Chapter

Spatiotemporal Dynamics of Synchronous Activity across Multiple Areas of the Visual Cortex in the Alert Monkey

Charles M. Gray and Baldwin Goodell

in The Dynamic Brain

Published in print January 2011 | ISBN: 9780195393798
Published online September 2011 | e-ISBN: 9780199897049 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780195393798.003.0011
Spatiotemporal Dynamics of Synchronous Activity across Multiple Areas of the Visual Cortex in the Alert Monkey

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It is well established that perceptual and cognitive processes involve the coordinated activity of large populations of neurons distributed over multiple cortical regions. However, we remain surprisingly ignorant of the spatio-temporal organization of these processes, their underlying neuronal mechanisms, and their relation to behavior. This gap in understanding stems largely from the complex and non-stationary nature of distributed cortical activity and from technical limitations in our ability to make appropriate electrophysiological measurements. Here, the chapter presents new experimental findings, from large scale multi-electrode recordings in the visual cortex of a macaque monkey while the animal viewed a time-varying natural scene. The results reveal highly dynamic patterns of synchronous activity that rapidly change their spatial organization as a function of time, stimulus and oculomotor behavior.

Keywords: cortex; networks; dynamics; synchronization; monkey; visual perception

Chapter.  7273 words.  Illustrated.

Subjects: Neuroscience

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