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Titolo:
Electrophysiological localization of brain regions involved in perceptual memory
Autore:
Reinvang, I; Magnussen, S; Greenlee, MW; Larsson, PG;
Indirizzi:
Univ Oslo, Dept Psychol, N-0316 Oslo, Norway Univ Oslo Oslo Norway N-0316 niv Oslo, Dept Psychol, N-0316 Oslo, Norway Univ Freiburg, Dept Neurol, D-7800 Freiburg, Germany Univ Freiburg Freiburg Germany D-7800 t Neurol, D-7800 Freiburg, Germany Natl Ctr Epilepsy, Sandviken, Sweden Natl Ctr Epilepsy Sandviken SwedenNatl Ctr Epilepsy, Sandviken, Sweden
Titolo Testata:
EXPERIMENTAL BRAIN RESEARCH
fascicolo: 4, volume: 123, anno: 1998,
pagine: 481 - 484
SICI:
0014-4819(199812)123:4<481:ELOBRI>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
SHORT-TERM-MEMORY; CORTEX;
Keywords:
event-related potentials; memory; spatial frequency; human;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Magnussen, S Univ Oslo, Dept Psychol, N-0316 Oslo, Norway Univ Oslo OsloNorway N-0316 t Psychol, N-0316 Oslo, Norway
Citazione:
I. Reinvang et al., "Electrophysiological localization of brain regions involved in perceptual memory", EXP BRAIN R, 123(4), 1998, pp. 481-484

Abstract

Event-related potentials (ERP) were recorded during perceptual discrimination and short-term memory, varying the interstimulus interval (1-10 s) in delayed spatial frequency discrimination. Accuracy of discrimination remained unimpaired across this time interval, but choice reaction times increased. A brain source localization (BESA) model showed that the activity of the parietal and right temporal sources increased with long retention intervalsin a sequential activation pattern where a long-latency component of the parietal source specific to the memory condition was observed, the latency of which matched a memory-related increase in choice reaction times in the cognitive task. It is suggested that the temporal sources are involved in encoding and storage of visual information, and the parietal source is involved in memory retrieval.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 01:01:44