Memory fixing control device and memory fixing method

Abstract

To efficiently fix a memory to a subject.SOLUTION: A memory fixing control device includes an acquisition part for acquiring brain activity information showing an active state of the brain of a subject, a state determination part for determining an active state of a prescribed part of the brain of the subject on the basis of the acquired brain activity information, a reproduction control part for reproducing content that stimulates subject's hearing of the subject according to a determination result of the state determination part, and a memory fixing determination part for determining whether contents of the content are fixed as a memory.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a memory fixing control device and a memory fixing method. [Background technology]

[0002] By providing sensory stimulation to a sleeping subject, the cognitive domain of the subject is strengthened. A technique for achieving this is known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2021-503339 Summary of the Invention [Problem to be solved by the invention]

[0004] The technology described in Patent Document 1 provides sensory stimulation regardless of whether the subject's memory has been established. Therefore, it is difficult to efficiently consolidate the memory in the subject. There is a need for technology that can efficiently solidify memories in subjects.

[0005] The present invention has been made in view of the above, and is a method for efficiently consolidating memories in subjects. The object of the present invention is to provide a memory fixation control device and a memory fixation method that can achieve this. [Means for solving the problem]

[0006] The memory consolidation control device according to the present invention acquires brain activity information indicating the activity state of the subject's brain. an acquisition unit that acquires the brain activity information and acquires the activity state of a predetermined part of the brain of the subject based on the acquired brain activity information; a state determination unit that determines whether the subject is able to hear a sound or not, and a state determination unit that stimulates the hearing of the subject depending on the determination result of the state determination unit. a playback control unit that causes a playback device to play back the content stored in the storage unit; and a memory fixation determination unit for determining whether the memory fixation has occurred.

[0007] The memory consolidation method according to the present invention includes acquiring brain activity information indicating the activity state of the subject's brain. and determining an activity state of a predetermined part of the subject's brain based on the acquired brain activity information. and providing content that stimulates the auditory sense of the subject according to the determination result of the active state. The content is reproduced by a reproduction device, and it is determined whether the content has been memorized. This includes the following. [Effects of the Invention]

[0008] According to the present invention, it is possible to efficiently solidify memories in subjects. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing an example of a memory fixing device according to the present embodiment. [Figure 2] FIG. 2 is a functional block diagram showing an example of the memory fixing device according to the present embodiment. [Figure 3] FIG. 3 is a diagram showing an example of sleep levels. [Figure 4] FIG. 4 is a graph showing an example of the change over time in the deoxyhemoglobin concentration of a subject. [Figure 5] FIG. 5 is a diagram showing an example of time-dependent changes in the sleep level of a subject. [Figure 6] FIG. 6 is a flowchart showing an example of the operation of the control device. [Figure 7] FIG. 7 is a diagram showing an example of the change over time in the sleep level of a subject. [Figure 8] FIG. 8 is a flowchart showing an example of the operation of the control device. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of a memory fixing control device and a memory fixing method according to the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments. The components in the form are those that are easily replaceable by those skilled in the art, or those that are substantially the same. This includes:

[0011] FIG. 1 is a schematic diagram showing an example of a memory fixing device 100 according to this embodiment. In this way, the memory fixing device 100 includes a detection device 10, a setting device 20, and a control device (memory fixing The apparatus includes a control device 30, a playback device 40, and a stimulus providing device 50.

[0012] The detection device 10 detects brain activity information indicating the activity state of the subject's brain. For example, functional Near-Infrared Spectroscopy (fNIRS) Cerebral blood flow is measured based on the principles of ectroscopy (functional near-infrared spectroscopy). The detection device 10 is not limited to a measurement device based on the principle of fNIRS. For example, functional magnetic resonance imaging (fMRI) is used to measure brain activity. ) may be used.

[0013] The detection device 10 includes, for example, a head-mounted unit 11, a plurality of optical fiber channels 12, and an information The head-mounted unit 11 is attached to the head of the subject. The fiber optics 12 emits near-infrared light from a light source (not shown) to the subject's head. 12a, and an information generating unit 13 that receives near-infrared light reflected or scattered inside the subject's head. The optical fiber 12a and the optical fiber 12b are The optical fiber is placed in a position that allows measurement of the Wernicke's area of ​​the subject's brain. The optical fiber 12a and the optical fiber 12b are connected to the brain in addition to or instead of the Wernicke's area of ​​the subject's brain. It may be placed at a position that allows measurements of the local area.

