Event Type:

Mathematical Biology Seminar

Date/Time:

Wednesday, October 5, 2016 - 16:00 to 17:00

Location:

GILK 115

Abstract:

We study the spatial propagating dynamics in a neural network of excitatory and inhibitory populations. Our study demonstrates the existence and nonexistence of traveling pulse solutions with a nonsaturating piecewise linear gain function. We prove that traveling pulse solutions do not exist for such neural field models with even(symmetric) couplings. The neural field models only support traveling pulse solutions with asymmetric couplings. We also show that such neural field models with asymmetric couplings will lead to a system of delay differential equations. We further compute 1-bump traveling pulse solutions using the system of delay differential equations. Finally, we develop Evans functions to assess the stability of 1-bump traveling pulse solutions. This is a joint work with Dr. Yixin Guo at Drexel University.