NEURO-IMAGING OF SOLVING A NUMERICAL PIAGET-LIKE TASK IN YOUNG ADULTS. Behavioural data, Hemodynamic data (fMRI) and electrophysiological data (EEG). ; IMAGERIE CEREBRALE DE LA RESOLUTION D'UNE TACHE NUMERIQUE ADAPTEE DE PIAGET CHEZ LE JEUNE UNE ADULTE. Mesures comportementales, hémodynamiques (IRMf) et électrophysiologiques (EEG)
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Media type:
E-Book
Title:
NEURO-IMAGING OF SOLVING A NUMERICAL PIAGET-LIKE TASK IN YOUNG ADULTS. Behavioural data, Hemodynamic data (fMRI) and electrophysiological data (EEG). ; IMAGERIE CEREBRALE DE LA RESOLUTION D'UNE TACHE NUMERIQUE ADAPTEE DE PIAGET CHEZ LE JEUNE UNE ADULTE. Mesures comportementales, hémodynamiques (IRMf) et électrophysiologiques (EEG)
Published:
[Erscheinungsort nicht ermittelbar]: HAL CCSD, 2005
Language:
French
Origination:
University thesis:
Dissertation, HAL CCSD, 2005
Footnote:
Description:
According to Jean Piaget, a 7-8 year-old child succeeds in a conservation of number task since he understands that two rows contain an equal number of objects even if they differ in length (because the objects in one of the rows have been spread apart). To succeed in such a task, it was proposed that the visuospatial interference is overcame thanks to the inhibition of the length=number" strategy. Here, we propose that neural traces of that developmental stage persist in the adult brain. In this perspective, we conducted neuro-imaging studies on a Piaget-like task in young adults. After a bibliographical state of art about the numerical abilities across cognitive development, the neural bases of cognitive inhibition and numerical processes, two experiments are presented. A first experiment using event-related potentials, in a first session, shows that the inhibition of the number/length interference, contrasted to a control condition of covariation, elicits electrophysiological waves typical of inhibition (N2 and P3). In a second session, the fMRI data recorded from the same subjects show that such an inhibition recruits posterior heteromodal areas. A second experiment using fMRI (without previous EEG session) also points out the role of the anterior cingulate cortex, known to be involved in inhibitory control (namely, conflict monitoring, error detection). Bilateral parietal areas for counting or mental/spatial manipulation are also activated in this numerical Piaget-like task. In conclusion, our work confirms that in adult's brain, any of the perceptual biases of early childhood might not have been fully overcame or at least that their inhibition requires a neurocognitive cost.