CN116549843A - Intervention current control method and device for transcranial direct current stimulation and terminal equipment - Google Patents
Intervention current control method and device for transcranial direct current stimulation and terminal equipment Download PDFInfo
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Abstract
The invention discloses an intervention current control method and device for transcranial direct current stimulation and terminal equipment, wherein the method comprises the following steps: acquiring an electroencephalogram signal based on the electroencephalogram detection electrode, and determining brain state information of a user based on the electroencephalogram signal, wherein the brain state information is used for reflecting the brain excitation degree of the user; determining the current change speed of the intervention stimulation electrode according to the brain state information, wherein the current change speed is smaller than a preset speed threshold; and controlling the intervention current of the intervention stimulation electrode according to the current change speed. The invention can control the intervention stimulation electrode to rise or fall at the current change speed lower than the speed threshold value, thereby ensuring the comfort and safety of the intervention current on brain stimulation.
Description
Technical Field
The invention relates to the technical field of transcranial electric stimulation equipment control, in particular to a transcranial direct current stimulation intervention current control method, device and terminal equipment.
Background
In a transcranial direct current stimulation device, two electrodes are included: the brain wave signal detection device comprises a detection electrode and a stimulation electrode, wherein the detection electrode is used for collecting brain wave signals to evaluate the stimulation effect, and the stimulation electrode is used for performing intervention stimulation on the cerebral cortex. However, in the existing transcranial direct current stimulation equipment, the speed of current rising or falling cannot be well controlled when the stimulation electrode is powered on or powered off, so that a user is uncomfortable to use, and a certain potential safety hazard easily exists.
Accordingly, there is a need for improvement and advancement in the art.
Disclosure of Invention
The invention aims to solve the technical problems that the current rising or falling speed cannot be well controlled when a stimulating electrode is electrified or electrified in the transcranial direct current stimulation equipment in the prior art, so that a user is uncomfortable to use and a certain potential safety hazard is easy to exist.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides an intervention current control method of transcranial direct current stimulation, the method being applied to a transcranial direct current stimulation device including an electroencephalogram detection electrode for acquiring an electroencephalogram signal of a user and an intervention stimulation electrode for stimulating anterior temporal lobe and forehead lobe of the brain with weak current, the method comprising:
acquiring an electroencephalogram signal based on the electroencephalogram detection electrode, and determining brain state information of a user based on the electroencephalogram signal, wherein the brain state information is used for reflecting the brain excitation degree of the user;
determining the current change speed of the intervention stimulation electrode according to the brain state information, wherein the current change speed is smaller than a preset speed threshold;
and controlling the intervention current of the intervention stimulation electrode according to the current change speed.
In one implementation, the determining brain state information of the user based on the brain electrical signal includes:
acquiring the electroencephalogram signals within a preset time period, analyzing the electroencephalogram signals based on a preset APP, and determining fluctuation curve data of the electroencephalogram signals;
determining the highest point and the lowest point in the fluctuation curve data based on the fluctuation curve data, and determining the fluctuation amplitude based on the highest point and the lowest point;
and determining the brain state information according to the fluctuation amplitude.
In one implementation, the determining the current change rate of the intervention stimulus electrode according to the brain state information includes:
determining the current change time of the intervention stimulation electrode according to the brain state information;
and acquiring a preset current target value, and determining the current change speed according to the current change time and the current target value.
In one implementation, the determining the current change time of the intervention stimulus electrode according to the brain state information includes:
if the brain state information is in an excited state, determining the current change time of the intervention stimulation electrode as a first time;
if the brain state information is in a calm state, determining the current change time of the intervention stimulation electrode as a second time;
the duration of the first time is greater than the duration of the second time, and the duration of the second time is greater than a duration minimum value, wherein the duration minimum value is determined based on the speed threshold and a preset current target value.
In one implementation, the determining the current change time of the intervention stimulus electrode according to the brain state information further includes:
determining the sensitivity degree of the brain intervention position according to the brain state information, wherein the sensitivity degree is used for reflecting the response of the brain intervention position to the intervention current;
based on the sensitivity level, a current change time of the intervening stimulation electrode is determined.
