to the cylindrical shape of the electrode 20. In this embodiment, one electrode fixing member 25 is composed of one cup portion 21 and two protrusions 22. The electrode fixing member 25 (protrusions 22) contacts one surface (e.g., the upper surface) and the opposite surface (e.g., the lower surface) of the electrode 20 to fix the electrode 20 to the necklace wire 30 (31). In this embodiment, the electrode fixing member 25 is provided with two protrusions 22, but it may be provided with one protrusion (annular member), or with three or more protrusions 22. In addition, a recess 23 is formed in the cup portion 21 of the electrode fixing member 25 in the illustrated example. By forming the recess 23 in the cup portion 21, the thickness of a portion of the cup portion 21 is reduced, giving the cup portion 21 a spring function (elasticity). As a result, even if the electrode 20 (metal) and the electrode fixing member 25 (resin) are made of different materials, the spring function (elasticity) can ensure stable fixing.

[0053] The material (metal) of the electrode 20 in this embodiment and the material of the necklace wire 30 (31) are different materials, with different thermal expansion coefficients and different rates of deterioration. Therefore, if one were to simply place and fix the electrode 20 (metal) on the necklace wire 30 (31), the electrode may come off or shift from its designated position after prolonged use (e.g., prolonged use in daily life). On the other hand, in the configuration of this embodiment, the electrode 20 is fixed to the necklace wire 30 by the electrode fixing member 25, so such electrode problems (deterioration of electrode performance, coming off, shifting, etc.) can be prevented. Therefore, the structure (fixing structure) of the electrode 20 can be made suitable for long-term use.

[0054] As shown in FIG. 4 , the necklace 100 of this embodiment can be provided with a base 50 on which the alpha wave generating main body 10 is placed. The base 50 of this embodiment is a wireless charging base capable of wireless charging. In this configuration, the alpha wave generating main body 10 has a built-in secondary battery (e.g., a lithium polymer battery) for driving the main body 10 and a coil for wireless charging. The base 50 (wireless charging base) also has a wireless charging coil, allowing the alpha wave generating main body 10 to be charged by placing it on the base 50. A power line 52 (such as a power cord or USB cable) can be attached to the base 50, and power can be obtained through this power line 52. The base 50 also has an illuminating window (LED light-emitting unit) 55 that indicates the operating status. The flashing light of this illuminating window allows users to confirm operations such as charging.

[0055] By adapting the necklace 100 of this embodiment to wireless charging specifications, it is possible to omit the charging terminals, thereby making it possible to create a structure that is more suitable for waterproofing. Note that as long as the necklace 100 has a waterproof structure, it is not limited to a wireless charging specification, and it may be configured to be charged by connecting a power line, or may be configured to use a primary battery and not be charged.

[0056] FIG. 7 shows a schematic cross-sectional view of an example of the alpha wave generating main body 10 of this embodiment. In this configuration, a circuit board 40 is disposed within the housing 11 of the alpha wave generating main body 10. Mounted on the circuit board 40 are a semiconductor integrated circuit device (pulse current generator, microcomputer, IC) 41, electronic components and circuits 49 constituting a filter (low-pass filter) 42, and an LED element 44. The filter (low-pass filter) 42 can be constructed using an electronic component chip or circuit for a low-pass filter. A battery (lithium-ion secondary battery) 45 electrically connected to the circuit board 40 is also provided within the housing 11. Additionally, a coil 47 is provided within the housing 11 for electromagnetic induction connection with the coil of the mounting base 50 (wireless charging base).

[0057] In the configuration of this embodiment, the battery 45, circuit board 40, and coil (wireless charging coil) 47 are stored in a stacked state within the housing 11. Specifically, in the illustrated example, the battery 45 (preferably a lithium polymer battery) is disposed above the circuit board 40. To account for expansion of the battery 45 (expansion due to heat during operation), a gap D (e.g., 1.2 mm ± 1 mm) is provided between the battery 45 and the housing 11. A buffer material (e.g., low-resilience sponge) 46 is provided below the battery 45 to mitigate the effects of battery 45 expansion. The coil (wireless charging coil) 47 is disposed below the circuit board 40. A spacer member 48 is provided on the circuit board 40 to ensure space for the coil 47. This stacked storage allows the alpha wave generating main body 10 (housing 11) to be made smaller (thinner), thereby reducing the burden of wearing it constantly (around the neck) in daily life.

