Event Abstract Back to Event Early and late retrieval processes: a MEG study of neural dynamics related to inter-temporal context effects Roni Tibon1*, Eli Vakil1, Daniel Levy2 and Avi Goldstein1 1 Bar Ilan University, Spain 2 The Interdisciplinary Center Herzliya, Israel Context effects (CEs) on recognition memory provide important insights into associative memory processes. Associations yielding CEs are not limited to items that are processed simultaneously, but can also occur when items are processed sequentially. We conducted a MEG study of memory for pairs of items encoded and retrieved sequentially, to identify the dynamics of neural activity associated with retrieval of inter-temporal associations. Participants studied pairs of successive objects pictures, one encoded as a target for remembering , and the other encoded as a context of this target. They were subsequently asked to make old-new judgments for each pair member, while neural activation was recorded using whole head MEG. We contrasted trials of originally studied pairs ("Repeat" condition), with trials containing target pictures accompanied by different studied context ("Re-pair" condition). Early-onset (~200-~300), as well as late-onset (~700-~800) Event-related magnetic fields were modulated by inter-temporal associations, revealing alternation of activation in the “Repeat” compared to the “Re-pair” condition. Source estimation of the early-onset differences using Beamforming technique revealed the source of these differences to be in left parietal and frontal regions. These findings may point to an early involvement of these areas in retrieval processes, such as orientation of attention to retrieval . Source estimation of the later differences is expected to reveal activation patterns that may be attributed to post-retrieval, or other late-onset processes. Keywords: MEG, memory and learning 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 Memory and Learning Citation: Tibon R, Vakil E, Levy D and Goldstein A (2011). Early and late retrieval processes: a MEG study of neural dynamics related to inter-temporal context effects. Conference Abstract: XI International Conference on Cognitive Neuroscience (ICON XI). doi: 10.3389/conf.fnhum.2011.207.00215 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: 21 Nov 2011; Published Online: 28 Nov 2011. * Correspondence: Dr. Roni Tibon, Bar Ilan University, Tel Aviv, Spain, ronitibon@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 Roni Tibon Eli Vakil Daniel Levy Avi Goldstein Google Roni Tibon Eli Vakil Daniel Levy Avi Goldstein Google Scholar Roni Tibon Eli Vakil Daniel Levy Avi Goldstein PubMed Roni Tibon Eli Vakil Daniel Levy Avi Goldstein 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.