In one implementation, the determining the sensitivity degree of the brain intervention location according to the brain state information includes:
if the brain state information is in an excited state, determining that the sensitivity degree is a first degree;
and if the brain state information is in a calm state, determining that the sensitivity degree is a second degree, wherein the first degree is lower than the second degree.
In one implementation, the controlling the intervention current of the intervention stimulation electrode according to the current change speed includes:
if the intervention stimulation electrode of the transcranial direct current stimulation equipment is in a power-on state, controlling the intervention current of the intervention stimulation electrode to rise at the current change speed;
and if the intervention stimulation electrode of the transcranial direct current stimulation device is in a power-down state, controlling the intervention current of the intervention stimulation electrode to decrease at the current change speed.
In a second aspect, an embodiment of the present invention further provides an intervention current control device for transcranial direct current stimulation, where the device is connected to a preset transcranial direct current stimulation apparatus, the transcranial direct current stimulation apparatus includes an electroencephalogram detection electrode and an intervention stimulation electrode, the electroencephalogram detection electrode is used for collecting electroencephalogram signals of a user, and the intervention stimulation electrode is used for stimulating anterior temporal lobe and forehead lobe of the brain using weak current, and the device includes:
the brain analysis module is used for acquiring brain electrical signals based on the brain electrical detection electrodes, determining brain state information of a user based on the brain electrical signals, wherein the brain state information is used for reflecting the brain excitation degree of the user;
the speed analysis module is used for determining the current change speed of the intervention stimulation electrode according to the brain state information, wherein the current change speed is smaller than a preset speed threshold;
and the current control module is used for controlling the intervention current of the intervention stimulation electrode according to the current change speed.
In a third aspect, an embodiment of the present invention further provides a terminal device, where the terminal device includes a memory, a processor, and an intervention current control program for transcranial direct current stimulation stored in the memory and executable on the processor, and when the processor executes the intervention current control program for transcranial direct current stimulation, the processor implements the steps of the intervention current control method for transcranial direct current stimulation in any one of the above schemes.
In a fourth aspect, an embodiment of the present invention further provides a computer readable storage medium, where the computer readable storage medium stores an intervention current control program for transcranial direct current stimulation, where the intervention current control program for transcranial direct current stimulation, when executed by a processor, implements the steps of the intervention current control method for transcranial direct current stimulation according to any one of the above schemes.
The beneficial effects are that: compared with the prior art, the invention provides an intervention current control method for transcranial direct current stimulation. And then, according to the brain state information, determining the current change speed of the intervention stimulation electrode, wherein the current change speed is smaller than a preset speed threshold value. Finally, according to the current change speed, the intervention current of the intervention stimulation electrode is controlled. Because the current change speed of the intervention current is smaller than the speed threshold, the invention can control the intervention stimulation electrode to rise or fall at a lower current change speed, keep the intervention current to change steadily, and ensure the comfort and safety of the intervention current to brain stimulation.
Drawings
Fig. 1 is a flowchart of a specific implementation of a transcranial direct current stimulation intervention current control method according to an embodiment of the present invention.
Fig. 2 is a functional schematic diagram of an intervention current control unit for transcranial direct current stimulation according to an embodiment of the present invention.
Fig. 3 is a schematic block diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and more specific, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment provides an intervention current control method for transcranial direct current stimulation, which can control an intervention stimulation electrode to rise or fall at a low current change speed based on the method of the embodiment, keep the intervention current to change steadily, and ensure the comfort and safety of the intervention current on brain stimulation. When the method is specifically applied, the method can be applied to transcranial direct current stimulation equipment, the transcranial direct current stimulation equipment comprises an electroencephalogram detection electrode and an intervention stimulation electrode, the electroencephalogram detection electrode is used for collecting electroencephalogram signals of a user, and the intervention stimulation electrode is used for stimulating anterior temporal lobes and forehead lobes of the brain by weak current. In specific implementation, the embodiment firstly acquires an electroencephalogram signal based on the electroencephalogram detection electrode, and determines brain state information of a user based on the electroencephalogram signal, wherein the brain state information is used for reflecting the brain excitation degree of the user. And then, according to the brain state information, determining the current change speed of the intervention stimulation electrode, wherein the current change speed is smaller than a preset speed threshold value. Finally, according to the current change speed, the intervention current of the intervention stimulation electrode is controlled. Because the current change speed of the intervention current is smaller than the speed threshold, the intervention current can be changed stably no matter the intervention stimulating electrode is electrified or electrified, and the comfort level of a user is ensured.