[0058] The housing 11 is also provided with an insertion recess 19 into which the socket 15 is inserted. In the configuration of this embodiment, a magnet 18 is disposed in the socket 15. An element (e.g., a Hall IC) that detects the magnet 18 of the socket 15 is provided on the housing 11 side. The element (e.g., a Hall IC) that detects the magnet 18 can detect whether the wire 30 is connected (whether the socket 15 is inserted and fixed).

[0059] Next, an example of the configuration and operation of the necklace 100 of this embodiment will be described with reference to Figures 8 to 13. Note that this description is merely illustrative, and it will be readily apparent to those skilled in the art that other configurations and operations may be employed.

[0060] FIG. 8 shows a combination of the necklace 100 of this embodiment and the placement stand (wireless charging stand) 50, and schematically shows the state in which alpha wave frequency (10.8 Hz) is emitted from the electrodes 20.

[0061] 9 is a block diagram illustrating the configuration of the alpha wave generating main body 10 (circuit board 40) of this embodiment. The circuit board of the charging stand (wireless charging stand) 50 is also shown, along with the alpha wave generating main body 10.

[0062] As shown in Figure 9, various elements are arranged on the circuit board 40 that constitutes the alpha wave generator main body 10. Specifically, the circuit board 40 is equipped with a microcomputer 41, a filter (low-pass filter) 42, a CRYSTAL (crystal oscillator, 8MHz crystal (quartz crystal resonator)), a voltage dividing resistor, LEDs 44 (red and white), a Hall IC, a charging IC, a rectifier, an LDO (Low Drop Out, LDO regulator), a POR (Power On Reset, POR circuit), a thermistor, and a magnet. A battery 45 is also electrically connected to the circuit board 40. A coil 47 is connected to the rectifier of the circuit board 40.

[0063] In the circuit board 40 shown in FIG. 9 , a microcomputer 41 functions as a pulse current generator 41 (a signal generator with a predetermined frequency) that generates an alpha wave pulse current (10.8 Hz or 10.85 Hz). This pulse current passes through a filter 42 and is output as a signal from an output terminal 43, then flows through the necklace wire 30 to the electrode 20. The output frequency (sine wave) of the alpha wave pulse current in this example is a minimum of 10.80 Hz, a maximum of 10.89 Hz, and an average of 10.85 Hz. The output voltage of the alpha wave pulse current in this example is, for example, 30 μV to 120 μV, preferably 55 μV to 60 μV (±5%). It has been confirmed that the necklace 100 of this embodiment is effective when the alpha wave voltage is 55 μV, but the effect may be weakened when the air (outside air) is dry. Experiments have confirmed that the necklace 100 of this embodiment is effective even in dry air when the voltage of the alpha waves is 60 μV (±5%). The output current is 0.003 microamperes (0.003 μA) (±5%).

[0064] Here, harmonics (so-called overtones) may be generated as noise in the alpha wave pulse current generated by the pulse current generator 41 (microcomputer, MCU). For example, the overtone (second overtone) of 10 MHz alpha waves is 20 MHz, which is in the beta wave range and may potentially induce a state of tension. Furthermore, the third overtone of 10 MHz alpha waves is 30 MHz, which is in the beta to gamma wave range and may potentially induce anxiety or agitation. While such noise may have little effect in a temporary test such as an EEG test, since the necklace 100 of this embodiment is designed to be worn constantly, it is desirable to minimize the possibility of such an effect, even if it does not actually have an effect. In the configuration of this embodiment, a filter (low-pass filter) 42 that attenuates frequencies higher than alpha waves is provided to cut out noise that may have such an effect, ensuring the beneficial effects of the necklace 100 of this embodiment. In this embodiment, for example, a filter (low-pass filter) 42 that cuts frequencies of 15 Hz or higher can be provided, but the frequency or higher (frequency beyond which) to cut can be determined by creating a predetermined filter based on an appropriate filter design in accordance with the specific specifications, conditions, and characteristics, and then determining the frequency to be cut (the frequency to be significantly attenuated).

