Multichannel synchronous cochlea auditory nerve action potential measuring system and multichannel synchronous cochlea auditory nerve action potential measuring method

Abstract

The invention discloses a multichannel synchronous cochlea auditory nerve action potential measuring system and a multichannel synchronous cochlea auditory nerve action potential measuring method. The multichannel synchronous cochlea auditory nerve action potential measuring system comprises a flexible multichannel electrode array, a pre-amplification unit, a multichannel A / D (analog / digital) conversion unit, a signal processing controller, a data caching and transmitting unit, an upper machine and a display unit, wherein the flexible multichannel electrode array is used for acquiring local auditory nerve action potential signals; the pre-amplification unit is connected with outgoing lines of the multichannel electrode array and amplifies weak auditory nerve potential signals acquired by electrodes respectively and independently; the multichannel A / D conversion unit is used for converting multichannel electric signals outputted from the pre-amplification unit into corresponding digital signals; the signal processing controller is respectively connected with the various units and is used for transmitting corresponding control signals to the various units and reading configuration commands, which are downloaded from the upper computer, in a memory; the data caching and transmitting unit is used for locally storing various acquired channels of parallel data or directly transmitting the parallel data to the upper computer which is used for processing the parallel data; and by the upper computer and the display unit, various measurement parameters are set, the acquired data are processed, and auditory nerve synchronous potential waveforms of a selected observation channel are displayed correspondingly.

Description

technical field [0001] The invention relates to the field of biological auditory and electrophysiological signal measurement, in particular to a measurement system capable of synchronously recording cochlear auditory nerve potentials through multiple channels. Background technique [0002] The electrophysiological measurement of the auditory system is of great significance to the study and analysis of the auditory mechanism. At present, the electrophysiological measurement methods for the auditory system mainly include auditory brainstem response ABR (Auditory Brainstem Response) and auditory nerve compound action potential CAP (Compound Action Potential). Among them, ABR records the conduction of the auditory system to the external stimulus after reaching the auditory nerve A series of bio-electrophysiological waveforms to the pons and thalamus, through the judgment of the parameters of the waveforms, to determine whether the auditory pathway is normal. The CAP auditory ne...

AI Technical Summary

Problems solved by technology

The currently used auditory nerve electrophysiological measurement methods (such as: ABR, CAP) cannot achieve multi-channel synchronous and real-time accurate measurement of the local neural response corresponding to the internal topology of the cochlea.

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