The intervention current control method for transcranial direct current stimulation can be applied to terminal equipment, wherein the terminal equipment can be a preset mobile terminal, such as a mobile phone or a tablet computer, or can also be intelligent equipment, such as a computer or an intelligent television. In a specific application, the terminal device of the embodiment is connected with a transcranial direct current stimulation device, the transcranial direct current stimulation device comprises an electroencephalogram detection electrode and an intervention stimulation electrode, the electroencephalogram detection electrode is used for collecting electroencephalogram signals of a user, the intervention stimulation electrode is used for stimulating anterior temporal lobe and forehead lobe of the brain by weak current, and the transcranial direct current stimulation device can enable the user to concentrate on working and enable the user to fall asleep better at night by stimulating the anterior temporal lobe and forehead lobe of the brain of the user. Specifically, as shown in fig. 1, the intervention current control method for transcranial direct current stimulation of the present embodiment includes the following steps:
and step S100, acquiring brain electrical signals based on the brain electrical detection electrodes, and determining brain state information of a user based on the brain electrical signals, wherein the brain state information is used for reflecting the brain excitation degree of the user.
In this embodiment, the electroencephalogram detection electrode and the intervention stimulation electrode in the transcranial direct current stimulation device are located at different positions and are respectively used for acting on different areas of the brain of the user so as to stimulate the corresponding brain areas, thereby helping the user to improve energy. When the transcranial direct current stimulation device of the embodiment works, firstly, the brain electrical signals of a user are collected through the brain electrical detection electrode, then the brain electrical signals are recorded, then, the brain cortex is stimulated through the intervention stimulation electrode, the brain cortex is stimulated through micro-current, then, the brain electrical detection electrode is restarted to collect the brain electrical signals after intervention stimulation, and the brain electrical signals before stimulation and the brain electrical signals after stimulation are compared and analyzed to analyze and count brain electrical stimulation effects.
In this embodiment, in order to control the intervention current of the intervention stimulation electrode, so that the intervention current can be more comfortable when acting on the human body, the embodiment may first acquire an electroencephalogram signal based on the electroencephalogram detection electrode, and perform preliminary analysis on the electroencephalogram signal, and determine brain state information of the user, where the brain state information reflects brain excitation degrees of the user, because the sensitivity degrees and the stimulation effects of the difference of the brain excitation degrees on the intervention computer are different.
In one implementation manner, the step S100 of this embodiment specifically includes the following steps:
step S101, acquiring the electroencephalogram signals within a preset time period, analyzing the electroencephalogram signals based on a preset APP, and determining fluctuation curve data of the electroencephalogram signals;
step S102, determining the highest point and the lowest point in the fluctuation curve data based on the fluctuation curve data, and determining the fluctuation amplitude based on the highest point and the lowest point;
and step 103, determining the brain state information according to the fluctuation amplitude.
Specifically, after the transcranial direct current stimulation device in the present embodiment is started, an electroencephalogram detection electrode is started first, a plurality of electroencephalogram detection electrodes are provided, and the plurality of electroencephalogram detection electrodes can be started simultaneously to detect an electroencephalogram signal of a user. After the electroencephalogram signal is detected, the transcranial direct current stimulation device of the embodiment sends the collected electroencephalogram signal to a preset terminal device, such as a mobile phone, wherein an APP can be preset in the terminal device, and the APP can analyze and display the received electroencephalogram signal so as to realize visual understanding of brain state information of a user. In this embodiment, the APP may process the received electroencephalogram signal and draw an electroencephalogram signal graph, so as to obtain the fluctuation curve data. The electroencephalogram graph can reflect the fluctuation state of the electroencephalogram, the electroencephalogram graph can reflect the maximum value and the minimum value of the electroencephalogram in a preset time period (namely the acquisition time of the electroencephalogram), and corresponds to the highest point (wave crest) and the lowest point (wave trough) in the electroencephalogram graph, and the fluctuation amplitude of the electroencephalogram can be determined based on the highest point (wave crest) and the lowest point (wave trough). Next, the present embodiment will determine the brain state information based on the fluctuation amplitude. Specifically, if the fluctuation amplitude is greater than a preset amplitude threshold, the brain state information may be determined to be an excited state; and if the fluctuation amplitude is smaller than a preset amplitude threshold value, the brain state information can be determined to be in a calm state. According to the embodiment, the fluctuation of the brain electrical signal is analyzed, so that the brain state information can be rapidly and accurately judged.