[0065] FIG. 10 is a block diagram illustrating the configuration of the circuit board of the mounting base (wireless charging base) 50 of this embodiment. As shown in FIG. 10, a microcomputer (MPU), thermistor, LED (red), Hall IC, current detection resistor, coil driver, matching network (matching circuit), and POR (Power On Reset, POR circuit) are arranged. The microcomputer is equipped with a one-hour charging timer function. The circuit board of the mounting base 50 is connected to a coil (electromagnetic induction coil - non-contact charging / wireless coil), and power is supplied via this coil to the coil 47 of the alpha wave generating main body 10 (circuit board 40) shown in FIG. 9 by electromagnetic induction, thereby performing wireless power supply.

[0066] FIG. 11 shows the LED behavior when the power is on and when the necklace 100 is in operation. As shown in FIG. 11 , once the wire 30 is connected and the power is turned on, the white LED 44 and the red LED 44 flash alternately for two seconds after the power is turned on, informing the user that the necklace 100 is in proper operation. During operation, the white LED 44 flashes (here, two flashes) every predetermined second (e.g., every five seconds) to indicate that the necklace 100 is operating normally. When the remaining battery charge in the battery 45 is low (below 3.5 V), the red LED 44 flashes (here, one flash) every predetermined second (e.g., every five seconds) to indicate that the battery is low.

[0067] Figure 11 shows the LED behavior when an error occurs. When an error occurs, if the temperature of the circuit board 40 exceeds 60°C, the red LED 44 flashes to alert the user. At this time, the 10.8 Hz transmission stops. The error can be cleared by disconnecting and reconnecting the wire 30, and the system (circuit) is designed to do so.

[0068] 13 is a graph illustrating the operation of the LED of the stand (wireless charging stand) 50. When the power line (USB) 52 of the stand 50 is connected and the alpha wave generating main body 10 is placed on the stand 50, power supply / charging is performed. Power supply / charging is performed for a predetermined time (here, one hour) using a timer. When the power line (USB) 52 of the stand 50 is connected, the LED (red) 44 is lit.

[0069] 11 shows the LED behavior when an error occurs in the mounting table 50. When an error occurs, the LED (red) 44 flashes to alert the user when an overcurrent is detected and / or when the temperature of the circuit board reaches 60°C or higher. In this case, power supply is stopped. The error can be cleared by unplugging and plugging in the power line (USB), and the system (circuit) is configured for this purpose.

[0070] In the necklace 100 of this embodiment, the alpha wave generating main unit 10, which generates the alpha wave pulse current, is equipped with a filter 41 (a low-pass filter that attenuates frequencies higher than alpha waves) electrically connected to a pulse current generating unit (microcomputer, MPU) 41, and the electrodes 20 are fixed to the necklace wire 30 by an electrode fixing member 25. Therefore, the harmonics (overtones) generated by the pulse current generating unit can be cut by the filter (low-pass filter) 41, and therefore frequencies (noise) higher than alpha waves can be attenuated, allowing the alpha wave frequency to be input to the user through the electrodes 20, which in turn stimulates the brain and more reliably produces the effects of alpha waves. In addition, the material (metal) of the electrode 20 and the material of the necklace wire 30 (31) are different materials, and when attempting to secure the electrode 20 (metal) to the necklace wire 30 (31), the electrode may become detached or shift from its predetermined position after extended use (for example, extended use in daily life). However, in the configuration of this embodiment, the electrode 20 is secured to the necklace wire 30 by the electrode securing member 25, preventing such electrode problems (deterioration of electrode performance, detachment, shifting, etc.). Therefore, the necklace 100 of this embodiment makes it possible to realize a necklace that is capable of stimulating the brain and is suitable for extended use.

[0071] Next, the effects of the necklace 100 of this embodiment will be described with reference to Figures 15 to 35. In order to measure the effects of the necklace 100 of this embodiment through experiments, the necklace 100 of this embodiment (Example) was compared with a placebo product (Comparative Example) that has the same shape as the necklace 100 but no function, and the normal state (unworn). The experiments carried out included a muscle reflex test (forward), a muscle reflex test (backward), measurement of back muscle strength, measurement of latissimus dorsi muscle activity, and electroencephalogram (EEG).

[0072] A crossover single-blind test (only the subjects were blinded) was conducted on 14 subjects wearing the Example and Comparative Example (placebo product). The subjects were blinded and did not know which product was the Example, but to avoid habituation, the test was conducted by first wearing the product with odd and even subject numbers.

