Effects of retention interval on the electrophysiological correlates of recognition memory

Abstract

Event Abstract Back to Event Effects of retention interval on the electrophysiological correlates of recognition memory Jenna Roberts1*, Dimitris Tsivilis1 and Andrew Mayes1 1 The University of Manchester, United Kingdom Previous research with event related potentials (ERPs) has linked recollection based recognition with a late onsetting parietal component known also as the late positive complex (LPC). In contrast familiarity (strength) based recognition has been associated with an earlier mid frontal effect (the FN400). However, very few studies have examined the ERP correlates of recognition after retention intervals of more than just minutes. This is despite widespread agreement that the neural representation of memories changes over time due to ongoing consolidation processes. In the present study, participants completed a Remember / Know recognition memory test for photographs studied either 1 week (remote memory) or 15 minutes (recent memory) earlier. The Remember / Know task is commonly used to differentiate familiarity and recollection based memories. While recent and remote Remember responses did not modulate the FN400, the LPC was reduced in amplitude for the remote memories. We propose that these ERP differences reflect a reduction in the number of episodic details retrieved but not overall memory strength for remote recollection. Keywords: EEG, Memory 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: Roberts J, Tsivilis D and Mayes A (2011). Effects of retention interval on the electrophysiological correlates of recognition memory. Conference Abstract: XI International Conference on Cognitive Neuroscience (ICON XI). doi: 10.3389/conf.fnhum.2011.207.00417 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: 24 Nov 2011; Published Online: 28 Nov 2011. * Correspondence: Dr. Jenna Roberts, The University of Manchester, Manchester, United Kingdom, jenna.roberts@postgrad.manchester.ac.uk 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 Jenna Roberts Dimitris Tsivilis Andrew Mayes Google Jenna Roberts Dimitris Tsivilis Andrew Mayes Google Scholar Jenna Roberts Dimitris Tsivilis Andrew Mayes PubMed Jenna Roberts Dimitris Tsivilis Andrew Mayes 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.