FPGA (field programmable gate array)-based electronic synapse experimental platform

Abstract

The invention provides an FPGA (field programmable gate array)-based electronic synapse experimental platform, which comprises a computer in signal connection with four FPGAs. A second FPGA and a third FPGA are in signal connection with a first FPGA as well as a fourth FPGA, and the four FPGAs are all connection with a digital-analog converter which is connected with an oscilloscope. The first FPGA serves as a first electronic nerve cell to generate action potential; the second FPGA generates excitatory synaptic current; the third FPGA generates inhibitive synaptic current; the fourth FPGA serves as a second electronic nerve cell without application of any external stimulation, and the stimulation derives from synaptic current. The experimental platform has advantages that differences andsimilarities of neural information transmission under different coupling strengths, effects of different types of synapses namely inhibitive and excitatory chemical synapses on information transmission and influences of joint action of the two types of chemical synapses on information transmission can be observed.

Description

technical field [0001] The invention belongs to the technical field of biomedical engineering and relates to an experimental platform for imitating electronic synapse, in particular to an experimental platform for electronic synapse based on FPGA. Background technique [0002] In 1894, the famous British physiologist Charles Sherrington first proposed the concept of "synapse". In the biological nervous system, a large number of neurons are interconnected by synapses to form a neural network. The key role of synapses is to process and transmit information between neurons. Professor Feng Depei, a famous Chinese physiologist, explained the role of synapses, that is, "in the entire neurobiology, synapses and related research can be said to occupy a central position. Because the nervous system is basically an information processing system, and information Processing requires neuron-to-neuron dialogue, which occurs through synapses." Scholars have explored the process of electr...

AI Technical Summary

Problems solved by technology

[0005] The existing technology is still in the basic stage, so there are still the following shortcomings: 1) There is no FPGA-based dedicated electronic synapse experimental platform; 2) The electronic synaptic experimental platform that can replace animal experiments on biological synaptic connections has not been used in practice middle

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