Titre
Functional anatomy of a common semantic system for words and pictures.
Type
article
Institution
Externe
Périodique
Auteur(s)
Vandenberghe, R.
Auteure/Auteur
Price, C.
Auteure/Auteur
Wise, R.
Auteure/Auteur
Josephs, O.
Auteure/Auteur
Frackowiak, R.S.
Auteure/Auteur
Liens vers les personnes
ISSN
0028-0836
Statut éditorial
Publié
Date de publication
1996
Volume
383
Numéro
6597
Première page
254
Dernière page/numéro d’article
256
Langue
anglais
Notes
Publication types: Journal ArticlePublication Status: ppublish
Résumé
The relationship between the semantic processing of words and of pictures is a matter of debate among cognitive scientists. We studied the functional anatomy of such processing by using positron-emission tomography (PET). We contrasted activity during two semantic tasks (probing knowledge of associations between concepts, and knowledge of the visual attributes of these concepts) and a baseline task (discrimination of physical stimulus size), performed either with words or with pictures. Modality-specific activations unrelated to semantic processing occurred in the left inferior parietal lobule for words, and the right middle occipital gyrus for pictures. A semantic network common to both words and pictures extended from the left superior occipital gyrus through the middle and inferior temporal cortex to the inferior frontal gyrus. A picture-specific activation related to semantic tasks occurred in the left posterior inferior temporal sulcus, and word-specific activations related to semantic tasks were localized to the left superior temporal sulcus, left anterior middle temporal gyrus, and left inferior frontal sulcus. Thus semantic tasks activate a distributed semantic processing system shared by both words and pictures, with a few specific areas differentially active for either words or pictures.
PID Serval
serval:BIB_357A24C749F4
PMID
Date de création
2011-09-16T17:30:30.564Z
Date de création dans IRIS
2025-05-20T18:54:51Z