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Theta, but Not Gamma Oscillations in Area V4 Depend on Input from Primary Visual Cortex.
Kienitz, Ricardo; Cox, Michele A; Dougherty, Kacie; Saunders, Richard C; Schmiedt, Joscha T; Leopold, David A; Maier, Alexander; Schmid, Michael C.
Afiliación
  • Kienitz R; Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Deutschordenstraße 46, 60528 Frankfurt am Main, Germany; Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK; Epilepsy Center Frankfurt Rhine-Main, Center o
  • Cox MA; Department of Psychology, Vanderbilt University, 111 21(st) Avenue South, 301 Wilson Hall, Nashville, TN 37240, USA; Center for Visual Science, University of Rochester, Meliora Hall, Rochester, NY 14627, USA.
  • Dougherty K; Department of Psychology, Vanderbilt University, 111 21(st) Avenue South, 301 Wilson Hall, Nashville, TN 37240, USA; Princeton Neuroscience Institute, Princeton University, Washington Road, Princeton, NJ 08544, USA.
  • Saunders RC; Laboratory of Neuropsychology, NIMH, Convent Drive 49, Bethesda, MD 20892, USA.
  • Schmiedt JT; Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Deutschordenstraße 46, 60528 Frankfurt am Main, Germany.
  • Leopold DA; Laboratory of Neuropsychology, NIMH, Convent Drive 49, Bethesda, MD 20892, USA; Neurophysiology Imaging Facility, NIMH, NINDS and NEI, 49 Convent Drive, Bethesda, MD 20892, USA.
  • Maier A; Department of Psychology, Vanderbilt University, 111 21(st) Avenue South, 301 Wilson Hall, Nashville, TN 37240, USA.
  • Schmid MC; Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK; Department of Neuroscience and Movement Science, Faculty of Science and Medicine, University of Fribourg, Chemin du Musée 5, 1700 Fribourg, Switzerland. Electronic address: michael.schmid@unifr
Curr Biol ; 31(3): 635-642.e3, 2021 02 08.
Article en En | MEDLINE | ID: mdl-33278356
Theta (3-9 Hz) and gamma (30-100 Hz) oscillations have been observed at different levels along the hierarchy of cortical areas and across a wide set of cognitive tasks. In the visual system, the emergence of both rhythms in primary visual cortex (V1) and mid-level cortical areas V4 has been linked with variations in perceptual reaction times.1-5 Based on analytical methods to infer causality in neural activation patterns, it was concluded that gamma and theta oscillations might both reflect feedforward sensory processing from V1 to V4.6-10 Here, we report on experiments in macaque monkeys in which we experimentally assessed the presence of both oscillations in the neural activity recorded from multi-electrode arrays in V1 and V4 before and after a permanent V1 lesion. With intact cortex, theta and gamma oscillations could be reliably elicited in V1 and V4 when monkeys viewed a visual contour illusion and showed phase-to-amplitude coupling. Laminar analysis in V1 revealed that both theta and gamma oscillations occurred primarily in the supragranular layers, the cortical output compartment of V1. However, there was a clear dissociation between the two rhythms in V4 that became apparent when the major feedforward input to V4 was removed by lesioning V1: although V1 lesioning eliminated V4 theta, it had little effect on V4 gamma power except for delaying its emergence by >100 ms. These findings suggest that theta is more tightly associated with feedforward processing than gamma and pose limits on the proposed role of gamma as a feedforward mechanism.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Corteza Visual Primaria Límite: Animals Idioma: En Revista: Curr Biol Asunto de la revista: BIOLOGIA Año: 2021 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Corteza Visual Primaria Límite: Animals Idioma: En Revista: Curr Biol Asunto de la revista: BIOLOGIA Año: 2021 Tipo del documento: Article Pais de publicación: Reino Unido