Brain cortical patterns of deception

Abstract

Event Abstract Back to Event Brain cortical patterns of deception Igor S. Dikiy1* and Pavel N. Ermakov1 1 Southern Federal University, Russia People sometimes call a polygraph a lie detector but this title is misleading. A polygraph does not detect lies, but only physiological activity that is assumed to accompany telling a lie. More recently attempts have been made to investigate alternative or additional measures, for example, brain function with the help of such method as Event-related potentials (ERP). The goal of our research is to study cortical patterns of deception. Method: 36 participants were asked to make truthful and deceptive responses about perceptual events and items in memory in a series of tasks. In the present research the form of the guilty knowledge test along with ERP in the oddball paradigm was used. For statistical analysis we used post hoc analysis to compare the features of the frequency-spatial organization of cortical bio-potentials in experiment participants making deceptive and truthful responses. Results: ERP effects were found in different brain areas and in different temporal intervals (p < 0.05). It has allowed us to create the neurocognitive deception model which is including next components: 1) Regulatory components (fronto-parietal attentional network), 2) Perception of relevant stimulus (higher level of P300 wave amplitude in left frontal brain cortical region), 3) Processing of the perceived information (higher level of N400 wave amplitude in the region of Anterior Cingulate Cortex, a brain area that plays a vital role in cognitive control) and 4) Decision-making on realisation of the false answer (Occurrence of the expressed late component P540 wave in parietal cortical region). Conclusion: Studies measuring ERPs in cognitive paradigms help to increase our understanding of the inter-relations between the cognitive and brain aspects of deception. Funding: Supported by the Ministry of Education and Science of the Russian Federation SC 14.740.11.0675. Keywords: decision-making, EEG Conference: XI International Conference on Cognitive Neuroscience (ICON XI), Palma, Mallorca, Spain, 25 Sep - 29 Sep, 2011. Presentation Type: Poster Presentation Topic: Poster Sessions: Decision Making, Reward Processing & Response Selection Citation: Dikiy IS and Ermakov PN (2011). Brain cortical patterns of deception. Conference Abstract: XI International Conference on Cognitive Neuroscience (ICON XI). doi: 10.3389/conf.fnhum.2011.207.00394 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. Igor S Dikiy, Southern Federal University, Rostov-on-Don, Russia, dikayapsy@aaanet.ru 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 Igor S Dikiy Pavel N Ermakov Google Igor S Dikiy Pavel N Ermakov Google Scholar Igor S Dikiy Pavel N Ermakov PubMed Igor S Dikiy Pavel N Ermakov 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.