Max Planck Institute for Dynamics and Self-Organization -- Department for Nonlinear Dynamics and Network Dynamics Group
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BCCN/BFNT AG-Seminar

Tuesday, 06.12.2011 17 c.t.

A Closer Look at Receptive Fields: How Neurons in the Retina Integrate Visual Signals

by Prof. Dr. Tim Gollisch
from University of Goettingen, Dept. of Ophthalmology, Göttingen

Contact person: Fred Wolf

Location

Ludwig Prandtl lecture hall

Abstract

A Closer Look at Receptive Fields: How Neurons in the Retina Integrate Visual Signals The vertebrate retina encodes incoming visual stimuli into spike patterns of its output neurons, the retinal ganglion cells. Signal processing by ganglion cells is traditionally characterized through the cells' receptive fields, which exhibit the well-known center-surround structure. Often, however, it is the nonlinear substructure within the receptive fields that gives certain ganglion cells their specific functions. In this talk, I will therefore present some new tools and ideas for studying the substructure of receptive fields. We have used online analysis and closed-loop experiments to study how ganglion cells combined inputs from different parts of their receptive fields. And we have used a new stimulus design to study whether certain types of adaptation are local or global properties of the receptive fields.

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