70 results about "Transcranial direct-current stimulation" patented technology

A method for changing appearance of EEG or a relationship of brain wave patterns while achieving behavioral changes, the method including individualized assessing of dysregulated patterns of brain function using topographic quantitative electroencephalogram (LORETA [low resolution brain electromagnetic tomography] qEEG) or regular EEG recollection, modifying or priming neuroplasticity with transcranial direct current stimulation (tDCS) or with magnetic or electromagnetic fields to modify cortical excitability of neurons in dysregulated areas, and self-regulating LORETA patterns with neurofeedback to change an appearance of EEG or a relationship of brain wave patterns while achieving behavioral changes.

The invention discloses a high-focusing-capability multi-channel transcranial direct current stimulation device and a control method thereof. The high-focusing-capability multi-channel transcranial direct current stimulation device comprises a transcranial direct current stimulation (tDCS) electrode array, a power source and control units, wherein channel electrodes in the electrode array are connected with the power source respectively through independent control units, polarity and current strength of the channel electrodes are respectively controlled through the independent control units, and the tDCS electrode array is integrated into an electrode cap mode. The high-focusing-capability multi-channel transcranial direct current stimulation device can complete automatic optimization of stimulation parameters of the channels according to stimulation positions and types specified by users, and finally generates stimulation meeting users' requirements. A tDCS system of the high-focusing-capability multi-channel transcranial direct current stimulation device has the advantages of being capable of covering the whole head, having high focusing capability and multiple channels and the like, and is accurate in stimulation position and customizable in complex stimulation.

The invention discloses a mirror movement neuromodulation system, which comprises a plurality of lead biological signal amplifiers, a microcomputer controller, a plurality of lead functional electric stimulators and a micro-current direct-current constant-current stimulator. The principle that functional electric stimulation and transcranial direct-current electric stimulation techniques and mirror movement neurons participate in movement control is applied comprehensively, the biological signal amplifiers, the functional electric stimulators for simulating integrated electromyography envelope signal control, and the micro-current direct-current constant-current stimulator are integrated through the microcomputer controller, myoelectric activity envelope signals are generated by processing myoelectric signals of a plurality of muscle groups which move functionally by using an uninjured side limb, and the plurality of functional electric stimulators are modulated and controlled, so that the same mirror action is generated by the plurality of muscle groups of an injured limb on an opposite side according to uninjured side myoelectric information, brain functional regulation and reconstruction are realized, the plasticity of neuronal synapsis and the recovery of neurological functions are facilitated, and the treatment effect of sports rehabilitation is achieved.

The invention relates to a fatigue detection and regulation method based on an electroencephalogram and eye movement bimodal signal, belongs to the technical field of fatigue detection and regulation,and solves the problems in the prior art that the fatigue degree of a high-load operator cannot be continuously monitored and nerve regulation is not timely performed. A fatigue prediction model based on electroencephalogram-eye movement bimodal uses a machine learning method to analyze bimodal fusion features, that is, a fusion result of electroencephalogram features and eye movement features, recognizes the brain fatigue state of the operator, and according to the detection result, judges whether or not neuromodulation is required. If not required, the operator can continue to work and maintain high job performance. If necessary, a transverse brain intervention is applied by using transcranial direct current stimulation. Through bidirectional closed-loop fatigue monitoring and adaptiveregulation, the excitability of a cerebral cortex functional area is adjusted, thereby improving the physiological state of the operator and ensuring the efficiency and stability of the job performance.

The present invention discloses a transcranial direct current stimulation device and a work method thereof. The device comprises a processing unit arranged in housing, the housing is provided with a simulation electrode jack, a system display screen, a system power switch, a current regulation knob and a control button, the simulation electrode jack, the system display screen, the system power switch, the current regulation knob and the control button are all connected with the processing unit, the simulation electrode jack has an anode and a cathode, the processing unit arranged in the housing is employed to control the current and the time, the electrode plugged in the simulation electrode jack is employed to treat patients, an impedance detection module is configured to monitor whether the simulation electrode is contacted with the scalp or not, and a current detection module is configured to detect whether the current is too big or not. The transcranial direct current stimulation device can measure and the impedance of a simulation brain region in real time in the electrical stimulation process, and is small in size, light in weight, easy to carry and simple to operate.

