Exposure therapy enhancement and evaluation system based on direct current stimulation

By combining the DC stimulation and anxiety state assessment module in exposure treatment, the problems of instability in the efficacy of exposure treatment and lack of objectivity in the evaluation method are solved, and more efficient and economical therapeutic effects are achieved.

CN119733166APending Publication Date: 2025-04-01SHANGHAI MENTAL HEALTH CENT (SHANGHAI PSYCHOLOGICAL COUNSELLING TRAINING CENT)
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Patent Information

Application Number
CN202411932508.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-26
Publication Date
2025-04-01

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Abstract

The present invention relates to an exposure therapy synergistic and evaluation system based on direct current stimulation, wherein the system comprises: an electrical stimulation module, which is used to perform electrical stimulation on the medial prefrontal cortex of the user after the exposure therapy begins to achieve a synergistic effect on the exposure therapy; an anxiety state evaluation module, which is wirelessly connected to the electrical stimulation module, and is used to monitor the user's heart rate variability and skin galvanic response, so as to obtain the user's anxiety state during exposure therapy, and perform corresponding state evaluation and feedback. The exposure therapy synergistic and evaluation system based on direct current stimulation of the present invention can perform electrical stimulation therapy at the same time as exposure therapy, and collect heart rate variability and skin galvanic response through a monitoring bracelet, and comprehensively evaluate the user's anxiety state to guide the exposure level of exposure therapy and improve the effect of exposure therapy.
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Description

Technical Field

[0001] The present invention relates to the field of electrical stimulation nerve regulation, and specifically refers to an exposure therapy enhancement and evaluation system based on direct current stimulation. Background Art

[0002] As a non-invasive neuromodulation technology, direct current stimulation can regulate cortical excitability and synaptic plasticity, enhance cognitive function, and improve the clinical symptoms of various mental illnesses, such as depression, obsessive-compulsive disorder, anxiety disorders, sleep disorders, etc. It consists of one or more cathode and anode electrodes. After placing the electrodes on the scalp surface, the stimulator outputs a weak direct current of 1-2 mA, and the current flows from the anode to the cathode to form a loop, which has the advantages of being safe, non-invasive, portable, and wearable.

[0003] Exposure therapy, as a type of cognitive behavioral therapy, is an effective method for treating a variety of mental illnesses such as obsessive-compulsive disorder, phobia, panic disorder, and post-traumatic stress disorder. Its core is to systematically and gradually let patients face their fears or sources of anxiety in order to change their response to fear and promote their adaptation and coping ability to fear and anxiety. Specifically, first, the situations that can trigger patients' anxiety are ranked from low to high according to the degree of anxiety, and then exposure therapy is carried out from low to low levels. During the exposure period, patients need to suppress any negative coping strategies and record their emotional changes. Once the patient feels relatively comfortable in the exposure of a certain anxiety source, they can gradually turn to situations with higher anxiety levels. However, the effectiveness of exposure therapy is unstable, the treatment takes a long time, and the time and economic costs are high; and the traditional use of scales for the assessment of anxiety state during exposure lacks objectivity. It is necessary to further improve the efficacy of exposure therapy and optimize the assessment method of anxiety state. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide an exposure therapy enhancement and evaluation system based on direct current stimulation.

[0005] In order to achieve the above-mentioned object, the exposure therapy enhancement and evaluation system based on direct current stimulation of the present invention is as follows:

[0006] The exposure therapy enhancement and evaluation system based on direct current stimulation has the following main features:

[0007] An electrical stimulation module, used for conducting electrical stimulation treatment on the medial prefrontal cortex of the user after the exposure treatment begins;

[0008] The anxiety state assessment module is wirelessly connected to the electrical stimulation module to monitor the user's heart rate variability and skin electrical response, thereby obtaining the user's anxiety state during exposure therapy and performing corresponding state assessment and feedback.

[0009] Preferably, the electrical stimulation module is a head-mounted electrical stimulator, including a microcontroller, a stimulation generator, electrodes, a battery management module, a switch and an LED indicator light;

[0010] Wherein, the microcontroller is used to control stimulation parameters;

[0011] The stimulation generator is used to output direct current with an intensity of 1.5 mA;

[0012] The electrodes include an anode located at the midpoint of the frontal pole, and two cathodes located at the mastoid processes behind the ears;

[0013] The power management module has a built-in rechargeable lithium battery, which is used in conjunction with a charging circuit to power the head-mounted electrical stimulator;

[0014] The LED indicator light is used to indicate the working status of the head-mounted electrical stimulator.