And step 200, determining the current change speed of the intervention stimulation electrode according to the brain state information, wherein the current change speed is smaller than a preset speed threshold.
After the brain state information is determined, the terminal device of the present embodiment determines, based on the brain state information, a current change speed of the intervention stimulus electrode, where the current change speed includes a current rise speed after the intervention stimulus electrode is started and also includes a current fall speed after the intervention stimulus electrode is closed. In order to ensure comfortable experience of the intervention stimulation electrode in the embodiment for a user during working, the embodiment needs to control the intervention current to slowly rise or slowly fall, so that a stinging sensation caused by the sudden increase of the intervention current is avoided, convenience is provided for the user, and safety is also ensured. Therefore, the current change speed of the present embodiment needs to be smaller than the preset speed threshold value, so as to ensure that the speed of the intervention current rising or falling is slower.
In one implementation manner, the step S200 of this embodiment specifically includes the following steps:
step S201, determining the current change time of the intervention stimulation electrode according to the brain state information;
step S202, a preset current target value is obtained, and the current change speed is determined according to the current change time and the current target value.
In this embodiment, if it is determined that the brain state information is an excited state, the current change time of the intervention stimulus electrode may be determined to be a first time. And if the brain state information is in a calm state, determining the current change time of the intervention stimulation electrode as a second time. Since the stimulating time of the intervention current is longer for the user in the excited state, the user in the excited state can be ensured to have enough time to feel the stimulating of the intervention current, and the user in the calm state can easily feel the stimulating of the intervention current, so that the time of the first time is longer than the time of the second time. However, since this embodiment needs to ensure that the intervention stimulus electrode rises or falls at a low current change speed, and keeps the intervention current smoothly changing, this embodiment predefines a duration minimum value, which can be determined based on the speed threshold and a preset current target value. The embodiment can ensure that the time length of the second time is longer than the minimum time length, so that the current change speed is smaller than the speed threshold no matter the brain state information of the user is in an excited state or a calm state, the intervention stimulation electrode can rise or fall at a lower current change speed, and the safety and the comfort of the use of the user are ensured.
In another implementation, the present embodiment may further determine a sensitivity level of a brain intervention location based on the brain state information, the sensitivity level being used to reflect a response of the brain intervention location to an intervention current. That is, the sensitivity to the intervention current is not the same when the brain state information of the user is in different states. And if the brain state information is determined to be in an excited state, determining that the sensitivity degree is a first degree. And if the brain state information is in a calm state, determining that the sensitivity degree is a second degree. Since the stimulus of the intervention current is less easily sensed by the user in the excited state and the stimulus of the intervention current is more easily sensed by the user in the calm state, the first degree is lower than the second degree in this embodiment. When the sensitivity degree is the first degree, the embodiment can determine that the current change time of the intervention stimulation electrode is the first time, when the sensitivity degree is the second degree, the embodiment can determine that the current change time of the intervention stimulation electrode is the second time, and likewise, the duration of the first time is longer than the duration of the second time, and the duration of the second time is longer than the duration minimum value, so that the current change speed is smaller than the speed threshold value, and the intervention current is ensured to change slowly no matter the brain state information of the user is in an excited state or a calm state.
And step S300, controlling the intervention current of the intervention stimulation electrode according to the current change speed.
After determining the current change speed, the embodiment can control the intervention current of the intervention stimulation electrode to change at the current change speed, such as current rising or current falling, so as to enable the intervention current to rise or fall slowly.
