Multiple Transient Signals in Human Visual Cortex Associated with an Elementary Decision

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Thomas MeindertsmaTobias H Donner

Abstract

The cerebral cortex continuously undergoes changes in its state, which are manifested in transient modulations of the cortical power spectrum. Cortical state changes also occur at full wakefulness and during rapid cognitive acts, such as perceptual decisions. Previous studies found a global modulation of beta-band (12-30 Hz) activity in human and monkey visual cortex during an elementary visual decision: reporting the appearance or disappearance of salient visual targets surrounded by a distractor. The previous studies disentangled neither the motor action associated with behavioral report nor other secondary processes, such as arousal, from perceptual decision processing per se. Here, we used magnetoencephalography in humans to pinpoint the factors underlying the beta-band modulation. We found that disappearances of a salient target were associated with beta-band suppression, and target reappearances with beta-band enhancement. This was true for both overt behavioral reports (immediate button presses) and silent counting of the perceptual events. This finding indicates that the beta-band modulation was unrelated to the execution of the motor act associated with a behavioral report of the perceptual decision. Further, changes i...Continue Reading

Citations

Feb 7, 2019·ELife·Niels A KloostermanJohannes Jacobus Fahrenfort
Feb 8, 2019·The Neuroscientist : a Review Journal Bringing Neurobiology, Neurology and Psychiatry·Yuranny Cabral-Calderin, Melanie Wilke
Feb 2, 2019·Frontiers in Integrative Neuroscience·Charidimos TzagarakisGiuseppe Pellizzer
Oct 28, 2019·Frontiers in Human Neuroscience·R L van den BrinkT H Donner
Sep 5, 2018·Scientific Reports·Christoph StrauchAnke Huckauf
Feb 18, 2021·Neuron·Leonhard WaschkeDouglas D Garrett
Jun 24, 2021·Scientific Reports·Eva PolandMelanie Wilke

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