[0073] In order to ensure that the test (measurement) was carried out under the same conditions, a rest period of at least 3 minutes was given before each measurement, and the measurement was carried out after the subjects had rested. Specifically, after the measurement without the device being worn (normal state), the products (Examples and Comparative Examples) were handed over, and the subjects were allowed to rest for 3 minutes after wearing the device before the measurement began.

[0074] Figure 15 shows the results of comparing the Comparative Example with the Example (Table 1). Figure 16 shows the results of comparing the non-attached case with the Example (Table 2). "Mean" is the measured value, "SD" is the standard deviation, and "SP", "S / P (%)", and "p-value" are statistical terms. Further explanation will be given below.

[0075] 17 to 19 show the results of the muscle reflex test (front) (table), the appearance of the muscle reflex test (front), and the results of the muscle reflex test (front) (graph), respectively. As shown in Fig. 18, in the muscle reflex test (front), the measurer (weight 90 kg) applied a uniform downward force to the subject's clasped hands, enough to lift one foot off the ground, and measured the time until the subject could no longer maintain a vertical position.

[0076] As shown in FIGS. 17 and 19, the value of the comparative example was 1.82 (seconds) while the value of the example was 9.31 (seconds), and a statistically significant difference was observed.

[0077] 20 to 22 show the results of the muscle reflex test (rear) (table), the appearance of the muscle reflex test (rear), and the results of the muscle reflex test (rear) (graph), respectively. As shown in Fig. 20, in the muscle reflex test (rear), the measurer (weight 90 kg) applied a uniform downward force to the subject's clasped hands, enough to lift one foot off the ground, and measured the time until the subject could no longer maintain a vertical position.

[0078] As shown in FIGS. 20 and 22, the value of the comparative example was 1.70 (seconds) while the value of the example was 8.66 (seconds), and a statistically significant difference was observed.

[0079] 23 to 25 show the results of the back muscle strength test (table), the state of the back muscle strength test, and the results of the back muscle strength test (graph), respectively. As shown in Fig. 24, measurements were taken using a dedicated device for measuring back muscle strength.

[0080] As shown in FIGS. 23 and 25, the value of the comparative example was 94.1 (kg) while the value of the example was 106.8 (kg), and a statistically significant difference was observed.

[0081] 26 to 28 show the results of the measurement of latissimus dorsi muscle activity (table), the state of the measurement of latissimus dorsi muscle activity, and the results of the measurement of latissimus dorsi muscle activity (graph), respectively. As shown in Fig. 27, measurements were taken under the same load using a dedicated device for measuring back muscle strength.

[0082] As shown in FIGS. 26 and 28, the value of the comparative example was 0.033245 (mv), while the value of the example was 0.033463 (mv), and a statistically significant difference was observed.

[0083] 29 to 31 show the results of EEG measurement (table), the state of EEG measurement, and the results of EEG measurement (graph), respectively. As shown in Fig. 30, measurements were taken under the same load conditions using dedicated equipment for EEG measurement.

[0084] As shown in FIGS. 29 and 31, the value of the comparative example was 35.42768 (meditation), while the value of the example was 50.67913 (meditation), and a statistically significant difference was observed.

[0085] After each measurement, participants were asked to complete a questionnaire to evaluate muscle reflex tests, back strength, and relaxation effect (secondary evaluation). A 10-point scale was used, ranging from 1 to 10, with higher scores indicating a better tendency. The results are shown in Figures 32 to 35. Figures 32 to 35 are a table of the results of the three-item questionnaire, a graph of the results of the questionnaire (muscle reflex), a graph of the results of the questionnaire (back muscles), and a graph of the results of the questionnaire (relaxation), respectively.

[0086] As shown in Figures 32 to 35, the product (necklace) of the example had higher scores than the comparative example in all three items.

[0087] From the results of these experiments, it was confirmed that wearing the necklace 100 (example) of this embodiment resulted in statistically significant differences in all measurement items, including muscle reflex tests (forward / backward), back strength, latissimus dorsi activity, and electroencephalography (meditation). Differences were also evident in the questionnaire (secondary evaluation / subjective evaluation by subjects), confirming significant improvements compared to not wearing the necklace and wearing the comparative example (placebo product).