In one implementation, step S300 in this embodiment specifically includes the following steps:
step S301, if the intervention stimulation electrode of the transcranial direct current stimulation device is in a power-on state, controlling the intervention current of the intervention stimulation electrode to rise at the current change speed;
and step S302, if the intervention stimulation electrode of the transcranial direct current stimulation equipment is in a power-down state, controlling the intervention current of the intervention stimulation electrode to decrease at the current change speed.
When the intervention stimulation electrode of the transcranial direct current stimulation device is in the power-on state, the intervention current of the intervention stimulation electrode is controlled to rise to the current target value at the current change speed. Since the current change speed is smaller than the preset speed threshold, the intervention current is slowly increased, so that the user does not feel a tingling sensation when using the transcranial direct current stimulation device. And when the intervention stimulation electrode of the transcranial direct current stimulation device of the embodiment is in a power-down state, controlling the intervention current of the intervention stimulation electrode to drop from the current target value to 0 at the current change speed. The intervention current of this embodiment may be 1-2mA, and the first time and the second time may be set within 30 seconds, ensuring that the user may raise the intervention current to the current target value within 30 seconds. Of course, in other implementations, the APP in the terminal device of this embodiment may draw a curve for both the rising process and the falling process of the intervention current, where the abscissa of the curve is time and the ordinate is a current value, so that the change speed of the intervention current is intuitively reflected according to the slope of the curve.
In summary, the present embodiment may first obtain an electroencephalogram signal based on the electroencephalogram detection electrode, and determine brain state information of a user based on the electroencephalogram signal, where the brain state information is used to reflect a brain excitation degree of the user. And then, according to the brain state information, determining the current change speed of the intervention stimulation electrode, wherein the current change speed is smaller than a preset speed threshold value. Finally, according to the current change speed, the intervention current of the intervention stimulation electrode is controlled. Because the current change speed of the intervention current is smaller than the speed threshold, the intervention current can be changed stably no matter the intervention stimulating electrode is electrified or electrified, and the comfort level of a user is ensured.
Based on the above embodiment, the invention provides an intervention current control device for transcranial direct current stimulation, which is connected with preset transcranial direct current stimulation equipment, wherein the transcranial direct current stimulation equipment comprises an electroencephalogram detection electrode and an intervention stimulation electrode, the electroencephalogram detection electrode is used for collecting electroencephalogram signals of a user, and the intervention stimulation electrode is used for stimulating anterior temporal lobe and forehead lobe of the brain by weak current. As shown in fig. 2, the apparatus of the present embodiment includes: an electroencephalogram analysis module 10, a speed analysis module 20, and a current control module 30. Specifically, the electroencephalogram analysis module 10 in this embodiment is configured to obtain an electroencephalogram signal based on the electroencephalogram detection electrode, and determine brain state information of a user based on the electroencephalogram signal, where the brain state information is used to reflect the brain excitation degree of the user. The speed analysis module 20 is configured to determine a current change speed of the intervention stimulus electrode according to the brain state information, where the current change speed is less than a preset speed threshold. The current control module 30 is configured to control the intervention current of the intervention stimulation electrode according to the current change speed.
In one implementation, the electroencephalogram analysis module 10 comprises:
the electroencephalogram analysis unit is used for acquiring the electroencephalogram signals within a preset time period, analyzing the electroencephalogram signals based on a preset APP and determining fluctuation curve data of the electroencephalogram signals;
a fluctuation analysis unit for determining a highest point and a lowest point in the fluctuation curve data based on the fluctuation curve data, and determining a fluctuation amplitude based on the highest point and the lowest point;
and the state analysis unit is used for determining the brain state information according to the fluctuation amplitude.
In one implementation, the speed analysis module 20 includes:
a time determining unit, configured to determine a current change time of the intervention stimulation electrode according to the brain state information;
and the speed determining unit is used for acquiring a preset current target value and determining the current change speed according to the current change time and the current target value.
In one implementation, the time determining unit includes:
a first time determining unit, configured to determine a current change time of the intervention stimulus electrode as a first time if the brain state information is an excited state;
a second time determining unit, configured to determine a current change time of the intervention stimulation electrode as a second time if the brain state information is in a calm state; the duration of the first time is greater than the duration of the second time, and the duration of the second time is greater than a duration minimum value, wherein the duration minimum value is determined based on the speed threshold and a preset current target value.
