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Titolo:
Short duration power changes in the EEG during recognition memory for words and faces
Autore:
Burgess, AP; Gruzelier, JH;
Indirizzi:
Univ London Imperial Coll Sci Technol & Med, Sch Med, Div Neurosci & Psychol Med, London W6 8RF, England Univ London Imperial Coll Sci Technol & MedLondon England W6 8RF ngland
Titolo Testata:
PSYCHOPHYSIOLOGY
fascicolo: 5, volume: 37, anno: 2000,
pagine: 596 - 606
SICI:
0048-5772(200009)37:5<596:SDPCIT>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED DESYNCHRONIZATION; LONG-TERM POTENTIATION; BRAIN POTENTIALS; COGNITIVE TASKS; THETA RHYTHM; FREQUENCY WORDS; VERBAL MEMORY; ERD PATTERNS; SCALP EEG; REPETITION;
Keywords:
EEG; event-related desynchronization; memory;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
73
Recensione:
Indirizzi per estratti:
Indirizzo: Burgess, AP Univ London Imperial Coll Sci Technol & Med, Sch Med, Div Neurosci & Psychol Med, St Dunstans Rd, London W6 8RF, England Univ London Imperial Coll Sci Technol & Med St Dunstans Rd London England W6 8RF
Citazione:
A.P. Burgess e J.H. Gruzelier, "Short duration power changes in the EEG during recognition memory for words and faces", PSYCHOPHYSL, 37(5), 2000, pp. 596-606

Abstract

Although memory has been widely studied using event-related potentials, memory-related changes in the electroencephalogram (EEG) have been relativelyneglected. The aim of this study was to determine whether evidence could be found for memory-related changes in the EEG. EEG was recorded from a sample of healthy volunteers while they performed ward and face recognition memory tasks. Data were analyzed using the method of event-related desynchronization. In the theta frequency range there was a short-duration increase inpower that occurred in the first 250 ms that was maximal at temporal sites(T5/T6). For words, but not faces, there was a repetition effect in theta such that new words elicited greater synchronization than old words at the midline frontal electrode (Fz). In the alpha frequency range there was a lateralized repetition effect, which occurred from 750 ms. In upper alpha this effect was lateralized in the expected way with greater desynchronizationat temporo-parietal sites an the left for words and on the right far faces. For lower alpha, the lateralization was reversed. The meanings of these findings are interpreted in the light of existing models of recognition memory.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 20:05:59