Electrostimulation noise elimination instrument

A technology of noise elimination and electrical stimulation, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve the problem of inapplicable elimination of artifact interference signals, etc.
CN101138495AActive Publication Date: 2008-03-12KUNMING INST OF ZOOLOGY CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
KUNMING INST OF ZOOLOGY CHINESE ACAD OF SCI
Publication Date
2008-03-12

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Abstract

The present invention discloses an electrical stimulation noise elimination instrument, which includes two microelectrodes used for collecting bioelectric signals. The signal output ends of the microelectrodes are output via a noise suppression circuit. The noise suppression circuit includes a differential amplification circuit and a resistance and capacity compensating circuit. The electric signals collected by the microelectrodes are respectively input into the two input ends of the differential amplification circuit via the resistance and capacity compensating circuit. With the electrical stimulation noise (artifact) elimination instrument of the present invention, the electrical stimulation noises which are more than forty times larger than the bioelectric signals can be eliminated. Therefore, the present invention is beneficial to the organic combination of two nerves electrical physiology study techniques of the electrical stimulation and the unit discharging records, which takes a positive promotion effect on the study of the nerves electrical physiology.
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Description

technical field

[0001] The invention relates to the technical field of EEG signal processing, in particular to a device for eliminating electrical stimulation artifacts (noise) in EEG signals. Background technique

[0002] Single nerve recording and electrical stimulation are the two cornerstones of neurophysiological research techniques. If the two can be organically combined, that is, while electrically stimulating one brain structure while recording the electrical activity of neurons in another related brain structure, it will greatly enhance the scientific research capabilities in this technical field and open up a series of research A new field that revolutionizes brain research. However, when we electrically stimulate the superstructure, the electrical pulses released by the stimulating electrodes will cause huge electromagnetic interference (artifacts) to the downstream neuronal recording electrodes, making it impossible to observe its electrical activity.

[0003] ...

Claims

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