Rangan: The line motion illusion in a cortical network model
Apr
21
Mon 4:00 PM
When Monday, April 21, 2008
Time
4:00 PM - 5:00 PM
Where Tech M416
Contact Danielle Jackson
847-491-5586
Group McCormick-Colloquia Engineering Sciences and Applied Mathematics
Applied Math Colloquium
Title: The line motion illusion in a cortical network model
Speaker: Aaditya Rangan, New York University
Abstract: A common visual illusion is the 'line-motion-illusion': a quickly flashed nonmoving square followed by a long, nonmoving bar giving rise to the visual sensation that the bar is growing outward from the square. Experiments by Grinvald et al. suggest that the primary visual cortex (V1) is actually 'fooled' by this illusion -- the cortex responds as if a growing bar were presented. Using a large-scale (~105-6 neuron)computational model of V1, I will explain possible network mechanisms underlying this phenomenon. I will also discuss a few of the computational issues that arise within a model of this size.
Title: The line motion illusion in a cortical network model
Speaker: Aaditya Rangan, New York University
Abstract: A common visual illusion is the 'line-motion-illusion': a quickly flashed nonmoving square followed by a long, nonmoving bar giving rise to the visual sensation that the bar is growing outward from the square. Experiments by Grinvald et al. suggest that the primary visual cortex (V1) is actually 'fooled' by this illusion -- the cortex responds as if a growing bar were presented. Using a large-scale (~105-6 neuron)computational model of V1, I will explain possible network mechanisms underlying this phenomenon. I will also discuss a few of the computational issues that arise within a model of this size.
