Electrode applicable to animal brain area and adjustable in implantation depth

Abstract

The invention discloses an electrode applicable to an animal brain area and adjustable in implantation depth. The electrode comprises a microelectrode and an electrode wire depth adjusting device. The electrode wire depth adjusting device comprises an upper supporting plate, a lower supporting plate and an adjusting plate. The upper and lower supporting plates are connected integrally through two guiding upright columns arranged at an interval. A screw of a bolt structure is perpendicularly arranged between the two guiding upright columns. The lower end of the screw is rotationally arranged in a shaft sleeve on the lower supporting plate, and the upper end is rotationally arranged in a step hole formed in the upper supporting hole. The adjusting plate is arranged on the two guiding upright columns in a sliding and sleeving manner by means of through holes. The middle part of the adjusting plate is in threaded transmission connected with the screw through a screw joint member. A stainless steel positioning pipe penetrates through the lower supporting plate and is vertically fixed downwards. The microelectrode is fixed on the adjusting plate, and electrode wires of the microelectrode are vertically inserted downwards into the stainless steel positioning pipe at intervals. The electrode provided by the invention solves the problem that depth adjusting modes of detection electrodes and exciting electrodes are not universal, is flexible in form and is wide in application.

Description

technical field [0001] The invention relates to the fields of animal motion behavior induction and neural mechanism analysis, and in particular relates to implanting a depth dynamic adjustable electrode suitable for animal brain regions. Background technique [0002] Microelectrodes or microelectrode arrays are the interface between the nervous system and external electronic circuits. They play an important role in recording fiber electrical signals from brain regions to analyze the working mechanism of the brain, or using electrical signals to stimulate neural activities to achieve functional electrical stimulation. Its performance Determines the effect of signal acquisition or stimulation of the entire system. There are two ways of microelectrode implantation: acute and chronic. Brain stereotaxy is used to implant microelectrodes into designated nerve sites to achieve signal acquisition or stimulation. The acute implantation method is to use the brain stereotaxic instrume...

AI Technical Summary

Problems solved by technology

However, in the chronic implantation method, since the microelectrode has been fixed on the skull, it is difficult to adjust the implantation depth of the microelectrode in the later stage. It often requires a large number of repeated implantation experiments on experimental animals to obtain ideal results.

Therefore, realizing a microelectrode depth adjustment device that can be used in chronic implantation is of great significance for neuroscience research, but there is no microelectrode depth adjustment device that is suitable for both detection and stimulation electrodes.

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