The influence of contour fragmentation on recognition memory: An event-related potential study

Brodeur, Mathieu B., Debruille, J. Bruno, Renoult, Louis, Prévost, Marie, Dionne-Dostie, Emmanuelle, Buchy, Lisa and Lepage, Martin (2011) The influence of contour fragmentation on recognition memory: An event-related potential study. Brain and Cognition, 76 (1). pp. 115-122. ISSN 0278-2626

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Abstract

The present study was carried out to examine how the event-related potentials to fragmentation predict recognition success. Stimuli were abstract meaningless figures that were either complete or fragmented to various extents but still recoverable. Stimuli were first encoded as part of a symmetry discrimination task. In a subsequent recognition phase, encoded stimuli were presented complete along with never presented stimuli and participants performed an old/new discrimination task. Fragmentation stimuli elicited more negative ERPs than complete figures over the frontal, central and parietal areas between 180 and 260 ms, and over the occipito-temporal areas between 220 and 340 ms. Only this latter effect was modulated as a function of whether stimuli were recognized or not during the recognition phase of the memory test. More specifically, the effect occurred for stimuli that were later forgotten and was absent for stimuli that were later recognized. This ERP to fragmentation, the occipito-temporal Nfrag, possibly reflects the brain response to encoding difficulty, and is thus predictive of recognition performance.

Item Type:	Article
Faculty \ School:	Faculty of Social Sciences > School of Psychology
UEA Research Groups:	Faculty of Social Sciences > Research Groups > Cognition, Action and Perception
Depositing User:	Pure Connector
Date Deposited:	11 Dec 2014 14:32
Last Modified:	03 May 2025 23:51
URI:	https://ueaeprints.uea.ac.uk/id/eprint/50775
DOI:	10.1016/j.bandc.2011.02.010

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