Nonlinear Dynamics in Semiconductor Lasers - Abstract

Yanchuk, Serhiy

Delay reduction in networks and its application example: pattern reverberation

In this presentation I shortly review the delay-reduction technique in networks of dynamical systems. Further, I show an example how this technique can be used for constructing delay-coupled networks of excitable elements with prescribed properties. If the delays are tuned appropriately, the network can either stay in the steady resting state or, alternatively, exhibit a desired spiking pattern. It is shown that such a network can be used as a pattern-recognition system. An application of the correct pattern as an external input to the network leads to a self-sustained reverberation of the encoded pattern. As excitable elements, we employ simplistic coincidence detector models as well as Hodgkin-Huxley neuron models. Moreover, the system is implemented experimentally on a Field-Programmable Gate Array (FPGA).