Design of Cortical Neuron Circuits With VLSI Design Approach

A simple CMOS circuitry using very less number of MOSFETs reproduce most of the electrophysiologicalcortical neuron types and is capable of producing a variety of different behaviors with diversity similar tothat of real biological neuron cell. The firing pattern of basic cell classes like regular spiking (RS),chattering (CH), intrinsic bursting (IB) and fast spiking(FS) are obtained with a simple adjustment of onlyone biasing voltage makes circuit suitable for applications in reconfigurable neuromorphic devices thatimplement biologically resemble circuit of cortex. This paper discusses spice simulation of the variousspiking pattern ability with required and firing frequency of a given cell type. The circuit operation isverified for both conditions-constant input and pulsating input.