[0014] The information generating unit 13 calculates the amount of oxidation based on the near-infrared light transmitted from the light receiving optical fiber 12b. The hemoglobin concentration is calculated as brain activity information. In addition to or instead of the oxygenated hemoglobin concentration, the deoxygenated hemoglobin concentration and the total hemoglobin concentration are measured. In this embodiment, the information generating unit 13 may calculate at least one of the following: The calculated brain activity information is activity information about the Wernicke's area of ​​the subject's brain. The optical fiber 12b and the information generating unit 13 may be connected by wire or wirelessly. The information generating unit 13 may also be built into the head mounted unit 11.

[0015] The setting device 20 inputs setting information for the storage and fixing device 100. The setting information is, for example, The setting device 20 includes information about the content to be played on the device 40. The setting device 20 is connected to a keyboard, mouse, etc. Alternatively, a smartphone or tablet having a touch panel may be used. may also be used.

[0016] The control device 30 controls the overall operation of the memory fixing device 100. Processing units such as PU (Central Processing Unit) and RAM (R ROM (Read Only Memory) or ROM (Read Only Memory) It has memory devices such as a memory card.

[0017] The playback device 40 plays the first content and the second content under the control of the playback control unit 33. The playback device 40 has, for example, a speaker that outputs sound. For example, the device may be mounted on headphones that can be worn on the subject's head. good.

[0018] The stimulus application device 50 is a device that stimulates a sense other than the hearing of the subject. The device 50 includes, for example, a visual stimulation unit 51 that stimulates the subject's visual sense and a tactile stimulation unit 52 that stimulates the subject's tactile sense. The device has a tactile stimulation unit 52 and an olfactory stimulation unit 53 that stimulates the subject's sense of smell. The tactile stimulation unit 52 may be, for example, an eye mask having a light irradiation function. The olfactory stimulation unit 53 is a device that stimulates the sense of smell by emitting a scent component such as an air freshener. The stimulation device 50 is a device that can inject the stimulation gas. Stimuli corresponding to words in the content are provided as visual, tactile and olfactory stimuli. This allows for multimodal stimulation to be provided to the subject.

[0019] Next, the configuration of the control device 30 according to this embodiment will be described. 2 is a functional block diagram showing an example of the memory fixing device 100. As shown in FIG. The device 30 includes an acquisition unit 31, a state determination unit 32, a playback control unit 33, a stimulation control unit 34, and a recording unit. The memory fixation determination unit 35 and the memory unit 36 ​​are included.

[0020] The acquisition unit 31 acquires the brain activity information generated by the information generation unit 13 of the detection device 10. The acquisition unit 31 may have the function of the information generation unit 13 described above. The unit 31 directly acquires the signal sent from the optical fiber 12b of the detection device 10 and outputs the brain activity information. The acquisition unit 31 may be configured to acquire brain activity information at predetermined intervals. To do so.

[0021] The state determination unit 32 determines a predetermined state of the subject's brain based on the brain activity information acquired by the acquisition unit 31. The timing at which the state determination unit 32 determines the activity information is, for example, The timing is the same as or corresponds to the timing at which the acquisition unit 31 acquires brain activity information. In this embodiment, the predetermined area of ​​the brain is, for example, Wernicke's area. The state can be classified into an adaptive state (predetermined state) suitable for memory consolidation, or a non-adaptive state (predetermined state) unsuitable for memory consolidation. It can be set to two levels: adaptive or not.

[0022] FIG. 3 shows an example of the change over time in the oxygenated hemoglobin concentration of a subject. When the blood moves, oxygen molecules are separated from the oxyhemoglobin in the blood (deoxygenation) and become deoxyhemoglobin. The oxygen molecules produced by deoxidation are transported to brain cells. When the oxygen concentration is low and the deoxyhemoglobin concentration is high, brain cells are active and deoxyhemoglobin is active. On the other hand, the oxygenated hemoglobin concentration is high and the deoxygenated hemoglobin concentration is low. When the concentration of ATP is low, deoxidation is not so active, and the brain cells It can be determined that there is ample room for cell activity.

[0023] Therefore, the state determination unit 32 determines whether the oxygen level of the Wernicke's area of ​​the brain is high, for example, as shown in FIG. If the hemoglobin concentration is above a predetermined threshold A1, it is judged as an adaptive state, and the Wernicke's syndrome of the brain is If the oxygenated hemoglobin concentration in the field is below the threshold A1, it can be determined that the field is in a non-adaptive state. .