[0088] In particular, the results of the muscle reflex test, which showed a significant difference, clearly showed that the iliopsoas muscles (inner muscles) around the lumbar vertebrae (which are activated only by the S-2 parasympathetic nerve) were strengthened (the latissimus dorsi muscle was used as a substitute because the electromyograph cannot measure deep areas). It can be inferred that by using the embodiment (necklace 100), the parasympathetic nerve becomes dominant by passing a weak current through the medulla oblongata, which has a positive effect on physical function and vibration control. It can also be inferred that the "secretion of serotonin," which is a characteristic of a parasympathetic nerve dominance state, leads to pain relief, suppression of irritability, and increased concentration.

[0089] The configuration of this embodiment realizes a necklace 100 that can stimulate the brain and is suitable for long-term use. However, the technical concept of this embodiment can be applied not only to the necklace 100 but also to any other device that allows the electrodes 20 to contact the skin. Specifically, the configuration of the above-described embodiment (the configuration of the necklace 100) can be applied to accessories (items worn on the body), specifically, bracelets (including watches) and anklets. Furthermore, even if not called an accessory (such as a necklace), the configuration of the above-described embodiment (the configuration of the necklace 100) can be made into a product (wearing device) as a brain stimulation device. While wearing the necklace 100 close to the head is more effective, it is also possible to stimulate the brain through the skin at a location such as the wrist. Experiments using the necklace 100 of this embodiment around the wrist confirmed the effects of the necklace 100. In addition to the test results of the above-described example, when three Parkinson's disease patients wore the necklace 100, all three patients stopped trembling in their hands and feet and were able to walk more smoothly within about five minutes. It was also confirmed that the patients' limbs became stronger and they were able to lift heavy objects. Furthermore, when the Necklace 100 was removed, the tremors returned within about five minutes, suggesting that it has the same effect as DBS deep brain stimulation therapy. Furthermore, when patients with eosinophilic granulomatosis with polyangiitis (EGPA), a type of collagen disease, wore the Necklace 100, they were able to walk without a cane. Furthermore, there are also results showing that wearing the Necklace 100 for an extended period of time caused thinning hair to grow back.

[0090] The necklace 100 (accessory, brain stimulation device) of this embodiment can also be modified as follows. In the configuration of this embodiment, the necklace 100 can be configured to allow the length of the necklace wire 30 to be adjusted. As such a configuration, the alpha wave generating main body 10 can be provided with an adjustment mechanism for adjusting the length of the necklace wire 30. The mechanism for adjusting the length of the necklace wire 30 can be a mechanism for winding the necklace wire 30, allowing the necklace wire 30 to be adjusted by winding it. Alternatively, the length adjustment mechanism for the necklace wire 30 can be a mechanism for pushing out lipstick, which lengthens or shortens the necklace wire 30. Furthermore, the mechanism can be configured to allow necklace wires 30 of different lengths to be replaced, allowing the length of the necklace wire 30 to be adjusted. Even when an adjustment mechanism for adjusting the length of the necklace wire 30 is provided, it is preferable that the necklace 100 (or the alpha wave generating main body 10) have a waterproof structure (a substantially sealed structure).

[0091] Furthermore, in the necklace 100 (accessory, brain stimulation device) of the above-described embodiment, the pulse current generating unit 41 shown in FIG. 6 includes a semiconductor integrated circuit device (such as a microcomputer, IC, or "41" in FIG. 9) that generates a pulse current, and the semiconductor integrated circuit device can be equipped with a mode unit that switches between operating modes. The operating mode of the mode unit can be at least one selected from the group consisting of normal mode, athlete mode, study mode, disease rehabilitation mode, child mode, adult mode, elderly mode, and relaxation mode. The mode unit (operation mode switching unit) that switches between operating modes can be implemented as software by executing a program that performs such an operation on the semiconductor integrated circuit device. Alternatively, the mode unit (operation mode switching unit) that switches between operating modes can also be implemented as hardware.

