Neuromorphic phonotaxis

Resposible person: Harshawardhan Ramachandran
This work is carried out in collaboration with: Prof. Martin Nawrot, Computational Systems Neuroscience, Universität zu Köln, Germany.

Insects with small brains exhibiting complex behaviour allow us to explore the computations involved in their brains. The aim of this project is to investigate the auditory pattern recognition of cricket phonotaxis. Phonotaxis is the response of female crickets to their male counterpart calling songs. From the neurophysiological experiments, three main classes of neurons in the cricket brain involved in auditory processing of chirps during phonotaxis have been found. In this project such a network is studied and modelled using spiking neural networks and also implemented in the neuromorphic hardware. Short term plasticity (STP) plays a keyrole in this model and new neuromorphic circuits are designed to implement the STP. The goal of this project will be to study and model the neural mechanisms underlying phonotaxis and analyse the role of neuromorphic hardware in replicating the behavioural data. One of the cool applications with such a simple but efficient network would be sound localization among robots.

Schematic view of the phonotaxis project. From crickets to robotic application

Key Publications:

Thomas Rost, Harshawardhan Ramachandran, Martin Paul Nawrot, Elisabetta Chicca, "A neuromorphic approach to auditory pattern recognition in cricket phonotaxis", Conference Proceeding on Circuit Theory and Design (ECCTD), European Conference 2013, Dresden.

Harshawardhan Ramachandran, Stefan Weber, Syed Ahmed Aamir and Elisabetta Chicca, "Neuromorphic Circuits for Short-Term Plasticity with Recovery Control", IEEE International Symposium on Circuits and Systems (ISCAS), 2014, Melbourne.