[0024] The state determination unit 32 may determine the sleep level of the subject. The timing of determining the frequency is the same as or corresponds to the timing of acquiring the brain activity information by the acquisition unit 31. The timing may be different from the timing at which the acquisition unit 31 acquires the brain activity information. It may be a timing that corresponds or does not correspond.

[0025] 4 is a diagram showing an example of sleep levels. As shown in FIG. 4, in this embodiment, For example, the sleep level is level 0 for wakefulness (not sleeping), level 1 for REM sleep, and level 2 for REM sleep. Level 1 is the state of stage 1 of non-REM sleep, level 2 is the state of stage 2 of non-REM sleep Level 3 is the state of stage 3 of non-REM sleep, and Level 4 is the state of stage 4 of non-REM sleep. The sleep state can be set to 6 levels from level 5. The number of stages is not limited to the above, and may be set to, for example, five or less stages or seven or more stages. The sleep level may be determined using the brain activity information acquired by the acquisition unit 31, or by using an electroencephalograph or Brain waves and heart rate detected by a heart rate monitor, or sleep detected by a 3-axis acceleration sensor, etc. The sleep level may be determined using the person's movements or vibrations over time.

[0026] The reproduction control unit 33 controls the control unit to stimulate the auditory sense of the subject based on the determination result of the state determination unit 32. In this embodiment, the content is, for example, The first content is a voice set by the subject using the setting device 20 and includes content to be memorized by the subject. The second content includes a first content and a second content that is different from the first content. For example, music related to the first content, music that calms the subject, On the other hand, examples include audio from advertisements that highlight the contents of products and services.

[0027] The reproduction control unit 33 determines whether the sleep level is the first level and whether the state determination unit 32 determines whether the sleep level is the first level or the active level. If the operating state is determined to be an adaptive state, the first content is reproduced as the content. In this embodiment, the first level is, for example, when the subject is in REM sleep. The playback control unit 33 controls the playback device 10 to set the non-adaptive state to Level 1. Regarding (see Figure 4), even if the subject's sleep level was the first level, the first content This prevents the brain cells from being overloaded more than necessary, This allows for efficient memory consolidation when cells have ample room for activity.

[0028] The playback control unit 33 determines whether the sleep level is a second level different from the first level in the state determination unit 32. If it is determined that the content is a bell, the second content is transmitted to the playback device 40 as the content. The second level can be a deeper level of sleep than the first level. In this embodiment, the second level is, for example, when the subject is in stage 1 or stage 2 of non-REM sleep. It can be a level corresponding to Stage 2, that is, Level 2 or Level 3. However, the playback control unit 33 may not control playback of the second content. For example, when the playback device 40 plays back an advertisement as the second content, the first content 33 is In order not to hinder the memory retention of the content, for example, the subject's sleep level is set to the second level. It is possible to start playback after a predetermined time has elapsed since the content is determined to be a file. can.

[0029] After causing the playback device 40 to play back the first content, the playback control unit 33 instructs the state determination unit 32 to and determining that the sleep level is different from the first level and measuring the subject's brain activity. If at least one of the following determinations is made: The playback control unit 33 also stops the playback of the second content on the playback device 40. Then, the state determination unit 32 determines that the sleep level is different from the second level. If this is done, the second content is stopped.

[0030] The playback control unit 33 controls the playback device 40 in accordance with the determination result of the memory fixation determination unit 35, which will be described later. For example, the playback control unit 33 adjusts the playback mode of the content in the memory stability determination unit 3. If the determination result in step 5 is a fixed state (a state in which the memory is fixed: described later), the playback device 40 The content being played is changed from the currently played content (first content for storage) to another In this case, the content to be switched to may be The content may be another first content previously set by the subject, or a second content. The playback control unit 33 may be configured to switch from a plurality of types of first content. When selecting the target content, if the playback order is set by the setting device 20, The playback control unit 33 selects the first content based on the setting of the playback order. The degree of difficulty in comprehension is calculated based on the amount of language contained in the content, the field, etc. The first content may be selected based on the degree of difficulty. In this case, the playback control unit 33 For example, the first contents can be selected in ascending or descending order of the level of difficulty in understanding. In addition, the playback control unit 33 determines whether the determination result of the memory fixation determination unit 35 is in a non-fixed state (the memory is not fixed). If the currently playing content (first content for storage) is not in the The playback control unit 33 may be configured to repeatedly play back the recorded content (i.e., the content) on the playback device 40. If the determination result of the memory fixation determination unit 35 is a non-fixed state (a state in which the memory is not fixed: described later), If the content is currently being played back, the content being played back is repeatedly played back on the playback device 40. Good too.