[0092] In one example of this embodiment, the normal mode is a standard operating mode (a standard pulse current generation / operation mode) and is typically applicable to everyday life in general. The athlete mode is an operating mode suitable for improving athletic ability. The study mode is an operating mode suitable for improving concentration for studying. The disease rehabilitation mode is an operating mode suitable for alleviating symptoms of a specific disease (e.g., pain, leg immobility) for people with that disease. The child mode is a mode suitable for developing children's abilities and improving concentration. The adult mode is a mode suitable for developing adults' abilities and improving concentration. The elderly mode is a mode suitable for developing elderly people's abilities and improving concentration. Since the average amount of alpha waves (10.8 Hz) between the ages of 10 and 20, when serotonin is most secreted, is relatively lower than when people were younger, it is preferable to select a mode (e.g., current, voltage, etc. for generating alpha waves) that takes this into consideration. The relaxation mode is a mode suitable for relaxation, such as mindfulness or meditation. The mode unit of the semiconductor integrated circuit device in this embodiment has the function of switching between at least two of the above operating modes, for example, between a normal mode and a study mode. Alternatively, the mode unit in this embodiment has the function of switching between a normal mode, a child mode, an adult mode, and an elderly mode. Furthermore, the mode unit in this embodiment has the function of switching between a normal mode, a study mode, and an athlete mode, for example, for students and young people. Alternatively, the mode unit in this embodiment does not have a normal mode, but has the function of switching between other operating modes (e.g., a disease rehabilitation mode, an elderly mode, etc.). In actual applications, the operating mode (elderly mode) conditions (e.g., the output, voltage / current, time, etc. of the alpha wave pulse current) may be appropriately set based on the average values ​​of a subject (e.g., elderly people), or the conditions (e.g., the output, voltage / current, time, etc. of the alpha wave pulse current) may be appropriately set based on the characteristics of an individual (e.g., a user of the necklace 100 (accessory, brain stimulation device) of this embodiment).

[0093] Furthermore, the mode unit of this embodiment can be provided with a timer that controls the duration of generation of the alpha wave pulse current in the operating mode. Such a timer can be implemented as software by running a program that performs such operation on a semiconductor integrated circuit device. Alternatively, the timer can be implemented as hardware. Using such a timer is convenient because it stops the alpha wave pulse current after a set period of time, eliminating the need to manually stop operation. It also contributes to preventing battery consumption (e.g., lithium ion secondary battery 45 (see FIG. 7 )) of the necklace 100 (accessory, brain stimulation device) of this embodiment. Furthermore, when used to improve concentration while studying, the timer can be used to conveniently control study time (e.g., 30 minutes, 45 minutes, etc.). Furthermore, when used for athletic training, the timer can be used to conveniently control training time (e.g., 30 minutes, 45 minutes, etc.). The timer can also be configured (implemented by a program) to emit a sound or vibration when the timer expires.

[0094] The mode unit of the semiconductor integrated circuit device of this embodiment may also be provided with a cumulative time calculation unit that accumulates the time for which alpha wave pulse current is generated in the operating mode. Such a cumulative time calculation unit can be implemented as software by running a program that performs such operation on the semiconductor integrated circuit device. Alternatively, the cumulative time calculation unit can also be implemented as hardware. By providing and using such a cumulative time calculation unit, it is possible to conveniently determine the length of time for which the alpha wave pulse current has been flowing. The cumulative time calculation unit has the function of calculating and displaying the total usage time, as well as the daily usage time, the weekly usage time, the monthly usage time, etc. It may also have the function of displaying comparisons with the previous day, the previous week, and the previous month.

[0095] Additionally, the necklace 100 (accessory, brain stimulation device) of this embodiment may include a communication unit capable of communicating with an external communication device. For example, the alpha wave generating main body 10 of this embodiment may include a communication unit (wireless communication device) capable of communicating with an external communication device. Such a communication unit may be, for example, a device that realizes Bluetooth communication (a Bluetooth device) or a device that realizes Wi-Fi (Wireless Fidelity) communication (a Wi-Fi device). The operating mode of the mode unit may be configured to be switched by operating the external communication device. In this exemplary configuration, the external communication device may be, for example, a smartphone (or a tablet device, a laptop PC, etc.). The operating mode of the mode unit is configured to be switched by an application installed on the smartphone (or a tablet device, etc.). In this configuration, the operation of the necklace 100 (accessory, brain stimulation device) of this embodiment may be displayed on the screen (such as a liquid crystal panel or an organic EL panel) of the external communication device (such as a smartphone). In addition, the display of the above-mentioned timer unit (and / or cumulative time calculation unit) can be displayed on the screen of an external communication device (such as a smartphone), and its operation can be performed through the external communication device (such as a smartphone).

