Sentence reading is supported by a large-scale network of correlated gamma-band fluctuations

Abstract

Event Abstract Back to Event Sentence reading is supported by a large-scale network of correlated gamma-band fluctuations Jean-Philippe Lachaux1*, Juan Vidal1, Samson Freyermuth2, Karim Jerbi1, Alain Berthoz2 and Philippe Kahane1 1 INSERM, France 2 CNRS, France Several hundreds of neuroimaging studies have led to a growing consensus regarding the brain regions supporting reading, mostly located in the left inferior frontal, parietal and temporal lobes. Despite general agreement that those regions interact and form a network - the reading network – direct support for this claim is still lacking. While fMRI can be used to reveal correlations between regional metabolic demands, neural interactions can only be revealed with direct measures of neural activity. We obtained intracerebral neural recordings in twelve patients performing a simple sentence reading task contrasting semantic, phonological and purely visual processes. We recorded from most regions supporting reading and found that the reading network is, indeed, a network, supported by correlated amplitude fluctuations in the gamma-band (40 to 150 Hz). The task-sensitivity of this marker was sufficient to reveal the functional organization of the reading network, even in single trials and in real-time. In addition, single-subject analysis revealed clear-cut functional dissociations within the ventral occipitotemporal cortex and the inferior frontal cortex over distances less than five millimeters, beyond the resolution of neuroimaging group studies. Funding: This work was supported by a grant from the EC - Fp7 - Brainsync. Keywords: gamma band, Language Conference: XI International Conference on Cognitive Neuroscience (ICON XI), Palma, Mallorca, Spain, 25 Sep - 29 Sep, 2011. Presentation Type: Poster Presentation Topic: Poster Sessions: Neural Bases of Language Citation: Lachaux J, Vidal J, Freyermuth S, Jerbi K, Berthoz A and Kahane P (2011). Sentence reading is supported by a large-scale network of correlated gamma-band fluctuations. Conference Abstract: XI International Conference on Cognitive Neuroscience (ICON XI). doi: 10.3389/conf.fnhum.2011.207.00180 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: 18 Nov 2011; Published Online: 28 Nov 2011. * Correspondence: Dr. Jean-Philippe Lachaux, INSERM, Lyon, France, jp.lachaux@inserm.fr 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 Jean-Philippe Lachaux Juan Vidal Samson Freyermuth Karim Jerbi Alain Berthoz Philippe Kahane Google Jean-Philippe Lachaux Juan Vidal Samson Freyermuth Karim Jerbi Alain Berthoz Philippe Kahane Google Scholar Jean-Philippe Lachaux Juan Vidal Samson Freyermuth Karim Jerbi Alain Berthoz Philippe Kahane PubMed Jean-Philippe Lachaux Juan Vidal Samson Freyermuth Karim Jerbi Alain Berthoz Philippe Kahane 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.