A multi-channel neuron signal acquisition control and transmission device

Abstract

The invention discloses a multichannel neuron signal collection controlling and transmission device which comprises a preposed impedance conversion module, an analog amplification and analog-digital conversion plate, a data collection and processing module, a data transmission control module, a stimulation controller, a stimulation waveform generating module, a mobile power source, a network interface / optical fiber conversion module and an upper computer. Aiming at requirements of nerve electrophysiology on neutron information analysis, an FPGA (field programmable gate array)-based multichannel parallel collection device capable of performing synchronous stimulation is designed, the device is suitable for multichannel neutron signal extraction aiming at animals, and various programmable simulation waveforms are provided. The multichannel neuron signal collection controlling and transmission device is flexible to control and convenient to operate, parts of a control system can be simultaneously controlled to complete various nerve electrophysiological experiments to extract information that a user is interested in through an upper computer command packet, and the device is a novel reliable nerve electrophysiological experiment tool.

Description

technical field [0001] The invention belongs to the field of biomedical engineering, and relates to a bioelectric signal acquisition and processing technology, in particular to a multi-channel neuron signal acquisition regulation and transmission device, which is applied to signal acquisition and experimental stimulation of neurophysiological aspects. Background technique [0002] Neuroscience is an important branch in today's scientific research field. There are many research teams engaged in related work from the micro level, the meso level to the macro level. Among them, in terms of the understanding and regulation of neuron functions at the mesoscopic layer, the acquisition and regulation of neuron electrical signals are necessary means for research. [0003] Many behaviors of mammals are realized through the interaction between neurons in the brain. The analysis and understanding of specific brain functions at the neuron level requires the acquisition of relevant neuron...

AI Technical Summary

Problems solved by technology

The Chinese patent application number is: 201210358686.2, and the name is: photoelectric array and preparation method for neuron stimulation and electrical signal recording. The above technologies provide a neuron collection and stimulation device and method respectively. The disadvantages are: the former It is based on multi-channel switching technology and cannot achieve multi-channel synchronization. The latter uses light stimulation technology and photoelectric microarray technology, which is essentially different from this application

[0007] The article "Virtual Neuron Action Potential Signal Recorder" in the 2001 Volume 25 No. 17 of "Journal of Instrumentation" introduced the use of computer sound card and DirectX API software of Windows 9x to realize the recording of neuron signal for neuron action potential signal. acquisition, but only for computer-based platforms with a limited number of channels

"Journal of Shandong University of Science and Technology" (Natural Science Edition), the article "Miniature Signal Acquisition and Processing System" in Volume 28, No. 9, 2009 introduced a portable micro-recording system using PSoC chip, which realized the neuron signal acquisition, but it is based on serial communication and cannot achieve multi-channel data acquisition

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