Interareal directed interactions and their modulation by selective attention assessed with high density electrocorticography in monkey

Abstract

Event Abstract Back to Event Interareal directed interactions and their modulation by selective attention assessed with high density electrocorticography in monkey Andre Bastos1, 2*, Pascal Fries2, 3, Robert Oostenveld2, Jan-Mathijs Schoffelen2 and Conrado A. Bosman2 1 University of California at Davis, United States 2 Donders Institute, Radboud University Nijmegen, Netherlands 3 Ernst Strüngmann Institute in Cooperation with Max Planck Society, Germany Behaviorally relevant stimuli are processed in visual cortex at the expense of irrelevant ones. The selection of relevant stimuli and the allocation of selective attention require parietal and frontal regions. Yet, it is not fully understood how these areas convey their selection to visual areas. The selection needs to flexibly implement appropriate patterns of interactions in visual cortex. Such flexible interactions might be subserved by flexible patterns of neuronal synchronization. To test this possibility, we trained two monkeys to perform a selective attention task. During fixation, two gratings were presented in the two hemifields. On a given trial, one of them was the behaviorally relevant target. We recorded local field potentials with a subdural electrocorticography (ECoG) grid that contained 252 electrodes, spaced at 2-3 mm, covering large expanses of the left hemisphere from V1 through V4, parietal and central cortex up to frontal eye field (FEF). Coherence and Granger Causality analyses revealed networks with spatially and spectrally distinct synchronization patterns. Areas V1 and V4 were synchronized in the gamma-frequency band (50-90 Hz) and this interaction was almost unidirectional from V1 to V4. Attention to a contralateral stimulus enhanced this feedforward gamma-band influence. Parietal cortex was synchronized with both V4 and with FEF in the beta frequency band. Between parietal cortex and V4, this interaction was predominantly from parietal to V4. For many V4-parietal electrode pairs, selective attention modulated and often enhanced the interaction. We propose that these two spatially and spectrally segregated networks interact to coordinate executive signals from the parietal and prefrontal cortices with perceptual processing in visual cortex Keywords: electrocorticography, neuronal oscillations Conference: XI International Conference on Cognitive Neuroscience (ICON XI), Palma, Mallorca, Spain, 25 Sep - 29 Sep, 2011. Presentation Type: Symposium: Oral Presentation Topic: Symposium 3: The role of neuronal oscillations in computation and communication in multi-scale brain networks Citation: Bastos A, Fries P, Oostenveld R, Schoffelen J and Bosman CA (2011). Interareal directed interactions and their modulation by selective attention assessed with high density electrocorticography in monkey. Conference Abstract: XI International Conference on Cognitive Neuroscience (ICON XI). doi: 10.3389/conf.fnhum.2011.207.00023 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: 09 Nov 2011; Published Online: 15 Nov 2011. * Correspondence: Dr. Andre Bastos, University of California at Davis, Davis, United States, andrembastos@gmail.com 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 Andre Bastos Pascal Fries Robert Oostenveld Jan-Mathijs Schoffelen Conrado A Bosman Google Andre Bastos Pascal Fries Robert Oostenveld Jan-Mathijs Schoffelen Conrado A Bosman Google Scholar Andre Bastos Pascal Fries Robert Oostenveld Jan-Mathijs Schoffelen Conrado A Bosman PubMed Andre Bastos Pascal Fries Robert Oostenveld Jan-Mathijs Schoffelen Conrado A Bosman 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.