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Lai-Sang Young - NYU

Wednesday, March 17, 10:45AM

“A dynamical model of the visual cortex”

Abstract: In the past several years, I have been involved in building a  biologically realistic model of the monkey visual cortex. Work on the input layer of the primary visual cortex (V1) is now nearly complete, and I would like to share some of that with you. The model is a large structured network of smaller dynamical systems representing the dynamics of individual neurons. I plan to divide my time between the following two topics: (1) Local circuits, the dynamics of which I will describe in some detail, including an emergent rhythm detected all over the brain. (2) Dynamics across the cortical surface in an input layer of V1. I will discuss nonequilibrium steady states that arise when the visual cortex is stimulated by steady inputs, and how one might try to understand responses to nonstationary stimuli -- here as in dynamical systems in general -- proposing a picture that extends the idea of SRB measures.