[0015] Preferably, the anxiety state assessment module is an anxiety state monitoring bracelet, which is provided with a data acquisition module and a data processing module, wherein the data acquisition module is used to collect the user's heart rate information and skin current data, and the data processing module is connected to the data acquisition module to receive the data transmitted by the data acquisition module, and use it to calculate the current user's heart rate variability and skin current response indicators.

[0016] Preferably, the data acquisition module comprises:

[0017] The heart rate variability module has an optical heart rate sensor disposed inside. The optical heart rate sensor is located at the bottom of the anxiety status monitoring bracelet and is in direct contact with the skin. The optical heart rate sensor also includes an LED and a photodetector. The LED emits red light or green light, which is irradiated onto the skin to reflect and absorb the light signal. The photodetector receives the reflected light signal and converts it into an electrical signal.

[0018] Preferably, the data acquisition module further includes:

[0019] The galvanic skin response module includes a dry electrode and a signal amplifier. The dry electrode contacts the skin at the wrist and is used to detect current changes. The signal amplifier is used to enhance the weak electrical signal captured by the dry electrode. The signal amplifier has an amplifier circuit composed of an operational amplifier, which also has a filter. The filter is used to remove noise and interference to ensure signal clarity.

[0020] Preferably, the data acquisition module further includes:

[0021] The analog-to-digital converter is used to convert the electrical signals transmitted by the heart rate variability module and the skin electrical response module into digital signals, thereby facilitating data transmission.

[0022] Preferably, the data acquisition module further includes:

[0023] The power module is composed of a rechargeable lithium battery and a charging and power supply module, and is used to provide power for the data acquisition module.

[0024] Preferably, the data acquisition module further includes:

[0025] The communication module is composed of a Bluetooth module integrated in the processor, which is used for wireless connection with mobile phones or other mobile devices and supports data synchronization and application interaction.

[0026] Preferably, it is characterized in that the anxiety state monitoring bracelet performs anxiety state analysis and processing on the user through anxiety state analysis software, specifically:

[0027] Combined with the heart rate variability and skin electrical response indicators detected by the anxiety status monitoring bracelet, the user's anxiety level is comprehensively assessed, and the user's current anxiety level is displayed through color coding, where red indicates a high anxiety level, green indicates a moderate anxiety level, and black indicates a low anxiety level, so as to guide the user's exposure treatment.

[0028] The exposure therapy enhancement and evaluation system based on direct current stimulation of the present invention is adopted. In view of the problems of unstable and time-consuming exposure therapy in the prior art, the medial prefrontal cortex is electrically stimulated during exposure therapy to increase the efficacy of exposure therapy. Since the medial prefrontal cortex is related to fear learning, this is also the basis for the effectiveness of exposure therapy; at the same time, electrical stimulation of the medial prefrontal cortex can enhance the ability to inhibit learning, so the combination of exposure therapy and electrical stimulation can improve the effect of exposure therapy, which helps to reduce the cost of treatment and improve the accessibility of treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1It is a schematic diagram of the electrical stimulation module of the exposure therapy enhancement and evaluation system based on direct current stimulation of the present invention.

[0030] Figure 2 Another schematic diagram of the electrical stimulation module of the exposure therapy enhancement and evaluation system based on direct current stimulation of the present invention.

[0031] Figure 3 It is a schematic diagram of the structure of the electrical stimulation module of the exposure therapy enhancement and evaluation system based on direct current stimulation of the present invention.

[0032] Figure 4 It is a structural schematic diagram of the anxiety state assessment module of the exposure therapy enhancement and assessment system based on direct current stimulation of the present invention.

[0033] Figure 5 This is a schematic diagram of the exposure therapy enhancement and evaluation system based on direct current stimulation of the present invention monitoring anxiety state through anxiety state analysis software.

[0034] Figure 6 It is a schematic diagram of the synergistic effect of exposure therapy combined with electrical stimulation in actual application of the exposure therapy synergistic enhancement and evaluation system based on direct current stimulation of the present invention.

