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. 2010 Dec 8;4:202. doi: 10.3389/fnins.2010.00202

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Copyright © 2010 Tamamaki and Tomioka.

This is an open-access article subject to an exclusive license agreement between the authors and the Frontiers Research Foundation, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited.

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Synchrony of gamma-oscillation in cat visual cortices. Callosal connections mediate long-distance synchronization. In the bottom panels are cross-correlograms between responses from different recording sites in the left hemisphere (LH) and right hemisphere (RH) that indicate the degree of interhemispheric synchronization. When the corpus callosum was intact (left-hand panel), strong interhemispheric synchronization occurred with no phase lag between the LH and RH recording sites. Sectioning of the corpus callosum (right-hand panel) abolished interhemispheric synchronization while leaving synchronization within hemispheres intact. Adapted from Uhlhaas and Singer (2010).