[0096] Furthermore, the necklace 100 (accessory, brain stimulation device) of this embodiment may be configured to be operable not only from an external communication device (such as a smartphone), but also from a mounting base 50 (wireless charging base in FIG. 4 ) on which the alpha wave generating main body unit 10 is placed. The necklace 100 (accessory, brain stimulation device) of this embodiment may be configured to be operable from both the external communication device (such as a smartphone) and the mounting base 50. Configuring the necklace 100 (accessory, brain stimulation device) of this embodiment to be operable from an external communication device (such as a smartphone) or the mounting base 50 makes it easier to improve the waterproofness (sealing) of the waterproof structure of the alpha wave generating main body unit 10, compared to providing an operation button (or operation element / terminal, operation panel, etc.) on the alpha wave generating main body unit 10, and is therefore preferable.

[0097] While the present invention has been described above using preferred embodiments, these descriptions are not limiting and various modifications are possible. Furthermore, the features of the above-described embodiments can be mutually applied unless technical contradictions arise.

[0098] According to the present invention, it is possible to provide a necklace, an accessory, and a brain stimulation device that can stimulate the brain and are suitable for long-term use.

[0099] 10 Alpha wave generating main body 11 Housing 12 Window (LED light emitting section) 15 Socket section 15a Insertion section 15b Switch section 16 Wire fixing section 18 Magnet 19 Insertion recess 20 Electrode 21 Cup section 22 Protrusion 23 Recess 25 Electrode fixing member 30 Necklace wire 31 Resin coating section (silicone rubber tube) 40 Circuit board 41 Pulse current generating section (MPU) 41 Filter (low pass filter) 43 Output terminal 44 LED (light emitting diode) 45 Battery (lithium ion secondary battery) 46 Low resilience sponge) 47 Coil 48 Spacer member 50 Mounting base (wireless charging base) 52 Power line 55 Light emitting window (LED light emitting section)

Claims

1. A necklace comprising: an alpha wave generating main body unit that generates an alpha wave pulse current; a necklace wire connected to the alpha wave generating main body unit; and an electrode provided on a part of the necklace wire, wherein the alpha wave generating main body unit comprises a pulse current generating unit that generates the alpha wave pulse current; and a filter electrically connected to the pulse current generating unit and that attenuates frequencies higher than alpha waves, and the electrode is fixed by an electrode fixing member connected to the necklace wire.

2. The necklace described in claim 1, wherein the pulse current generating unit includes a semiconductor integrated circuit element that generates a pulse current, the filter is a low-pass filter that attenuates frequencies higher than alpha waves, a resin coating is formed on the surface of the necklace wire, a plurality of electrodes are provided on the necklace wire, the electrode fixing member is provided on both ends of each of the plurality of electrodes, and each of the plurality of electrodes is connected to the resin coating portion of the necklace wire by the electrode fixing member so that there is no gap between the electrode and the resin coating portion of the necklace wire.

3. A necklace as described in claim 2, wherein the electrode has a cylindrical shape, the electrode fixing member is composed of a hemispherical cup portion and a protrusion provided at the bottom of the cup portion for fixing an end of the electrode, and the necklace wire is inserted into the center of the apex of the cup portion.

4. The necklace according to claim 3, wherein the hemispherical cup portion has a recess formed therein.

5. The necklace described in claim 3, wherein two electrodes are provided on the necklace wire, the protrusion of the electrode fixing member is an arc member that follows the cylindrical shape of the electrode, and the electrode fixing member contacts one surface of the electrode and the opposite surface thereof to fix the electrode.

6. The necklace of claim 2, wherein the alpha wave generating main body comprises: a housing; a circuit board provided within the housing; a battery provided within the housing and electrically connected to the circuit board; the semiconductor integrated circuit element, the low-pass filter, and an LED element mounted on the circuit board; and the housing is provided with a window portion that allows light from the LED element to pass through.

7. The necklace of claim 6, further comprising a base on which the alpha wave generating main body unit is placed, the alpha wave generating main body unit being provided with a coil for wireless charging, and the alpha wave generating main body unit being configured to be wirelessly charged when placed on the base.