[0035] Reference numerals

[0036] 1 Connection block

[0037] 2 Electrodes

[0038] 2-1 Frontal electrode

[0039] 2-2 Electrode behind the ear

[0040] 3 Control module

[0041] 4 Power Management Module

[0042] 5 On / Off Button

[0043] 6 PCBA

[0044] 7 LED indicators DETAILED DESCRIPTION

[0045] In order to more clearly describe the technical content of the present invention, further description is given below in conjunction with specific embodiments.

[0046] Before describing in detail embodiments according to the present invention, it should be noted that, hereinafter, the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, whereby a process, method, article or apparatus comprising a series of elements includes not only these elements, but also other elements not explicitly listed or inherent to such process, method, article or apparatus.

[0047] See also Figure 1 and 2 As shown, the exposure therapy enhancement and evaluation system based on direct current stimulation, wherein the system comprises:

[0048] An electrical stimulation module, used for conducting electrical stimulation treatment on the medial prefrontal cortex of the user after the exposure treatment begins;

[0049] The anxiety state assessment module is wirelessly connected to the electrical stimulation module to monitor the user's heart rate variability and skin electrical response, thereby obtaining the user's anxiety state during exposure therapy and performing corresponding state assessment and feedback.

[0050] As a preferred embodiment of the present invention, the electrical stimulation module is a head-mounted electrical stimulator, including a microcontroller, a stimulation generator, electrodes, a battery management module, a switch and an LED indicator light;

[0051] Wherein, the microcontroller is used to control stimulation parameters;

[0052] The stimulation generator is used to output direct current with an intensity of 1.5 mA;

[0053] The electrodes include an anode located at the midpoint of the frontal pole, and two cathodes located at the mastoid processes behind the ears;

[0054] The power management module has a built-in rechargeable lithium battery, which is used in conjunction with a charging circuit to power the head-mounted electrical stimulator;

[0055] The LED indicator light is used to indicate the working status of the head-mounted electrical stimulator.

[0056] As a preferred embodiment of the present invention, the anxiety state assessment module is an anxiety state monitoring bracelet, which is provided with a data acquisition module and a data processing module, wherein the data acquisition module is used to collect the user's heart rate information and skin current data, and the data processing module is connected to the data acquisition module to receive the data transmitted by the data acquisition module, and use it to calculate the current user's heart rate variability and skin current response index.

[0057] As a preferred embodiment of the present invention, the data acquisition module comprises:

[0058] The heart rate variability module has an optical heart rate sensor disposed inside. The optical heart rate sensor is located at the bottom of the anxiety status monitoring bracelet and is in direct contact with the skin. The optical heart rate sensor also includes an LED and a photodetector. The LED emits red light or green light, which is irradiated onto the skin to reflect and absorb the light signal. The photodetector receives the reflected light signal and converts it into an electrical signal.

[0059] As a preferred embodiment of the present invention, the data acquisition module further includes:

[0060] The galvanic skin response module includes a dry electrode and a signal amplifier. The dry electrode contacts the skin at the wrist and is used to detect current changes. The signal amplifier is used to enhance the weak electrical signal captured by the dry electrode. The signal amplifier has an amplifier circuit composed of an operational amplifier, which also has a filter. The filter is used to remove noise and interference to ensure signal clarity.

[0061] As a preferred embodiment of the present invention, the data acquisition module further includes:

[0062] The analog-to-digital converter is used to convert the electrical signals transmitted by the heart rate variability module and the skin electrical response module into digital signals, thereby facilitating data transmission.

[0063] As a preferred embodiment of the present invention, the data acquisition module further includes:

[0064] The power module is composed of a rechargeable lithium battery and a charging and power supply module, and is used to provide power for the data acquisition module.

[0065] As a preferred embodiment of the present invention, the data acquisition module further includes:

[0066] The communication module is composed of a Bluetooth module integrated in the processor, which is used for wireless connection with mobile phones or other mobile devices and supports data synchronization and application interaction.

[0067] As a preferred embodiment of the present invention, the anxiety state monitoring bracelet performs anxiety state analysis on the user through anxiety state analysis software, specifically:

[0068] Combined with the heart rate variability and skin electrical response indicators detected by the anxiety status monitoring bracelet, the user's anxiety level is comprehensively assessed, and the user's current anxiety level is displayed through color coding, where red indicates a high anxiety level, green indicates a moderate anxiety level, and black indicates a low anxiety level, so as to guide the user's exposure treatment.

