Neural processing of illusory and real contours revealed by high-density ERP mapping
Détails
ID Serval
serval:BIB_2AE080CD4C92
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Neural processing of illusory and real contours revealed by high-density ERP mapping
Périodique
Neuroreport
ISSN
0959-4965
Statut éditorial
Publié
Date de publication
05/2002
Peer-reviewed
Oui
Volume
13
Numéro
7
Pages
965-8
Notes
Comparative Study
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: May 24
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: May 24
Résumé
Event-related potential (ERP) studies have shown that responses to illusory (IC), as compared to no contours (NC), may differ within 200 ms following stimulus presentation. However, whether these responses reflect the modulation of similar, or the activation of distinct brain regions has never been assessed. Using ERP map series and source localisation analyses, we compared early responses (0-200 ms) to IC and NC, as well as to real contours (RC). Although IC displayed higher field strength during the N1 component, topo-graphical analyses showed a similar sequence of stable field configurations in all conditions. Source localisation applied to the N1 map revealed bilateral activation of lateral-occipital regions. These results suggest that both IC and RC processing modulate a common network associated with filling-in processes and figure-ground segregation.
Mots-clé
Adult
Analysis of Variance
Brain Mapping/*methods
Evoked Potentials/*physiology
Evoked Potentials, Visual/*physiology
Female
Humans
Illusions/physiology
Male
Photic Stimulation/methods
Pubmed
Web of science
Création de la notice
21/01/2008 10:23
Dernière modification de la notice
20/08/2019 13:10