[0031] The stimulus control unit 34 controls the reproduction of the content by a sound different from the auditory sense of the subject. The stimulus applying device 50 applies a stimulus to the senses. When the first content is played on the playback device 40, a stimuli corresponding to the words played on the playback device 40 is The stimulus can be applied to the subject by a stimulus application device 50.

[0032] FIG. 5 shows the correspondence between the types of stimuli given to the subject and the words played back by the playback device 40. As shown in FIG. 5, for example, in the playback device 40, Represents visual conditions such as ticking, strong sunlight, afternoon sun, oncoming car headlights, etc. When a word is reproduced, the stimulus control unit 34 generates a stimulus for the subject's vision through the visual stimulus unit 51. In addition, for example, the playback device 40 can Words that describe tactile states such as hot, rough, smooth, soft, etc. are played. In this case, the stimulus control unit 34 applies a stimulus to the subject's tactile sense to the subject by the tactile stimulus unit 52. For example, the reproducing device 40 can provide the scent of roses, Kaori Kikuno, When words that describe olfactory states such as the smell of rotten fish or the smell of soy sauce are reproduced, The stimulus control unit 34 controls the olfactory stimulus unit 53 to provide a stimulus to the subject's sense of smell. It can be granted.

[0033] The memory fixation determining unit 35 determines whether the content has been fixed as a memory. In this embodiment, the memory fixation determination unit 35 determines whether the first content for storage set by the setting device 20 is The memory fixation determining unit 35 determines whether the contents of the second content have been fixed as memory. It may also be determined whether the contents of the content have been firmly established in memory.

[0034] Figure 6 shows an example of the time course of oxyhemoglobin concentration in the subject's Wernicke's area. If Wernicke's area can understand the meaning of language, the activity in Wernicke's area will This reduces deoxidation and increases oxidation, as the language can be processed without increased activity. It is known that the concentration of phosphodiesterase (MOG) increases in the brain. On the other hand, the Wernicke's area is responsible for understanding the meaning of language. If the oxygenated hemoglobin concentration is not increased, the oxygenated hemoglobin concentration will not increase because the deoxygenation will not be reduced. It is known that when the oxygenated hemoglobin concentration is high, the Wernicke's area It is possible to understand the meaning of words and recognize that the memory has been established. When the concentration is low, Wernicke's area is unable to understand the meaning of language and memories are not consolidated. Therefore, the memory consolidation determination unit 35 determines that the brain is in a well-being state. If the oxygenated hemoglobin concentration in the field is above a predetermined threshold A2, the memory is established. If the threshold value is less than A2, the memory is not fixed. The subject is judged to be in a state where the oxygen in the Wernicke's area of ​​the brain is not fixed (hereinafter referred to as a non-fixed state). Regarding the threshold A2 of the oxidized hemoglobin concentration, it is premised that the activity state is the adapted state Therefore, A1 < A2 can be set. In the example shown in FIG. 6, the memory fixation determination unit 35 makes a determination every predetermined unit period, and determines that the memory is in a fixed state when the oxidized hemoglobin concentration is equal to or higher than the threshold A2 in at least a part of the unit period, but it is not limited to this Here, when the deoxidized hemoglobin concentration in the Wernicke area of the brain is less than a predetermined threshold, the memory fixation determination unit 35 determines that the memory is in a fixed state, and when it is equal to or higher than the predetermined threshold it may determine that the memory is in an unfixed state.

[0035] The memory unit 36 stores various types of information. The memory unit 36 has a storage such as a hard disk drive, a solid state drive, etc. Note that an external storage medium such as a removable disk may be used as the memory unit 36. The memory unit 36 stores programs, data, etc. for executing various processes of the acquisition unit 31, the state determination unit 32, and the reproduction control unit 33 in the control device 30 . Also, the memory unit 36 stores the first content and the second content . Further, the memory unit 36 stores the setting contents set by the setting device 20 .

