Non-invasive deep brain region electrical stimulation device

Abstract

The invention discloses a non-invasive deep brain region electrical stimulation device which comprises a signal source, a main circuit and a protection control circuit. The signal source is an external signal source and can generate sinusoidal voltage signals of any amplitude within a safe voltage limiting range and input the signals into the main circuit. The main circuit provides alternating current output with constant amplitude and reduces interference caused by current imbalance between the two electrodes. The protection circuit monitors the magnitude of the output current in real time, and when the current is too large, the single-chip microcomputer immediately controls the relay to be powered off to stop the stimulation process. By combining the signal source, the main circuit and the protection control circuit, a stable alternating current signal can be output, whether stimulation is carried out or different stimulation modes are determined according to a calculation result of an upper computer on electroencephalogram signal characteristics, and in addition, when the circuit detects that the current exceeds the human body safety current, the stimulation switch can be immediately switched off to ensure the safety of the subject.

Description

technical field [0001] The invention belongs to the technical field of cognitive neuroscience and medical test equipment, and relates to a non-invasive deep brain area electrical stimulation equipment. Background technique [0002] Transcranial alternating current stimulation (tACS) is a method of adjusting the spontaneous neurophysiological activity of specific brain regions by placing electrodes on the scalp and applying a weak (sinusoidal amplitude <2mA) fixed-frequency stable alternating current signal. The technology can intervene in many activities related to brain cognition (such as exercise, memory, emotion, etc.). [0003] By applying a weak sinusoidal signal to the brain, tACS can induce neuronal firing activities that are synchronized with the frequency of the applied electric field. Therefore, tACS is thought to enhance endogenous neuronal electrical activity at specific frequencies. At present, the specific mechanism of tACS affecting cognitive function is ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide the circuit design of the non-invasive deep brain area electrical stimulation equipment, through the signal source, the main circuit, the protection control circuit, and adopt the multi-channel synchronous control output scheme, which solves the problem of the existing transcranial AC electrical stimulation technology. The deep brain areas of animals are not significantly affected, and it is impossible to monitor brain activity in real time and choose an appropriate stimulation mode

Images