In one implementation, the time determining unit further includes:
the sensitivity analysis unit is used for determining the sensitivity degree of the brain intervention position according to the brain state information, and the sensitivity degree is used for reflecting the response of the brain intervention position to the intervention current;
and the time analysis unit is used for determining the current change time of the intervention stimulation electrode based on the sensitivity degree.
In one implementation, the sensitive analysis unit includes:
a first degree analysis unit configured to determine the sensitivity degree as a first degree if the brain state information is an excited state;
and the second degree analysis unit is used for determining the sensitivity degree to be a second degree if the brain state information is in a calm state, wherein the first degree is lower than the second degree.
In one implementation, the current control module includes:
the current rising unit is used for controlling the intervention current of the intervention stimulation electrode to rise at the current change speed if the intervention stimulation electrode of the transcranial direct current stimulation device is electrified;
and the current reducing unit is used for controlling the intervention current of the intervention stimulation electrode to be reduced at the current change speed if the intervention stimulation electrode of the transcranial direct current stimulation device is powered down.
The working principle of each module in the transcranial direct current stimulation intervention current control device of the embodiment is the same as that of each step in the method embodiment, and is not repeated here.
Based on the above embodiment, the present invention also provides a terminal device, and a schematic block diagram of the terminal device may be shown in fig. 3. The terminal device may include one or more processors 100 (only one shown in fig. 3), a memory 101, and a computer program 102 stored in the memory 101 and executable on the one or more processors 100, for example, an intervention current control program for transcranial direct current stimulation. The one or more processors 100, when executing the computer program 102, may implement the various steps in an embodiment of an intervention current control method for transcranial direct current stimulation. Alternatively, the one or more processors 100, when executing the computer program 102, may implement the functions of the various modules/units of the transcranial direct current stimulated intervention current control arrangement embodiment, without limitation.
In one embodiment, the processor 100 may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
In one embodiment, the memory 101 may be an internal storage unit of the electronic device, such as a hard disk or a memory of the electronic device. The memory 101 may also be an external storage device of the electronic device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash card (flash card) or the like, which are provided on the electronic device. Further, the memory 101 may also include both an internal storage unit and an external storage device of the electronic device. The memory 101 is used to store computer programs and other programs and data required by the terminal device. The memory 101 may also be used to temporarily store data that has been output or is to be output.
It will be appreciated by persons skilled in the art that the functional block diagram shown in fig. 3 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the terminal device to which the present inventive arrangements are applied, and that a particular terminal device may include more or fewer components than shown, or may combine some of the components, or may have a different arrangement of components.
Those skilled in the art will appreciate that implementing all or part of the above-described methods may be accomplished by way of a computer program, which may be stored on a non-transitory computer readable storage medium, that when executed may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, operational database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual operation data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
In summary, the invention discloses a transcranial direct current stimulation intervention current control method, a device and terminal equipment, wherein the method comprises the following steps: acquiring an electroencephalogram signal based on the electroencephalogram detection electrode, and determining brain state information of a user based on the electroencephalogram signal, wherein the brain state information is used for reflecting the brain excitation degree of the user; determining the current change speed of the intervention stimulation electrode according to the brain state information, wherein the current change speed is smaller than a preset speed threshold; and controlling the intervention current of the intervention stimulation electrode according to the current change speed. The invention can control the intervention stimulation electrode to rise or fall at the current change speed lower than the speed threshold value, thereby ensuring the comfort and safety of the intervention current on brain stimulation.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An intervention current control method of transcranial direct current stimulation, characterized in that the method is applied to transcranial direct current stimulation equipment, the transcranial direct current stimulation equipment comprises an electroencephalogram detection electrode and an intervention stimulation electrode, the electroencephalogram detection electrode is used for collecting electroencephalogram signals of a user, the intervention stimulation electrode is used for stimulating anterior temporal lobe and forehead lobe of the brain by weak current, and the method comprises:
acquiring an electroencephalogram signal based on the electroencephalogram detection electrode, and determining brain state information of a user based on the electroencephalogram signal, wherein the brain state information is used for reflecting the brain excitation degree of the user;
determining the current change speed of the intervention stimulation electrode according to the brain state information, wherein the current change speed is smaller than a preset speed threshold;
and controlling the intervention current of the intervention stimulation electrode according to the current change speed.
