Slide 7

Interhemispheric Synchronisation

Synchronized oscillations can occur between homologous points on the two hemispheres.
Simultaneous extracellular recordings from the two hemispheres reveals that activity may be synchronized between these two brain regions. Sectioning of the corpus callosum resulted in abolition of this synchronized activity, indicating that cortico-cortical connections are important for its generation. D is the autocorrelagrams of activity in the left and right hemispheres, while E is the cross-correlagram between the two hemispheres demonstrating the synchronized activity.
From Engel, A.K., Konig, P., Kreiter, A.K., and Singer, W. (1991) Interhemispheric synchronization of oscillatory neuronal responses in cat visual cortex. Science 252: 1177-1179.