[0069] In actual application, this technical solution consists of an electrical stimulation module and an anxiety state assessment module. The electrical stimulation module is a head-mounted electrical stimulator, and the stimulation position is the medial prefrontal cortex. Electrical stimulation is performed after the exposure therapy begins. The anxiety state assessment module can measure the user's heart rate variability and skin galvanic response through a monitoring bracelet. The two can jointly reflect the user's anxiety state during exposure therapy, which can be displayed in real time through software and fed back to the user.

[0070] The technical solution will be further described in detail below:

[0071] like Figure 1 The figure shows a schematic diagram of the structure of the electrical stimulation module of the present technical solution.

[0072] The electrical stimulation module is a head-mounted electrical stimulator, including a microcontroller, a stimulation generator, electrodes, a power management module 4, a switch button 5 and an LED indicator 7. The microcontroller is used to control the stimulation parameters. The stimulation generator outputs a direct current of 1.5 mA. The stimulation time is set to 20 minutes. After the time is up, the electrical stimulation stops automatically, and the stimulation can also be terminated by the switch. There are three electrodes in total, the anode is located at the midpoint of the frontal pole (corresponding to Fpz in the 10-20 international standard lead), and the two cathodes are located at the mastoids behind the ears of both ears. The power management module 4 has a built-in rechargeable lithium battery, which cooperates with the charging circuit to power the device. The LED indicator 7 is used to indicate the working status.

[0073] like Figure 1 As shown, wiring can be routed inside the connection block 1, and PCBA6 can be connected to the control module 3. The three electrodes are all provided with slide grooves, and the electrodes can move in the slide grooves to confirm the best stimulation position; at the same time, an observation window is also provided on the outside of the stimulator to observe the position of the electrode 2.

[0074] An embodiment of a head-mounted electrical stimulator is as follows:

[0075] 1. The stimulator has a ring-shaped shell structure, which consists of two semi-ring-shaped shells connected by an elastic band in the middle. The elastic band can be adjusted to match people with different head circumferences;

[0076] 2. The ring structure is stable to wear. Users can move normally during use without causing displacement of the electrodes.

[0077] 3. Find the approximate electrode position by adjusting the wearing angle of the stimulator. At the same time, slideable electrodes are set at the frontal pole and behind the ears. The horizontal displacement of the electrodes can be adjusted to achieve more accurate electrode positioning.

[0078] 4. An observation window is set at the electrode position. After wearing, the position of the electrode can be directly observed from the outside of the device, and the electrode position can be fine-tuned from the outside;

[0079] 5. The control circuit and power supply are placed in the outer shell of the back part of the brain, and are connected to the electrodes behind the ears through connecting wires. Separate circuit boards are set at the LED, switch button and frontal electrode, and are connected to the control circuit board through the internal wiring of the middle connecting block, so as to realize the control of the three electrodes by the control circuit;

[0080] 6. The control circuit is equipped with a Bluetooth communication module for wireless communication with the monitoring bracelet and detection software;

[0081] 7. A switch button is set on the side for real-time stimulation termination;

[0082] 8. The LED light is located on the front right side of the device, making it easy to observe the indicator status.

[0083] like Figure 2 FIG. 1 is a schematic diagram of the structure of the anxiety state assessment module of the present technical solution, including:

[0084] 1) Anxiety status monitoring bracelet

[0085] Data acquisition module:

[0086] ① Heart rate variability module: The optical heart rate sensor is located at the bottom of the bracelet and is in direct contact with the skin. It includes an LED and a photodetector. The LED emits red or green light, which shines on the skin. The flow of blood affects the reflection and absorption of light; the photodetector receives the reflected light signal and converts it into an electrical signal.

[0087] ② Skin galvanic response module: includes electrodes and signal amplifiers. The dry electrode contacts the skin at the wrist to detect current changes. The signal amplifier is used to enhance the weak electrical signals captured by the electrode for more accurate analysis. It includes an amplifier circuit composed of operational amplifiers, etc., which has a built-in filter to remove noise and interference to ensure signal clarity.

