060607 Kisvarday
The Bernstein Center for Computational Neuroscience Freiburg Announcement for the next
BCCN Seminar
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Zoltán F. Kisvárday, PhD, DSc
Laboratory for Cortical Systems Neuroscience
Department of Anatomy, Histology & Embryology University of Debrecen Hungary Model-based analysis of long-range excitatory connections in the visual cortex | |
Wednesday, June 07th, 2006 18:15h |
Lecture Hall (ground floor) BCCN building Hansastraße 9A 79104 Freiburg |
Abstract: Long-range lateral connections within the primary visual cortex have been assumed to represent the first stage of integrating discrete iso-oriented line segments within the visual field utilising the Gestalt principles such as similarity and closeness. Here, we studied the potential of the iso-orientation connectivity rule to predict the distribution of excitatory neurones in relation to orientation preference and cortical location. Using a compound Gaussian-based model we were able to describe the patterns of large populations of excitatory neurones. However, individual neurones often showed significant deviations from the population model. These results suggest that long-range excitatory cells (i) are engaged with functional representations in addition to orientation and position and (ii) involved in more complex feature-integration processes than that indicated by the population data.
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Host: Dr. Clemens Boucsein |
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The talk is open to the public. Guests are cordially invited!
www.bccn.uni-freiburg.de |