Modeling the spatiotemporal cortical activity associated with the line-motion illusion in primary visual cortex.

ABSTRACT: Our large-scale computational model of the primary visual cortex that incorporates orientation-specific, long-range couplings with slow NMDA conductances operates in a fluctuating dynamic state of intermittent desuppression (IDS), which captures the behavior of coherent spontaneous cortical activity, as revealed by in vivo optical imaging based on voltage-sensitive dyes. Here, we address the functional significance of the IDS cortical operating points by investigating our model cortex response to the Hikosaka line-motion illusion (LMI) stimulus-a cue of a quickly flashed stationary square followed a few milliseconds later by a stationary bar. As revealed by voltage-sensitive dye imaging, there is an intriguing similarity between the cortical spatiotemporal activity in response to (i) the H

SUBMITTER: Rangan AV 

PROVIDER: S-EPMC1323193 | biostudies-literature | 2005 Dec

REPOSITORIES: biostudies-literature