[0088] ③Analog-to-digital converter: converts the electrical signals collected by the conductor and electrodes into digital signals to facilitate data transmission.

[0089] Data processing module: includes a small microcontroller or digital signal processor, which is responsible for receiving and processing the data from the optical sensor. It calculates the heart rate variability and skin galvanic response indicators through built-in algorithms.

[0090] Power management module: includes a rechargeable lithium battery and related charging and power supply modules.

[0091] Communication module: includes a small Bluetooth module integrated in the processor for wireless connection to mobile phones or other mobile devices, supporting data synchronization and application interaction.

[0092] 2) Anxiety status analysis software

[0093] like Figure 3 As shown, by combining the heart rate variability and skin electrical response indicators detected by the bracelet, the user's anxiety level is comprehensively assessed, and the user's current anxiety level is displayed through color coding. Red indicates a high anxiety level, green indicates a moderate anxiety level, and black indicates a low anxiety level, which is used to guide exposure therapy.

[0094] In a specific embodiment of the present invention, the actual application of the exposure therapy enhancement and evaluation system based on direct current stimulation is as follows:

[0095] (1) Wearing the electrical stimulator: The electrical stimulator is ring-shaped. When worn, the anode is placed at the midpoint of the frontal pole, and the two cathodes are placed behind the ears. The length can be adjusted through the retractable belt at the back to adapt to the head circumference of different users.

[0096] (2) Wear the monitoring bracelet on your wrist and connect it to your mobile device (mobile phone, tablet, personal computer, etc.) via Bluetooth.

[0097] (3) After the exposure treatment begins, the electrical stimulator is turned on by the switch, and a direct current stimulation of 1.5 mA is automatically applied for 20 minutes. After 20 minutes, the current automatically stops. If the user feels any discomfort during use, the stimulation can be manually terminated by the switch.

[0098] (4) Anxiety status detection: During the exposure therapy, the user's heart rate variability and skin galvanic response are monitored in real time through the electrodes and sensors on the bracelet to reflect the user's anxiety level. Different colors are used in the software of the mobile device to display different anxiety levels. Red indicates high anxiety level, green indicates moderate anxiety level, and black indicates low anxiety level.

[0099] (5) The intensity of exposure therapy can be guided according to the anxiety level. For example, when the color displayed in the software is red, it means that the user's anxiety level is too high at this time. The intensity of exposure can be appropriately reduced to reduce the user's anxiety level to an appropriate level. When the color displayed in the software is black, it means that the user's anxiety level is too low at this time. The level of exposure can be appropriately increased.

[0100] In practical applications, such as Figure 4As shown in the figure, clinical studies have confirmed that the effectiveness of electrical stimulation combined with exposure therapy is significantly higher than that of exposure therapy alone, and the symptoms decrease faster; this shows that direct current stimulation of the medial prefrontal cortex at the same time as exposure therapy has a synergistic effect on exposure therapy. Therefore, using this system at the same time as exposure therapy can enhance the user's inhibitory learning function by electrically stimulating the medial prefrontal cortex, thereby enhancing the efficacy of exposure therapy and increasing the speed of exposure therapy, so that it can benefit more patients and reduce the disease burden of patients with mental illness.

[0101] By using this system, the user's anxiety state can be comprehensively assessed by collecting heart rate variability and skin electrical response through the monitoring bracelet during exposure therapy, so as to guide the exposure level of exposure therapy and improve the effect of exposure therapy.

[0102] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0103] It should be understood that each part of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution device.

[0104] A person of ordinary skill in the art may understand that all or part of the steps of the method for implementing the above-mentioned embodiment may be completed by instructing the relevant hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one of the steps of the method embodiment or a combination thereof.

[0105] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0106] In the description of this specification, the description with reference to the terms "an embodiment", "some embodiments", "example", "specific example", or "embodiment" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0107] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0108] The exposure therapy enhancement and evaluation system based on direct current stimulation of the present invention is adopted. In view of the problems of unstable and time-consuming exposure therapy in the prior art, the medial prefrontal cortex is electrically stimulated during exposure therapy to increase the efficacy of exposure therapy. Since the medial prefrontal cortex is related to fear learning, this is also the basis for the effectiveness of exposure therapy; at the same time, electrical stimulation of the medial prefrontal cortex can enhance the ability to inhibit learning, so the combination of exposure therapy and electrical stimulation can improve the effect of exposure therapy, which helps to reduce the cost of treatment and improve the accessibility of treatment.

