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  • Title: Synchronization of oscillatory neuronal responses between striate and extrastriate visual cortical areas of the cat.
    Author: Engel AK, Kreiter AK, König P, Singer W.
    Journal: Proc Natl Acad Sci U S A; 1991 Jul 15; 88(14):6048-52. PubMed ID: 2068083.
    Abstract:
    Recent studies have shown that neurons in area 17 of cat visual cortex display oscillatory responses which can synchronize across spatially separate orientation columns. Here, we demonstrate that unit responses recorded from the posteromedial lateral suprasylvian area, a visual association area specialized for the analysis of motion, also exhibit an oscillatory temporal structure. Cross-correlation analysis of unit responses reveals that cells in area 17 and the posteromedial lateral suprasylvian area can oscillate synchronously. Moreover, we find that the interareal synchronization is sensitive to features of the visual stimuli, such as spatial continuity and coherence of motion. These results support the hypothesis that synchronous neuronal oscillations may serve to establish relationships between features processed in different areas of visual cortex.
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