[0036] The memory unit 36 stores a program for causing a computer to execute a process of acquiring brain activity information indicating the activity state of the subject's brain, a process of determining the activity state of a predetermined part of the subject's brain based on the acquired brain activity information, a process of causing the reproduction device 40 to reproduce content that stimulates the subject's hearing according to the determination result of the activity state , and a process of determining whether the content of the content has been fixed as memory . [[ID=​​Next, a memory fixing method using the memory fixing device 100 configured as described above will be described. The subject wears the head-mounted unit 11 of the detection device 10 on his / her head, and the optical fiber channel 1 The position is adjusted so that point 2 corresponds to the Wernicke's area of ​​the brain. The subject sleeps in this state. FIG. 7 is a diagram showing an example of the time change in the sleep level of a subject. In the example shown in FIG. The subject's sleep level gradually increases from level 0, which is awake, to a deeper sleep state (e.g., level 5). etc.), and then repeatedly rises and falls over time.

[0038] The detection device 10 irradiates the head of the subject with near-infrared light from the optical fiber 12a, and The near-infrared light received by the optical fiber 12b is sent to the information generating unit 13. Based on the near-infrared light transmitted from 2b, the oxygenated hemoglobin in the Wernicke's area of ​​the subject's brain was measured. The concentration is calculated as brain activity information.

[0039] In the control device 30, the acquisition unit 31 acquires the brain activity information generated by the information generation unit 13. The state determination unit 32 determines the sleep level of the subject and calculates the brain activity acquired by the acquisition unit 31. Based on the information, the activity state of a specific part of the subject's brain is determined.

[0040] In the example shown in FIG. 7, at time t1, the state determination unit 32 determines the sleep level of the subject as In this case, the playback control unit 33 selects the second content as the content. The subject in the level 3 sleep state is played back by the playback device 40. The auditory sense is stimulated by the second content played from 40. For example, When auditory stimulation is provided by content-related music, sleep states of Level 3 or Level 4 are observed. Even if the subject is listening to music, it is possible to consolidate the memory. When stimulated, the subject is put into a calm state, which prevents the accumulation of fatigue. When auditory stimulation was provided by the sound of the advertisement, subjects in a sleep state of level 3 or level 4 After time t1, the contents of the product or service can be effectively promoted to the customer. The subject's sleep level was determined to be level 3 for a certain period of time, and then changed to level 2. During this period, the playback control unit 33 continues playing the second content C2.

[0041] At time t2, the state determining unit 32 determines the sleep level of the subject as level In this case, the playback control unit 33 determines whether the subject's activity is 1 or 2. Check whether the state determination result is an adaptive state. The subject's activity state is an adaptive state. If it is determined that the second content C2 has been played back, the playback of the second content C2 is stopped and the first content C1 is played back by the playback device 4. The subject in REM sleep (level 1 sleep state) is played back from the playback device 40. The auditory sense is stimulated by the first content C1 generated. The content contained in C1 will be fixed in the brain as memory. When the sound is reproduced, the stimulus control unit 34 controls the stimulus application device 50 to apply a stimulus to a sense other than hearing. The stimulation may be given.

[0042] When the first content C1 is played back by the playback device 40, the memory stability determination unit 35 1. Whether the content of content C1 has been fixed in the subject's memory (fixed or not) If the memory fixation determination unit 35 determines that the image is in a fixed state, the playback control The control unit 33 stops the playback of the first content C1 or The recording medium can be changed and played back from the playback device 40. If it is determined that the first content C1 is in the repeat state, the content of the first content C1 is repeatedly reproduced by the reproduction device 40. It can be done.

[0043] In addition, during the period L from time t3 to time t4, the state of the subject in the state determination unit 32 In this case, the playback control unit 33 determines that the first control At time t4, the subject's activity status is again judged as In this case, the playback control unit 33 resumes the playback of the first content C1. To make.

[0044] After the reproduction of the first content C1 is resumed, at time t5, the result of the determination of the subject's sleep level is In this case, the playback control unit 33 controls the playback of the first content C1. After time t5, the subject's sleep level is The result of the assessment of the rule remained at level 2 for a certain period of time, and then changed to level 3. During this period, The playback control unit 33 continues the playback of the second content C2. The result of the sleep level determination of the subject has changed to level 4. In this case, the playback control unit 33 , the playback of the second content C2 is stopped.

[0045] In this way, the memory fixation determination unit 35 determines whether the image is in a fixed state or a non-fixed state. It is possible to easily determine whether the content C1 has been retained in the subject's memory. The playback control unit 33 controls the content in the playback device 40 according to the determination result of the memory fixation determination unit 35. In order to adjust the playback mode of the content, the content was played according to the subject's memory retention state. Furthermore, the stimulus control unit 34 controls the content to be played back from the playback device 40. In order to provide a stimulus to a sense other than the subject's hearing from the stimulus providing device 50, It can promote memory consolidation in subjects.