The invention discloses transcranial direct current stimulation equipment. The transcranial direct current stimulation equipment comprises a power module, a storage module, a brain electricity collection module, an intelligent module, a micro processor and a stimulation electrode, wherein the storage module is used for storing a brain wave model; the brain electricity collection module is used forcollecting a brain wave signal of a user; the intelligent module is connected with the storage module, the brain electricity collection module and the micro processor; the intelligent module is usedfor outputting a current control signal to the micro processor according to the brain wave model and the brain wave signal, collected by the brain electricity collection module, of the user; the microprocessor is connected with the stimulation electrode; the micro processor is used for controlling stimulation current in the stimulation electrode according to the current control signal output by the intelligent module. The transcranial direct current stimulation equipment disclosed by the invention can control the stimulation current in the stimulation electrode according to the preset brain wave model. Compared with the prior art, the transcranial direct current stimulation equipment can effectively reduce such a phenomenon as excessive stimulation or lack of stimulation so as to enhancethe therapeutic effect.

The invention discloses a portable transcranial direct-current stimulation system used for smoking cessation. The system comprises a constant current generator and a positioning cap, wherein the intensity of the current output by the constant current generator rises to the target current value from 0 mA within the certain period of time, and the target current is kept being output by a certain period of time. The positioning cap comprises two electrodes which are connected with the constant current generator and used for achieving transcranial direct-current stimulation. Rubber positioning shafts are arranged at the front end and the rear end of the positioning cap respectively. The front end protrudes to correspond to a nose root, and the rear end protrudes to correspond to occipital protuberance. Connection rings are arranged on the left side and the right side of the positioning cap respectively and used for being connected and fixed to a head through hook-and-loop fasteners. The system can be conveniently used by smokers in daily life, smokers who want to give up smoking can be effectively helped to resist the eager, and the probability that the smokers smoke again is lowered.

The invention discloses transcranial direct-current stimulation intelligent equipment. The principle of the transcranial direct-current stimulation intelligent equipment is that 10muA-2mA micro current is utilized to stimulate the brain to realize functional changing of the brain. The transcranial direct-current stimulation intelligent equipment is matched with an electrode head sleeve, thus increasing easy wearable property and practicality of the equipment. The transcranial direct-current stimulation intelligent equipment can be connected with electronic devices, such as a mobile phone, is simple and intelligent in the application method, and is small and concise in design.

The invention discloses an attention regulating method based on transcranial direct current stimulation. The method comprises the following steps: sequentially carrying out downsampling, filtering anddata striping preprocessing on EEG data before and after the transcranial direct current stimulation; calculating a P300 difference value in positive and negative emotions by using a coherent averaging algorithm, and taking the P300 difference value as an electrophysiological index for evaluating the regulating effect; calculating classification accuracy in the positive and negative emotions through behavioral data, and extracting the emotion error rate to serve as the regulation effect; comparing the change conditions of the electrophysiological indexes and behavioral indicators before and after regulation, and comprehensively evaluating the regulation effect according to a P300 difference value index and an emotion error rate index, so as to obtain a final regulation effect. According to the attention regulating method disclosed by the invention, the problem that evaluation and detection of emotional attention mainly rely on scale and subjective scoring, which leads to poor objectivity is solved.

The invention belongs to the technical field of transcranial direct current stimulation and discloses a transcranial direct current stimulation device and a data processing method. The transcranial direct current stimulation device comprises a power supply module, a current detection module, an EEG wave detection module, a master control module, a current regulating module, an electrical stimulation module, a parameter regulating module, an optimization module and a display module. The device can simplify the regulation process of electric stimulation parameters and improve timeliness of regulation of the electrical stimulation parameters by the parameter regulation module; meanwhile, characteristic signals are selected and optimized according to time domain information of EEG of a somatosensory electrical stimulation brain-computer interface by the optimization module, selection for the most related signals of specific tasks and optimization and simplification of a brain-computer interface system can be realized, promotion and use of the somatosensory electrical stimulation brain-computer interface in practice are facilitated, and the device is wide in application range and simpleto operate; and extraction of accurate characteristic signals is facilitated and the performance of the brain-computer interface system is improved.

