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Titolo:
Medial temporal lobe activation during episodic encoding and retrieval: A PET study
Autore:
Schacter, DL; Curran, T; Reiman, EM; Chen, KW; Bandy, DJ; Frost, JT;
Indirizzi:
Harvard Univ, Dept Psychol, Cambridge, MA 02138 USA Harvard Univ Cambridge MA USA 02138 Dept Psychol, Cambridge, MA 02138 USA Case Western Reserve Univ, Dept Psychol, Tucson, AZ USA Case Western Reserve Univ Tucson AZ USA iv, Dept Psychol, Tucson, AZ USA Univ Arizona, Dept Psychiat, Tucson, AZ USA Univ Arizona Tucson AZ USAUniv Arizona, Dept Psychiat, Tucson, AZ USA Good Samaritan Reg Med Ctr, Positron Emiss Tomog Ctr, Phoenix, AZ USA GoodSamaritan Reg Med Ctr Phoenix AZ USA iss Tomog Ctr, Phoenix, AZ USA Univ Arizona, Dept Radiol, Tucson, AZ 85724 USA Univ Arizona Tucson AZ USA 85724 izona, Dept Radiol, Tucson, AZ 85724 USA Arizona State Univ, Dept Math, Tempe, AZ 85287 USA Arizona State Univ Tempe AZ USA 85287 niv, Dept Math, Tempe, AZ 85287 USA
Titolo Testata:
HIPPOCAMPUS
fascicolo: 5, volume: 9, anno: 1999,
pagine: 575 - 581
SICI:
1050-9631(1999)9:5<575:MTLADE>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
IMPLICIT MEMORY; BRAIN ACTIVITY; OBJECTS;
Keywords:
functional neuroimaging; PET; encoding; retrieval; medial temporal lobes;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Schacter, DL Harvard Univ, Dept Psychol, 33 Kirkland St, Cambridge, MA 02138 USA Harvard Univ 33 Kirkland St Cambridge MA USA 02138 02138 USA
Citazione:
D.L. Schacter et al., "Medial temporal lobe activation during episodic encoding and retrieval: A PET study", HIPPOCAMPUS, 9(5), 1999, pp. 575-581

Abstract

Recent neuroimaging studies have obtained evidence of activation in the medial temporal lobe (MTL) during episodic encoding and retrieval. On the basis of a meta-analysis of MTL activations in studies that used positron emission tomography (PET), Lepage et al. (Hippocampus 1998;8:313-322) suggestedthat episodic encoding tends to involve the anterior MTL, whereas episodicretrieval tends to involve the posterior MTL. In a meta-analysis of studies that used PET and functional magnetic resonance imaging, Schacter,and Wagner (Hippocampus 1999;9:7-24) reported weaker evidence for such a rostrocaudal distribution of encoding and retrieval activations. However, these meta-analyses were based largely on studies that examined encoding or retrievalseparately. Here, we report a direct, within-subjects comparison of MTL activation during episodic encoding and retrieval by using PET. Results indicated that both encoding and retrieval were associated with blood flow increases in similar MTL regions with little indication that encoding and retrieval are preferentially associated with activity in the anterior versus the posterior MTL. Direct comparisons revealed greater blood flow increases in posterior MTL during encoding than retrieval. (C) 1999 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 08:11:34