[0046] 8 is a flowchart showing an example of the operation of the control device 30. As shown in FIG. The acquisition unit 31 acquires the brain activity information generated by the information generation unit 13 (step S10). The state determination unit 32 determines the sleep level of the subject and determines the brain activity information acquired by the acquisition unit 31. Based on this, the activity state of a predetermined part of the subject's brain is determined (step S20).

[0047] The reproduction control unit 33 determines that the sleep level is the first level and the activity state is the appropriate level in the state determination unit 32. If it is determined that the second content is in a responsive state (Yes in step S30), whether the second content is being played back or not is determined. The playback control unit 33 determines whether the second content is being played back (step S40). If so (Yes in step S40), the reproduction of the second content is stopped (step When the playback control unit 33 determines that the second content is not being played back (step S50), If the playback of the second content is stopped (No. in step S40), the first content will be played back. The playback control unit 33 determines whether the first content is being played back or not (step S60). If it is determined that the first content is not the first content (No in step S60), the first content is not played back in the playback device 40. The playback control unit 33 determines that the first content is being played back (step S70). If so (Yes in step S60), skip step S70 and proceed to step S Processes from 150 onwards.

[0048] In step S30, the playback control unit 33 determines whether the sleep level is not the first level or whether the activity level is the first level. If it is determined that the state is not an adaptive state (No in step S30), the first content The playback control unit 33 determines whether the first content is being played back (step S80). If it is determined that the content is in the middle (Yes in step S80), the playback of the first content is stopped. (Step S90).

[0049] When the playback control unit 33 determines that the first content is not being played back (step S80 When the sleep level determination result is the second level (No. of the first content) or the reproduction of the first content is stopped, If the sleep level determination result is the second level, the playback control unit 33 If so (Yes in step S100), it is determined whether the second content is being played back. (Step S110). The playback control unit 33 determines that the second content is not being played back. If so (No in step S110), the playback device 40 is caused to play back the second content (step When the reproduction control unit 33 determines that the second content is being reproduced (step S120), If the answer is "Yes" in step S110, step S120 is skipped and the process ends.

[0050] Furthermore, when the playback control unit 33 determines that the sleep level is not the second level, (No in step S100), it is determined whether the second content is being played back (step S1 30). When the playback control unit 33 determines that the second content is being played back (step S130 If the answer is "Yes", the playback control unit stops the playback of the second content (step S140). 33, when it is determined that the second content is not being played back (No in step S130), Step S140 is skipped and the process ends.

[0051] If step S70 is performed, or if the processing of step S60 is No, the stimulation control The control unit 34 determines whether a predetermined word is included in the first content played back from the playback device 40. (Step S150). The stimulus control unit 34 determines whether the predetermined word is included. If so (Yes in step S150), the stimulus applying device 50 applies a sensory stimulus corresponding to the word. The stimulus control unit 34 determines whether the stimulus contains a predetermined word. If it is determined that the data cannot be read (No in step S150), the process of step S160 is skipped.

[0052] If step S160 is performed, or if the process of step S150 is No, The memory fixation determination unit 35 determines whether the content of the first content has been fixed in the subject's memory ( The playback control unit 33 determines whether the image is in a fixed state or a non-fixed state (step S170). Depending on the result of the determination by the incoming call determination unit 35, the content to be played back by the playback device 40 is changed and played back. and changing at least one of the playback modes of the content in the device 40 (step P180).

[0053] In step S180, if the memory fixation determination unit 35 determines that the memory is in a fixed state, In this case, the playback control unit 33 may, for example, stop the playback of the first content. If the first content is set in the setting device 20, the next first content is played back. can be performed.

[0054] In step S180, the memory fixation determination unit 35 determines that the image is not fixed. If so, the playback control unit 33 controls the repeat playback device 40 to play back the details of the first content. play a second content that helps the user understand the first content, etc. The first content can be repeatedly reproduced by the reproduction device 40. When the playback speed is changed, the playback speed may be slowed down or otherwise changed.

[0055] As described above, the control device 30 according to this embodiment is configured to measure brain activity, which indicates the activity state of the subject's brain. An acquisition unit 31 that acquires information, and a predetermined part of the brain of the subject based on the acquired brain activity information. A state determination unit 32 determines the active state of the subject, and the hearing of the subject is determined according to the determination result of the state determination unit 32. a playback control unit 33 that causes a playback device 40 to play back content that stimulates the senses; and a memory fixation determining unit 35 for determining whether the content has been fixed as a memory.

