A conductance-based silicon neuron with membrane-voltage dependent temporal dynamics

This paper presents an analog neuromimetic ASIC that integrates Hodgkin-Huxley (HH) model formalism, including the membrane voltage dependency of temporal dynamics. This circuit computes in real-time and in analog continuous mode the electrical activity of a neural cell. We have developed a library of sub-circuits calculating the elementary mathematical functions encountered in the HH models. Those sub-circuits are organized to form the model set of equations. W e will detail the blocks dedicated to the temporal dynamics and present measurement performed on the chip.