Synchrony and delay activity in cortical column models

Recent studies have shown that neurons in the visual cortex responding to related features tend to synchronize their activity. Although synchronous oscillations have been observed in associational cortices during visual working memory activity, there has been few modeling attempts to address the process which could simultaneously generate both types of dynamics. We propose a realistic mechanism that accounts for delay activity and synchronous oscillations within and between cortical column models, in a range that is consistent with experimental data. These dynamics result from the interplay between intrinsic cellular bistability and synaptic interactions. ( 1999 Elsevier Science B.V., All rights reserved.