A simple variant of Integrate-and-Fire model of neuron for application in neuronal area

Though the Hodgkin-Huxley (H-H) type models can reproduce electrophysiological measurements to a high degree of accuracy, its intrinsic complexity restricts its use in describing neural network dynamics. For this reason, many phenomenological spiking neuron models such as Integrate-and-Fire (I&F) models have been developed in the past to discuss aspects of neural coding, memory, or network dynamics. Due to replacement of the rich dynamics of H-H type models, I&F models can not correctly reproduce the neuronal dynamics close to the firing threshold. What is essential for a neuron to correctly reproduce the neural dynamics that it has to spend a significant amount of time far away from the firing threshold. We here discuss the development of a simple variant of Integrate-and-Fire model that can approximately reproduce the voltage dynamics of neuron analogous to H-H model. The model is simulated in ORCAD and results are compared both with H-H type and I&F models. It is seen that this I&F model can reproduce the neural dynamics as close as to H-H type models.