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Revealing α oscillatory activity using voltage-sensitive dye imaging in monkey V1

Résumé : The relevance of α oscillations (7-12Hz) in neural processing, although recognized long ago, remains a major research question in the field. While intensively studied in humans, α oscillations appear much less often investigated (and observed) in monkeys. Here we wish to provide data from non-human primates on stimulus-related α rhythm. Indeed, in humans, EEG α is enhanced in response to non-periodic dynamic visual stimulation (“perceptual echoes” or to a static stimulus (“flickering wheel illusion”). Do the same visual patterns induce an oscillatory response in monkey V1? We record voltage-sensitive dye signals from three anesthetized monkeys to investigate the population-based oscillatory neural response that is not resulting from attention-related feedback signals. We revealed α oscillations in monkey V1 which, when they occur, react in a manner comparable to human studies.
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Preprints, Working Papers, ...
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https://hal-amu.archives-ouvertes.fr/hal-03017087
Contributor : Frederic Chavane <>
Submitted on : Friday, November 20, 2020 - 4:58:08 PM
Last modification on : Saturday, November 21, 2020 - 3:22:16 AM

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Sandrine Chemla, Sébastien Roux, Alexandre Reynaud, Frédéric Chavane, Rufin Vanrullen. Revealing α oscillatory activity using voltage-sensitive dye imaging in monkey V1. 2020. ⟨hal-03017087⟩

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