The time course of visual influences in letter recognition

Madec, S., Le Goff, K., Riès, S. K., Legou, T., Rousselet, G. , Courrieu, P., Alario, F.-X., Grainger, J. and Rey, A. (2016) The time course of visual influences in letter recognition. Cognitive, Affective and Behavioral Neuroscience, 16(3), pp. 406-414. (doi: 10.3758/s13415-015-0400-5) (PMID:26742753)

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This study builds on a specific characteristic of letters of the Roman alphabet—namely, that each letter name is associated with two visual formats, corresponding to their uppercase and lowercase versions. Participants had to read aloud the names of single letters, and event-related potentials (ERPs) for six pairs of visually dissimilar upper- and lowercase letters were recorded. Assuming that the end product of processing is the same for upper- and lowercase letters sharing the same vocal response, ERPs were compared backward, starting from the onset of articulatory responses, and the first significant divergence was observed 120 ms before response onset. Given that naming responses were produced at around 414 ms, on average, these results suggest that letter processing is influenced by visual information until 294 ms after stimulus onset. This therefore provides new empirical evidence regarding the time course and interactive nature of visual letter perception processes.

Item Type:Articles
Additional Information:This study was funded by the European Research Council (ERC Research Grant 230313) and carried out within the Labex BLRI (ANR-11-LABX-0036). It has benefited from support from the French government, managed by the French National Agency for Research (ANR), under the project BInvestments for the Future, A*MIDEX^ (ANR-11-IDEX-0001-02). S.K.R. was supported by a postdoctoral grant from the Fyssen Foundation and by the National Institute on Deafness and Other Communication Disorders of the National Institutes of Health, under Award Number F32DC013245.
Glasgow Author(s) Enlighten ID:Rousselet, Dr Guillaume
Authors: Madec, S., Le Goff, K., Riès, S. K., Legou, T., Rousselet, G., Courrieu, P., Alario, F.-X., Grainger, J., and Rey, A.
College/School:College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience
Journal Name:Cognitive, Affective and Behavioral Neuroscience
ISSN (Online):1531-135X
Published Online:07 January 2016
Copyright Holders:Copyright © 2016 Psychonomic Society, Inc.
First Published:First published in Cognitive, Affective and Behavioral Neuroscience 16(3):406-414
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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