Brain systems for encoding and retrieval of auditory-verbal memory. An in vivo study in humans.

Détails

ID Serval
serval:BIB_C3865108CED8
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Brain systems for encoding and retrieval of auditory-verbal memory. An in vivo study in humans.
Périodique
Brain
Auteur(s)
Fletcher P.C., Frith C.D., Grasby P.M., Shallice T., Frackowiak R.S., Dolan R.J.
ISSN
0006-8950 (Print)
ISSN-L
0006-8950
Statut éditorial
Publié
Date de publication
1995
Volume
118 ( Pt 2)
Pages
401-416
Langue
anglais
Notes
Publication types: Journal ArticlePublication Status: ppublish
Résumé
Long-term auditory-verbal memory comprises, at a neuropsychological level, a number of distinct cognitive processes. In the present study we determined the brain systems engaged during encoding (experiment 1) and retrieval (experiment 2) of episodic auditory-verbal material. In the separate experiments, PET measurements of regional cerebral blood flow (rCBF), an index of neural activity, were performed in normal volunteers during either the encoding or the retrieval of paired word associates. In experiment 1, a dual task interference paradigm was used to isolate areas involved in episodic encoding from those which would be concurrently activated by other cognitive processes associated with the presentation of paired associates, notably priming. In experiment 2, we used the cued retrieval of paired associates from episodic or from semantic memory in order to isolate the neural correlates of episodic memories. Encoding of episodic memory was associated with activation of the left prefrontal cortex and the retrosplenial area of the cingulate cortex, while retrieval from episodic memory was associated with activation of the precuneus bilaterally and of the right prefrontal cortex. These results are compatible with the patterns of activation reported in a previous PET memory experiment in which encoding and retrieval were studied concurrently. They also indicate that separate brain systems are engaged during the encoding and retrieval phases of episodic auditory-verbal memory. Retrieval from episodic memory engages a different, but overlapping, system to that engaged by retrieval from semantic memory, a finding that lends functional anatomical support to this neuropsychological distinction.
Mots-clé
Adult, Auditory Perception/physiology, Brain/physiology, Brain/radionuclide imaging, Brain Mapping, Cerebrovascular Circulation, Cognition, Frontal Lobe/physiology, Frontal Lobe/radionuclide imaging, Hippocampus/physiology, Hippocampus/radionuclide imaging, Humans, Language, Male, Memory, Psychomotor Performance, Tomography, Emission-Computed
Pubmed
Web of science
Création de la notice
16/09/2011 20:55
Dernière modification de la notice
03/03/2018 21:11
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