Titre :

Cognitive inhibition of number/length interference in a Piaget-like task: evidence by combining ERP and MEG.

Auteur(s) :

Joliot, Marc [Auteur]
Centre-Imagerie, Neurosciences, et Application aux Pathologies [CI-NAPS - UMR 6232]
Leroux, Gaëlle [Auteur]
Groupe d'imagerie neuro-fonctionnelle [GIN - UMR 6194]
Dubal, Stéphanie [Auteur]
Centre Emotion
Vulnérabilité Adaptation et Psychopathologie [VAP]
Tzourio-Mazoyer, Nathalie [Auteur]
Centre-Imagerie, Neurosciences, et Application aux Pathologies [CI-NAPS - UMR 6232]
Houdé, Olivier [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Mazoyer, Bernard [Auteur]
CHU Caen
Institut universitaire de France [IUF]
Groupe d'imagerie neuro-fonctionnelle [GIN - UMR 6194]
Petit, Laurent [Auteur]
Département Systèmes [DSYS]

Titre de la revue :

Clinical Neurophysiology

Pagination :

1501-13

Éditeur :

Elsevier

Date de publication :

2009-08

ISSN :

1388-2457

Discipline(s) HAL :

Sciences du Vivant [q-bio]/Neurosciences [q-bio.NC]

Résumé en anglais : [en]

OBJECTIVE: We combined event-related potential (ERP) and magnetoencephalography (MEG) acquisition and analysis to investigate the electrophysiological markers of the inhibitory processes involved in the number/length ...
Lire la suite >OBJECTIVE: We combined event-related potential (ERP) and magnetoencephalography (MEG) acquisition and analysis to investigate the electrophysiological markers of the inhibitory processes involved in the number/length interference in a Piaget-like numerical task. METHODS: Eleven healthy subjects performed four gradually interfering conditions with the heuristic "length equals number" to be inhibited. Low resolution tomography reconstruction was performed on the combined grand averaged electromagnetic data at the early (N1, P1) and late (P2, N2, P3(early) and P3(late)) latencies. Every condition was analyzed at both scalp and regional brain levels. RESULTS: The inhibitory processes were visible on the late components of the electromagnetic brain activity. A right P2-related frontal orbital activation reflected the change of strategy in the inhibitory processes. N2-related SMA/cingulate activation revealed the first occurrence of the stimuli processing to be inhibited. Both P3 components revealed the working memory processes operating in a medial temporal complex and the mental imagery processes subtended by the precuneus. CONCLUSIONS: Simultaneous ERP and MEG signal acquisition and analysis allowed to describe the spatiotemporal patterns of neural networks involved in the inhibition of the "length equals number" interference. SIGNIFICANCE: Combining ERP and MEG ensured a sensitivity which could be reached previously only through invasive intracortical recordings.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL