Stochastic Synchronization and Array-Enhanced Coherence Resonance in a Bio-inspired Chemical Sensor Array

Kazuki Nakada, Jun Igarashi, Tetsuya Asai, Katsumi Tateno, Hatsuo Hayashi, Yoshitaka Ohtubo, Tsutomu Miki, Kiyonori Yoshii

Abstract: The purpose of our project is to establish how to design brain-inspired chemical sensor arrays from physiological, theoretical, and engineering points of view. In a previous work, a computational model for chemical sensor arrays has been proposed inspired from physiological properties of mouse taste bud cells. The computational model consists of three functional parts: the chemical sensor, the random pulse generator, and the stochastic synchronizer. The model converts the concentration of chemical substances into the degree of stochastic synchronization. We have implemented the chemical sensor array as a silicon devices. We discuss about functional significance of our device in view of noise-induced nonlinear phenomena: stochastic synchronization and array-enhanced coherence resonance.