Suitable for Implantation of Depth Dynamically Adjustable Electrodes in Animal Brains

Abstract

The invention discloses a dynamically adjustable electrode suitable for implanting in the brain area of ​​animals, which includes a microelectrode and an electrode wire depth adjustment device. The electrode wire depth adjustment device includes an upper and lower support plate and an adjustment plate. The two guide columns arranged at intervals are connected as a whole; a screw with a bolt structure is vertically arranged between the two guide columns, the lower end of the screw is rotated in the bushing arranged on the lower support plate, and the upper end of the screw is rotated in the upper In the stepped hole on the support plate, the adjustment plate slides and fits on the two guide columns through the through hole, and the middle part of the adjustment plate is driven by the screw joint and the screw thread; a stainless steel positioning tube is fixed vertically downward through the lower support plate; the microelectrode is fixed on the On the adjustment plate, the electrode wire of the microelectrode is passed through the stainless steel positioning tube vertically downward. The invention solves the problem that the depth adjustment methods of detection electrodes and stimulation electrodes are not universal, and has flexible forms and wide application.

Description

Technical field [0001] The invention relates to the field of animal motion behavior induction and neural mechanism analysis, in particular to a dynamic adjustable electrode suitable for implanting a depth in the brain area of ​​an animal. Background technique [0002] Microelectrodes or microelectrode arrays are the interface between the nervous system and external electronic circuits, which play an important role in recording electrical signals from brain fibers to analyze the working mechanism of the brain, or using electrical signals to stimulate neural activity to achieve functional electrical stimulation. Determine the effect of signal acquisition or stimulation of the entire system. Microelectrodes can be implanted in two ways, acute and chronic. The microelectrodes are implanted into designated nerve sites using a brain stereotaxic device to achieve the function of signal acquisition or stimulation. The acute implantation method is to adjust the implantation depth of the ...

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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