Described is a system for treating traumatic memories. During a wake stage, a virtual environment is displayed to a subject. A traumatic episode that may be similar to a traumatic memory of the subject is displayed to the user in the virtual environment in a benign setting. A transcranial current stimulation (tCS) controller applies a pattern of transcranial direct current stimulation (tDCS) to the subject during the traumatic episode, such that the traumatic memory in a benign setting is associated with the pattern of tDCS. During a sleep stage, if slow-wave sleep in the subject is detected via electroencephalogram (EEG) recordings, then in a first time period, the tCS controller may a transcranial alternating current stimulation (tACS) to the subject followed by a second time period without stimulation. In a third time period, the tCS controller may apply the pattern of tDCS to the subject. The sleep stage may be repeated until a desired weakening of the traumatic memory is reached.

Improved neuromodulation control of neurological abnormalities associated with effector organs in vertebrate beings using direct current stimulation for modulating spinal cord excitability, having a peripheral-current supplying component for providing direct current peripheral nerve stimulation and a spinal-current supplying component providing direct current for spinal stimulation, and a controller managing such functions.

The invention discloses a method for improving attention breadth through transcranial direct current stimulation and a device thereof, and the method comprises the following steps: randomly presentingcharacter strings with a plurality of lengths in a specified region of a screen; when a testee judges the length of the character string, recording the response time and the answer correctness of each question of the testee, collecting a testee electroencephalogram signal so as to test the response time and evaluate the score, and evaluating the activation condition of the brain during the attention breadth experiment through the electroencephalogram signal; employing an electrical stimulator, using a tDCS anode electrode for stimulating the dorsal-lateral forehead cortex on one side, and meanwhile placing a tDCS cathode electrode on the other side. According to the method, the attention breadth can be effectively improved, the improvement effect can be evaluated, and the method is simpleand easy to implement.

The invention provides an auxiliary memory system based on transcranial direct current stimulation. The system comprises an electrical stimulator, an acquisition device and a training device. The training device selects different memory load materials for different working memory sub-components, and designs three different modes of training. The acquisition device collects electroencephalogram information of a user in different training modes before and after electrical stimulation, and provides references for the electrode placement position, stimulation duration and current density of the electrical stimulation instrument through comparison and statistics. The electrical stimulator activates the corresponding brain area to the maximum extent, and the effect of working memory is improved in cooperation with training in different modes. After the electrical stimulation is finished, the training without electrical stimulation is carried out again, and the improvement effect brought by the electrical stimulation can be extended to the position after the electrical stimulation is removed.

The invention proposes a system and a method for controlling the process of prescription and administration of direct current stimulation treatments in humans. In the proposed system, the stimulation parameters are all set by a specialist whose credentials are verified through a specific control device different from the device that delivers electrical stimulation. The stimulating device can deliver the stimulation only if the credentials of the specialized subject making the prescription are verified and if the prescription is made according to safety criteria. The system is composed by at least one device for the administration of electrical current connected to two electrodes applied over the skin and by a control device. The control device is connected to one or more devices for the administration of the direct current through a communication channel. The specialist gives his own credentials and is authorized at making the prescription and, accordingly, programming the stimulating device. The prescription defines the stimulus intensity, waveform, polarity, duration, the minimum interval between two consecutive stimulations and the maximum number of stimulations allowed. The stimulating device delivers the stimulation only if the credentials of the specialist are verified and only according to the prescription.

A device for transcranial stimulation. The device for transcranial stimulation comprises an adjustable current source for providing a stimulation current; a first electrode connected to the current source for electrical connection to a patient; a second electrode connected to the current source for electrical connection to the patient; a first current interruptor for interrupting current flow between the current source and the electrode, the first current interruptor connected between the adjustable current source and the first electrode; and an output monitor connected between the current source and the first electrode for monitoring current to the patient. The output monitor detects an abnormal current it signals the first interruptor, which interrupts the current to the patient. A method of operating a device for transcranial stimulation is also provided.