Expectations about upcoming tactile events selectively modulate beta-band oscillations in human primary somatosensory cortex

Abstract

Event Abstract Back to Event Expectations about upcoming tactile events selectively modulate beta-band oscillations in human primary somatosensory cortex Freek V. Ede1*, Ole Jensen1 and Eric Maris1 1 Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, Netherlands Neuronal oscillations are postulated to play a fundamental role in top-down processes of expectation. We used magnetoencephalogaphy (MEG) to investigate whether expectation of a tactile event involves a pre-stimulus modulation of neuronal oscillations in human somatosensory cortex. In a bimodal attention paradigm, participants were presented with a predictable spatio-temporal pattern of tactile stimulations and simultaneously occurring non-lateralized auditory stimuli. By investigating lateralized patterns of oscillatory activity, we studied both attentive and non-attentive tactile expectation. For both, we observe a lateralized modulation of oscillatory activity in the beta-band prior to a predictable – and accordingly lateralized – tactile stimulus. Topography and lateralization imply an origin in primary somatosensory cortex (S1). We propose that beta – a dominant rhythm in S1 – drives neuronal excitability in an a-specific manner such that perceptual processing requires suppression of it. Expectation-induced suppression of beta then prepares the system for processing, leading the active process of perception to start even prior to sensation. Conference: Biomag 2010 - 17th International Conference on Biomagnetism , Dubrovnik, Croatia, 28 Mar - 1 Apr, 2010. Presentation Type: Poster Presentation Topic: Neurocognition and Functional Connectivity Citation: Ede FV, Jensen O and Maris E (2010). Expectations about upcoming tactile events selectively modulate beta-band oscillations in human primary somatosensory cortex. Front. Neurosci. Conference Abstract: Biomag 2010 - 17th International Conference on Biomagnetism . doi: 10.3389/conf.fnins.2010.06.00333 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 06 Apr 2010; Published Online: 06 Apr 2010. * Correspondence: Freek V Ede, Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, Netherlands, f.vanede@donders.ru.nl Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Freek V Ede Ole Jensen Eric Maris Google Freek V Ede Ole Jensen Eric Maris Google Scholar Freek V Ede Ole Jensen Eric Maris PubMed Freek V Ede Ole Jensen Eric Maris Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.