2. The method of controlling intervention current for transcranial direct current stimulation according to claim 1, wherein the determining brain state information of a user based on the brain electrical signal comprises:
acquiring the electroencephalogram signals within a preset time period, analyzing the electroencephalogram signals based on a preset APP, and determining fluctuation curve data of the electroencephalogram signals;
determining the highest point and the lowest point in the fluctuation curve data based on the fluctuation curve data, and determining the fluctuation amplitude based on the highest point and the lowest point;
and determining the brain state information according to the fluctuation amplitude.
3. The method for controlling intervention current for transcranial direct current stimulation according to claim 1, wherein the determining a current change speed of the intervention stimulation electrode according to the brain state information comprises:
determining the current change time of the intervention stimulation electrode according to the brain state information;
and acquiring a preset current target value, and determining the current change speed according to the current change time and the current target value.
4. A method of controlling intervention current for transcranial direct current stimulation according to claim 3, wherein said determining a current change time of the intervention stimulation electrode based on the brain state information comprises:
if the brain state information is in an excited state, determining the current change time of the intervention stimulation electrode as a first time;
if the brain state information is in a calm state, determining the current change time of the intervention stimulation electrode as a second time;
the duration of the first time is greater than the duration of the second time, and the duration of the second time is greater than a duration minimum value, wherein the duration minimum value is determined based on the speed threshold and a preset current target value.
5. The method for controlling intervention current for transcranial direct current stimulation according to claim 3, wherein the determining the current change time of the intervention stimulation electrode according to the brain state information further comprises:
determining the sensitivity degree of the brain intervention position according to the brain state information, wherein the sensitivity degree is used for reflecting the response of the brain intervention position to the intervention current;
based on the sensitivity level, a current change time of the intervening stimulation electrode is determined.
6. The method of controlling intervention current for transcranial direct current stimulation according to claim 5, wherein determining the sensitivity of the brain intervention location based on the brain state information comprises:
if the brain state information is in an excited state, determining that the sensitivity degree is a first degree;
and if the brain state information is in a calm state, determining that the sensitivity degree is a second degree, wherein the first degree is lower than the second degree.
7. The method for controlling intervention current for transcranial direct current stimulation according to claim 1, wherein the controlling the intervention current for the intervention stimulation electrode according to the current change speed comprises:
if the intervention stimulation electrode of the transcranial direct current stimulation equipment is in a power-on state, controlling the intervention current of the intervention stimulation electrode to rise at the current change speed;
and if the intervention stimulation electrode of the transcranial direct current stimulation device is in a power-down state, controlling the intervention current of the intervention stimulation electrode to decrease at the current change speed.
8. An intervention current control device for transcranial direct current stimulation, characterized in that the device is connected with a preset transcranial direct current stimulation apparatus, the transcranial direct current stimulation apparatus comprises an electroencephalogram detection electrode and an intervention stimulation electrode, the electroencephalogram detection electrode is used for collecting electroencephalogram signals of a user, the intervention stimulation electrode is used for stimulating anterior temporal lobe and forehead lobe of the brain by weak current, and the device comprises:
the brain analysis module is used for acquiring brain electrical signals based on the brain electrical detection electrodes, determining brain state information of a user based on the brain electrical signals, wherein the brain state information is used for reflecting the brain excitation degree of the user;
the speed analysis module is used for determining the current change speed of the intervention stimulation electrode according to the brain state information, wherein the current change speed is smaller than a preset speed threshold;
and the current control module is used for controlling the intervention current of the intervention stimulation electrode according to the current change speed.
9. A terminal device, characterized in that it comprises a memory, a processor and an intervention current control program for transcranial direct current stimulation stored in the memory and executable on the processor, which processor, when executing the intervention current control program for transcranial direct current stimulation, realizes the steps of the intervention current control method for transcranial direct current stimulation as claimed in any of claims 1-7.
10. A computer readable storage medium, characterized in that it has stored thereon an intervention current control program for transcranial direct current stimulation, which, when executed by a processor, implements the steps of the intervention current control method for transcranial direct current stimulation as claimed in any of claims 1-7.
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