دورية أكاديمية
Stimulus-induced gamma power predicts the amplitude of the subsequent visual evoked response.
| العنوان: | Stimulus-induced gamma power predicts the amplitude of the subsequent visual evoked response. |
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| المؤلفون: | van Es MWJ; Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Kapittelweg 29, 6525 EN, Nijmegen, Netherlands. Electronic address: m.vanes@donders.ru.nl., Schoffelen JM; Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Kapittelweg 29, 6525 EN, Nijmegen, Netherlands. |
| المصدر: | NeuroImage [Neuroimage] 2019 Feb 01; Vol. 186, pp. 703-712. Date of Electronic Publication: 2018 Nov 20. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Academic Press Country of Publication: United States NLM ID: 9215515 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1095-9572 (Electronic) Linking ISSN: 10538119 NLM ISO Abbreviation: Neuroimage Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Orlando, FL : Academic Press, c1992- |
| مواضيع طبية MeSH: | Cortical Synchronization/*physiology , Evoked Potentials, Visual/*physiology , Functional Neuroimaging/*methods , Gamma Rhythm/*physiology , Magnetoencephalography/*methods , Psychomotor Performance/*physiology , Visual Cortex/*physiology , Visual Perception/*physiology, Adolescent ; Adult ; Female ; Humans ; Male ; Middle Aged ; Young Adult |
| مستخلص: | The efficiency of neuronal information transfer in activated brain networks may affect behavioral performance. Gamma-band synchronization has been proposed to be a mechanism that facilitates neuronal processing of behaviorally relevant stimuli. In line with this, it has been shown that strong gamma-band activity in visual cortical areas leads to faster responses to a visual go cue. We investigated whether there are directly observable consequences of trial-by-trial fluctuations in non-invasively observed gamma-band activity on the neuronal response. Specifically, we hypothesized that the amplitude of the visual evoked response to a go cue can be predicted by gamma power in the visual system, in the window preceding the evoked response. Thirty-three human subjects (22 female) performed a visual speeded response task while their magnetoencephalogram (MEG) was recorded. The participants had to respond to a pattern reversal of a concentric moving grating. We estimated single trial stimulus-induced visual cortical gamma power, and correlated this with the estimated single trial amplitude of the most prominent event-related field (ERF) peak within the first 100 ms after the pattern reversal. In parieto-occipital cortical areas, the amplitude of the ERF correlated positively with gamma power, and correlated negatively with reaction times. No effects were observed for the alpha and beta frequency bands, despite clear stimulus onset induced modulation at those frequencies. These results support a mechanistic model, in which gamma-band synchronization enhances the neuronal gain to relevant visual input, thus leading to more efficient downstream processing and to faster responses. (Copyright © 2018 The Authors. Published by Elsevier Inc. All rights reserved.) |
| فهرسة مساهمة: | Keywords: Evoked activity; Gamma; MEG; Oscillation; Synchronization; Visual cortex |
| تواريخ الأحداث: | Date Created: 20181124 Date Completed: 20190705 Latest Revision: 20190705 |
| رمز التحديث: | 20240628 |
| DOI: | 10.1016/j.neuroimage.2018.11.029 |
| PMID: | 30468771 |
| قاعدة البيانات: | MEDLINE |
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Full Text Finder | تدمد: | 1095-9572 |
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| DOI: | 10.1016/j.neuroimage.2018.11.029 |