[0109] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it is apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be regarded as illustrative rather than restrictive.

Claims

1. An exposure therapy enhancement and evaluation system based on direct current stimulation, characterized in that: The system comprises: An electrical stimulation module, used for conducting electrical stimulation treatment on the medial prefrontal cortex of the user after the exposure treatment begins; The anxiety state assessment module is wirelessly connected to the electrical stimulation module to monitor the user's heart rate variability and skin electrical response, thereby obtaining the user's anxiety state during exposure therapy and performing corresponding state assessment and feedback.

2. The exposure therapy enhancement and evaluation system based on direct current stimulation according to claim 1, characterized in that: The electrical stimulation module is a head-mounted electrical stimulator, including a microcontroller, a stimulation generator, electrodes, a battery management module, a switch and an LED indicator light; Wherein, the microcontroller is used to control stimulation parameters; The stimulation generator is used to output direct current with an intensity of 1.5 mA; The electrodes include an anode located at the midpoint of the frontal pole, and two cathodes located at the mastoid processes behind the ears; The power management module has a built-in rechargeable lithium battery, which is used in conjunction with a charging circuit to power the head-mounted electrical stimulator; The LED indicator light is used to indicate the working status of the head-mounted electrical stimulator.

3. The exposure therapy enhancement and evaluation system based on direct current stimulation according to claim 1, characterized in that: The anxiety state assessment module is an anxiety state monitoring bracelet, which is internally provided with a data acquisition module and a data processing module, wherein the data acquisition module is used to collect the user's heart rate information and skin current data, and the data processing module is connected to the data acquisition module to receive the data transmitted by the data acquisition module, and use it to calculate the current user's heart rate variability and skin current response index.

4. The exposure therapy enhancement and evaluation system based on direct current stimulation according to claim 3 is characterized in that: The data acquisition module comprises: The heart rate variability module has an optical heart rate sensor disposed inside. The optical heart rate sensor is located at the bottom of the anxiety status monitoring bracelet and is in direct contact with the skin. The optical heart rate sensor also includes an LED and a photodetector. The LED emits red light or green light, which is irradiated onto the skin to reflect and absorb the light signal. The photodetector receives the reflected light signal and converts it into an electrical signal.

5. The exposure therapy enhancement and evaluation system based on direct current stimulation according to claim 4, characterized in that: The data acquisition module also includes: The galvanic skin response module includes a dry electrode and a signal amplifier. The dry electrode contacts the skin at the wrist and is used to detect current changes. The signal amplifier is used to enhance the weak electrical signal captured by the dry electrode. The signal amplifier has an amplifier circuit composed of an operational amplifier, which also has a filter. The filter is used to remove noise and interference to ensure signal clarity.

6. The exposure therapy enhancement and evaluation system based on direct current stimulation according to claim 5, characterized in that: The data acquisition module also includes: The analog-to-digital converter is used to convert the electrical signals transmitted by the heart rate variability module and the skin electrical response module into digital signals, thereby facilitating data transmission.

7. The exposure therapy enhancement and evaluation system based on direct current stimulation according to claim 4, characterized in that: The data acquisition module also includes: The power module is composed of a rechargeable lithium battery and a charging and power supply module, and is used to provide power for the data acquisition module.

8. The exposure therapy enhancement and evaluation system based on direct current stimulation according to claim 4, characterized in that: The data acquisition module also includes: The communication module is composed of a Bluetooth module integrated in the processor, which is used for wireless connection with mobile phones or other mobile devices and supports data synchronization and application interaction.

9. The exposure therapy enhancement and evaluation system based on direct current stimulation according to any one of claims 3 to 8, characterized in that: The anxiety state monitoring bracelet performs anxiety state analysis on the user through anxiety state analysis software, specifically: Combined with the heart rate variability and skin electrical response indicators detected by the anxiety status monitoring bracelet, the user's anxiety level is comprehensively assessed, and the user's current anxiety level is displayed through color coding, where red indicates a high anxiety level, green indicates a moderate anxiety level, and black indicates a low anxiety level, so as to guide the user's exposure treatment.