Population dynamics in primary visual cortex
Tuesday 28th of February 2006 at 05:00pm
I will discuss ongoing work on the question of how population of
cortical neurons represent a circular variable (in this case, the
orientation of a visual stimulus), and how this representation evolves
over the time-course of the response. Mathematically, the problem is
effectively the study of how the unit circle gets mapped to a
high-dimensional space representing the instantaneous firing rate of the
population. I will first present some theoretical results based on a
simple model, including a curious property about the 'sharpening' of
population codes, and a contraint on the 'information tuning curve'
recently introduced by Kang and Sompolinsky. Then, I will share recent
experimental results obtained by the simultaneous recording across a
population of cortical cells using micromachined 10x10 electrode arrays.
Join Email List
You can subscribe to our weekly seminar email list by sending an email to
firstname.lastname@example.org that contains the words
subscribe redwood in the body of the message.
(Note: The subject line can be arbitrary and will be ignored)