Cognitive inhibition of number/length interference in a Piaget-like task in young adults: evidence from ERPs and fMRI. - Université Pierre et Marie Curie Accéder directement au contenu
Article Dans Une Revue Human Brain Mapping Année : 2006

Cognitive inhibition of number/length interference in a Piaget-like task in young adults: evidence from ERPs and fMRI.

Résumé

We sought to determine whether the neural traces of a previous cognitive developmental stage could be evidenced in young adults. In order to do so, 12 young adults underwent two functional imaging acquisitions (EEG then fMRI). During each session, two experimental conditions were applied: a Piaget-like task with number/length interference (INT), and a reference task with number/length covariation (COV). To succeed at Piaget's numerical task, which children under the age of 7 years usually fail, the subjects had to inhibit a misleading strategy, namely, the visuospatial length-equals-number bias, a quantification heuristic that is often relevant and that continues to be used through adulthood. Behavioral data confirmed that although there was an automation in the young adult subjects as assessed by the very high number of accurate responses (>97%), the inhibition of the "length equals number strategy" had a cognitive cost, as the reaction times were significantly higher in INT than in COV (with a difference of 230 ms). The event-related potential results acquired during the first session showed electrophysiological markers of the cognitive inhibition of the number/length interference. Indeed, the frontal N2 was greater during INT than during COV, and a P3(late)/P6 was detected only during INT. During the fMRI session, a greater activation of unimodal areas (the right middle and superior occipital cortex) and in the ventral route (the left inferior temporal cortex) was observed in INT than in COV. These results seem to indicate that when fully automated in adults, inhibition processes might take place in unimodal areas.
Fichier principal
Vignette du fichier
leroux_hbm-05-0086_R1_accepted.pdf (1.04 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00541622 , version 1 (23-03-2023)

Identifiants

Citer

Gaëlle Leroux, Marc Joliot, Stéphanie Dubal, Bernard Mazoyer, Nathalie Tzourio-Mazoyer, et al.. Cognitive inhibition of number/length interference in a Piaget-like task in young adults: evidence from ERPs and fMRI.. Human Brain Mapping, 2006, 27 (6), pp.498-509. ⟨10.1002/hbm.20194⟩. ⟨hal-00541622⟩
98 Consultations
17 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More