8. The necklace according to claim 7, wherein the battery, the circuit board, and the wireless charging coil are stored in a stacked state within the housing.

9. The necklace according to claim 1, wherein one end of the necklace wire is provided with a socket portion that is detachable from the alpha wave generating main body.

10. The necklace according to claim 9, wherein the necklace has a waterproof structure when the socket portion is attached to the alpha wave generating main body portion.

11. The necklace of claim 1, wherein the alpha wave generating main body is provided with an adjustment mechanism for adjusting the length of the necklace wire.

12. A necklace as described in any one of claims 1 to 11, wherein in the alpha wave generating main body, the pulse current generating section includes a semiconductor integrated circuit element that generates a pulse current, the filter is a low-pass filter that attenuates frequencies higher than alpha waves, the semiconductor integrated circuit element has a mode unit that switches operating modes, and the operating mode in the mode unit is at least one selected from the group consisting of normal mode, athlete mode, study mode, disease rehabilitation mode, child mode, adult mode, elderly mode and relaxation mode.

13. The necklace according to claim 12, wherein the mode unit of the semiconductor integrated circuit element is provided with a timer section that controls the time for which the alpha wave pulse current is generated in the operation mode.

14. The necklace according to claim 12, wherein the mode unit of the semiconductor integrated circuit element is provided with a cumulative time calculation section that cumulatively calculates the time during which the alpha wave pulse current is generated in the operation mode.

15. A necklace as described in claim 12, wherein the alpha wave generating main body unit is equipped with a communication unit capable of communicating with an external communication device, and the operating mode in the mode unit is switched by operating the external communication device.

16. The necklace according to claim 15, wherein the external communication device is a smartphone, and the operation mode in the mode unit is switched by an application installed in the smartphone.

17. The necklace of claim 12, further comprising a base on which the alpha wave generating main body is placed, the alpha wave generating main body being provided with a coil for wireless charging, the alpha wave generating main body being configured to be wirelessly charged when the alpha wave generating main body is placed on the base, and the base being configured to switch the operating mode in the mode unit.

18. A method of using a necklace, the necklace being any one of the necklaces described in claims 1 to 17, comprising the steps of: contacting the electrodes of the necklace with the skin of a user; and turning on the necklace and generating an alpha wave pulse current from the alpha wave generating main body.

19. An accessory worn on a user's body, comprising: an alpha wave generating main body unit that generates an alpha wave pulse current; a wire connected to the alpha wave generating main body unit; and an electrode provided on a part of the wire, wherein the alpha wave generating main body unit comprises a pulse current generating unit that generates the alpha wave pulse current; and a filter electrically connected to the pulse current generating unit and that attenuates frequencies higher than alpha waves, and the electrode is fixed by an electrode fixing member connected to the wire.

20. The accessory described in claim 19, wherein in the alpha wave generating main body, the pulse current generating unit includes a semiconductor integrated circuit element that generates a pulse current, the filter is a low-pass filter that attenuates frequencies higher than alpha waves, the semiconductor integrated circuit element has a mode unit that switches operating modes, and the operating mode in the mode unit is at least one selected from the group consisting of normal mode, athlete mode, study mode, disease rehabilitation mode, child mode, adult mode, elderly mode and relaxation mode.

21. A brain stimulation device for stimulating the brain of a user, comprising: an alpha wave generating main body unit that generates an alpha wave pulse current; a wire connected to the alpha wave generating main body unit; and an electrode provided on a part of the wire, wherein the alpha wave generating main body unit comprises a pulse current generating unit that generates the alpha wave pulse current; and a filter connected to the pulse current generating unit and attenuating frequencies higher than alpha waves, and the electrode is fixed by an electrode fixing member connected to the wire.

22. The brain stimulation device of claim 21, wherein in the alpha wave generating main body, the pulse current generating section includes a semiconductor integrated circuit element that generates a pulse current, the filter is a low-pass filter that attenuates frequencies higher than alpha waves, the semiconductor integrated circuit element has a mode unit that switches operating modes, and the operating mode in the mode unit is at least one selected from the group consisting of a normal mode, an athlete mode, a study mode, a disease rehabilitation mode, a child mode, an adult mode, an elderly mode and a relaxation mode.

23. The brain stimulation device according to claim 21 or 22, which has the form of an accessory worn on the user's body.

Images