[0056] Furthermore, the memory consolidation method according to this embodiment involves acquiring brain activity information indicating the activity state of the subject's brain. The activity of specific areas of the subject's brain is determined based on the acquired brain activity information. The system will play back content that stimulates the subject's hearing depending on the result of the activity state. and determining whether the content has been fixed in memory. Includes.

[0057] According to this configuration, the content played back from the playback device 40 is stored in the subject's memory. This allows the subject to easily determine whether the information has been retained in their memory. This allows the subject to efficiently solidify their memory.

[0058] In the control device 30 according to this embodiment, the playback control unit 33 determines whether or not the memory is fixed. Depending on the determination result, the content to be played back on the playback device 40 is changed and the playback device 40 In this configuration, the subject is caused to change at least one of the following: By changing at least one of the content and the playback mode depending on the state of memory retention, This allows the subject to efficiently consolidate their memory.

[0059] In the control device 30 according to this embodiment, the predetermined state is the Wernicke's area of ​​the brain of the subject. The oxygenated hemoglobin concentration is equal to or greater than the first threshold A1. Memory can be efficiently consolidated according to the activity state of the central nervous system.

[0060] In the control device 30 according to this embodiment, the memory consolidation determination unit 35 determines the well-being of the brain of the subject. When the oxygenated hemoglobin concentration in the nickel field is equal to or greater than the second threshold A2, the content In this configuration, the subject is judged to have retained the memory according to the activity state of the subject's language center. The subject can easily determine whether or not the memory has been established.

[0061] In the control device 30 according to this embodiment, when content is reproduced, the subject's hearing is The device further includes a stimulus control unit 34 that causes a stimulus application device to apply a stimulus to a different sense. This configuration allows the subject to receive multimodal stimulation to senses other than hearing. This allows for efficient memory consolidation.

[0062] The technical scope of the present invention is not limited to the above-described embodiment, and any modifications may be made without departing from the spirit of the present invention. For example, in the above embodiment, the first sleep level is Although the explanation was given using level 1 (REM sleep) as an example, it is not limited to this. Note that the first level may be used, for example, in addition to or instead of level 1, to determine whether the subject is in non-REM sleep. The level corresponds to stage 1 or stage 2 of sleep, i.e., level 2 or level 3. Good too.

[0063] <Variation 1> In addition, when the state determination unit 32 determines the activity state of a predetermined part of the brain of the subject, The hemoglobin concentration threshold may be changed depending on the sleep level. When the corresponding sleep level is high (wakefulness is low), the oxygenated hemoglobin concentration threshold is increased. However, when the sleep level corresponding to the first level is low (high alertness), oxygenated hemoglobin is increased. The threshold for bin density can be lowered. This allows for a more accurate detection of high levels of alertness. It is easier to present auditory stimuli to subjects, and more carefully to subjects with low levels of arousal. Auditory stimulation can be provided, reducing the impact on the subject's health.

[0064] <Variation 2> The state determination unit 32 also determines whether the oxygenated hemoglobin concentration in the Wernicke's area of ​​the brain is equal to or greater than a predetermined value. It is possible to determine whether the brain is in an adaptive or non-adaptive state based on whether it is in a well-being state or not. Instead of the oxyhemoglobin concentration in the Wernicke's area, the oxyhemoglobin concentration in the Wernicke's area was measured. In other words, the state determination unit 32 may use the difference between the concentration of deoxyhemoglobin and the concentration of cerebral vasculature. The difference between oxygenated hemoglobin and deoxygenated hemoglobin concentrations in the Ernicke's area is greater than or equal to the specified value B1. If the patient is in an adaptive state, the oxygenated hemoglobin and deoxygenated hemoglobin concentrations in the Wernicke's area of ​​the brain are measured. If the difference in Robin density is less than a predetermined value B1, it is determined that the state is non-adaptive. In cases where both oxyhemoglobin and deoxyhemoglobin concentrations are high, By providing auditory stimuli to the subjects, the subjects were forced to supply more oxygenated hemoglobin. By providing auditory stimulation to subjects effectively, the impact on their health can be reduced. In addition, the difference between the oxygenated hemoglobin concentration and the deoxygenated hemoglobin concentration can be used to This allows for relative values, making it easier to tolerate individual differences.

