Simultaneous stimulating and recording system of cross sensory channels of sight, sound and body sense

Abstract

The invention relate to a simultaneous stimulating and recording system of cross sensory channels of sight, sound and body sense, comprising a stimulus control host, an audio-visual stimulus device, an electroencephalogram (EEG) signal filter amplifier and a digital EEG signal recording device, wherein, the stimulus control host is connected with the audio-visual stimulus device; the audio-visualstimulus device is connected with the EEG signal filter amplifier through a testee; and the output end of the EEG signal filter amplifier is connected with the digital EEG signal recording device. The main technical characteristics are as follows: the audio-visual stimulus device is connected with the triggering signal input ends of two body sense stimulators and the marking signal input ends of the EEG signal filter amplifier through a marking signal distributor; and the output ends of the two body sense stimulators are connected with the EEG signal filter amplifier through a testee. By utilizing the system, the function of inducing and recording the stimulus of three sensory channels is realized in a programming manner, and the problem that the prior art can realize the united presentation of the stimulus of only two sensory channels is solved and the research field of (evoked potentials) ERPs is broadened.

Description

technical field [0001] The invention belongs to the field of biomedical signal detection, in particular to a visual, auditory and somatosensory simultaneous stimulation and recording system across sensory channels. Background technique [0002] Event-related potentials (Event Related Potentials, ERPs) are a type of electroencephalogram (EEG) closely related to sensory and cognitive activities. In the 1960s, Sutton et al. proposed the concept of event-related potentials, and recorded the brain-evoked potentials from the surface of the scalp through the average superposition technique to reflect the neurophysiological changes of the brain during the cognitive process, because the event-related potentials are related to the cognitive process. Therefore, it is considered to be a reflection of the 'embedded' function of the brain, and it is also a window for us to understand the brain. ERPs are a kind of Evoked Potentials (EPs), which are divided into Auditory Evoked Potentials ...

AI Technical Summary

Problems solved by technology

However, the existing technology can only realize the combination of visual and auditory sensory channel stimulation, and cannot combine SEP with VEP and AEP signals. The main reason is that the three-channel combined stimulation system has relatively high requirements for stimulation triggering technology, and it is difficult to trigger simultaneously. Stimulation of three channels and accurate marking of stimulation trigger time

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