Global interference in the human brain during early visual processing: ERP evidence from a rapid global/local selective task

Abstract : Visual perception depends on the integration of local elements of a visual scene into a global frame. Evidence from behavioral studies shows that (1) the detection of the global frame is faster than the detection of the local parts, a phenomenon called the global advantage, and that (2) an interference of the global shape is also present during local processing. Together, these effects are called the global precedence effect (GPE). Even if the global advantage appears to impact neural processing as early as the first 100 ms post-stimulus, previous studies failed to find a global interference effect before 200 ms post-stimulus. Using for the first time a rapid display of letter component stimuli during a global/local selective task in which conditions with perceptual conflict, congruent and incongruent conditions were considered, the present event-related potential (ERP) study shows a global interference effect occurring as early as the time range of the N1 component. In particular, only congruent stimuli elicited similar N1 amplitude during the global and local tasks, whereas an increased of the N1 amplitude during the global task was observed (as compared to the local task) for both stimuli with perceptual conflict and incongruent stimuli. This finding corroborates the recent neural models of human visual perception.
Type de document :
Article dans une revue
Frontiers in Psychology, Frontiers, 2013, 4, 〈10.3389/fpsyg.2013.00539〉
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-01575830
Contributeur : Virginie Beaucousin <>
Soumis le : lundi 21 août 2017 - 17:38:54
Dernière modification le : lundi 11 février 2019 - 16:04:08

Lien texte intégral

Identifiants

Citation

Virginie Beaucousin, Grégory Simon, Mathieu Cassotti, Arlette Pineau, Olivier Houdé, et al.. Global interference in the human brain during early visual processing: ERP evidence from a rapid global/local selective task. Frontiers in Psychology, Frontiers, 2013, 4, 〈10.3389/fpsyg.2013.00539〉. 〈hal-01575830〉

Partager

Métriques

Consultations de la notice

191