[0065] <Variation 3> Furthermore, the memory consolidation determination unit 35 determines whether the oxygenated hemoglobin concentration in the Wernicke's area of ​​the brain is below a predetermined threshold. The state of fixation and non-fixation were determined based on whether the value was above or below the threshold. Instead of the oxygenated hemoglobin concentration in the Wernicke's area, the oxygenated hemoglobin concentration in the Wernicke's area was measured. The difference in the concentration of deoxyhemoglobin may be used. If the difference between the oxygenated hemoglobin concentration and the deoxygenated hemoglobin concentration in the Ernicke's area is greater than the specified value B2, If it is, it is determined that the memory is fixed, and if it is less than the predetermined value B2, it is determined that the memory is not fixed. It may be determined that the device is in the attached state.

[0066] <Variation 4> The state determination unit 32 determines the activity state of the Wernicke's area as a predetermined region of the subject's brain. However, Broca's area may also be included as a predetermined area of ​​the brain. The determination unit 32 may, for example, measure the oxygenated hemoglobin concentrations in both the Wernicke's area and the Broca's area of ​​the brain. If the degree is equal to or greater than a predetermined value (thresholds A1 and C1, respectively), it is determined to be in an adaptive state, and the brain's well-being is improved. The oxygenated hemoglobin concentration in at least one of the Broca's area and the Beck's area is below the threshold A1, C If the value is less than 1, it can be determined that the state is non-adaptive. , the oxygenated hemoglobin concentration in both Wernicke's area and Broca's area of ​​the brain reaches a predetermined value ( If the thresholds A2 and C2 are exceeded, the memory is determined to be in a fixed state, and the Wernicke's syndrome of the brain is The oxygenated hemoglobin concentration in at least one of the areas is below the thresholds A2 and C2, respectively. If it is full, it is determined that the memory is not fixed.

[0067] It should be noted that each of the above modifications can be combined with other modifications. [Explanation of symbols]

[0068] 10...detection device, 11...head-mounted unit, 12...optical fiber channel, 12a, 12b...optical Fiber, 13...information generating unit, 20...setting device, 30...control device, 31...acquiring unit, 32... State determination unit 33... playback control unit 34... stimulation control unit 35... memory consolidation determination unit 36... memory unit, 40... playback device, 50... stimulation device, 51... visual stimulation unit, 52... tactile stimulation unit, 53 ...Olfaction stimulation unit, 100...Memory consolidation device

Claims

1. Oxyhemoglobin and deoxyhemoglobin concentrations in Wernicke's and Broca's areas of the brain of subjects were an acquisition unit that acquires brain activity information indicating differences in bin density; Based on the acquired brain activity information, the activity state of a predetermined part of the brain of the subject is determined to be a predetermined state. a state determination unit that determines whether According to the determination result of the state determination unit, a content that stimulates the auditory sense of the subject is reproduced. a playback control unit for causing the device to play the Whether the content has been retained as a memory based on the acquired brain activity information is determined. a memory fixation determination unit that determines Equipped with The predetermined condition is a condition that affects the oxygenated hemoglobin concentration and deoxygenated hemoglobin concentration in the Wernicke's area of ​​the brain of the subject. The difference in the globin concentration is equal to or greater than the first threshold. Memory consolidation control device.

2. The playback control unit determines whether or not the content is being played back by the playback device in accordance with the determination result of the memory fixation determination unit. and a change in the playback mode of the content on the playback device. At least one of the following must be performed: The memory fixing control device according to claim 1 .

3. The memory consolidation determination unit determines whether the oxyhemoglobin concentration in the Wernicke's area of ​​the brain of the subject is the first If the difference is equal to or greater than the threshold value, it is determined that the content has been retained in memory.

3. The memory fixing control device according to claim 1 or 2.

4. When the content is played back, a stimulus is applied to a sense other than the subject's hearing. and a stimulus control unit for controlling the stimulus to be applied by the stimulus application device. The memory fixing control device according to any one of claims 1 to 3.

5. Oxyhemoglobin and deoxyhemoglobin concentrations in Wernicke's and Broca's areas of the brain of subjects were obtaining brain activity information indicating differences in bin density; Based on the acquired brain activity information, the activity state of a predetermined part of the brain of the subject is determined to be a predetermined state. and determining whether a playback device for playing content that stimulates the auditory sense of the subject in accordance with the determination result of the active state; and Whether the content has been retained as a memory based on the acquired brain activity information is determined. To judge and Including, The predetermined condition is determined by measuring the oxygenated hemoglobin concentration and deoxygenated hemoglobin concentration in the Wernicke's area of ​​the brain of the subject. The difference in the globin concentration is equal to or greater than the first threshold. Memory consolidation method.

Images