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Titolo:
Does frontal lobe activation during retrieval reflect complexity of retrieved information?
Autore:
Hunkin, NM; Mayes, AR; Williams, SCR; Gregory, LJ; Nunn, JA; Nicholas, AK; Brammer, MJ; Bullmore, ET;
Indirizzi:
Univ Sheffield, Royal Hallamshire Hosp, Dept Clin Neurol, Sheffield S10 2JF, S Yorkshire, England Univ Sheffield Sheffield S Yorkshire England S10 2JF S Yorkshire, England Inst Psychiat, Brain Image Anal Unit, London, England Inst Psychiat London England at, Brain Image Anal Unit, London, England Inst Psychiat, Neuroimaging Res Unit, London, England Inst Psychiat London England at, Neuroimaging Res Unit, London, England
Titolo Testata:
NEUROREPORT
fascicolo: 3, volume: 11, anno: 2000,
pagine: 557 - 561
SICI:
0959-4965(20000228)11:3<557:DFLADR>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION TOMOGRAPHY; EPISODIC MEMORY; RECOGNITION MEMORY; PREFRONTAL CORTEX; BRAIN ACTIVATION; SUCCESS; PET;
Keywords:
episodic; frontal cortex; functional magnetic resonance imaging; memory; retrieval; semantic;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Hunkin, NM Univ Sheffield, Royal Hallamshire Hosp, Dept Clin Neurol, N Floor, Sheffield S10 2JF, S Yorkshire, England Univ Sheffield N Floor Sheffield S Yorkshire England S10 2JF nd
Citazione:
N.M. Hunkin et al., "Does frontal lobe activation during retrieval reflect complexity of retrieved information?", NEUROREPORT, 11(3), 2000, pp. 557-561

Abstract

Neuroimaging studies of memory have consistently shown that episodic retrieval is associated with right frontal activation, whereas semantic retrieval is associated with left frontal activation. Various hypotheses have been proposed to account for this lateralization in terms of underlying psychological processes. Alternatively, this lateralization may reflect the complexity of information retrieved: retrieval of complex, contextual information accompanying episodic retrieval invokes right-lateralized processes preferentially. We tested this hypothesis by manipulating the type and complexity of information retrieved. Initial increase in complexity of both episodic and semantic information was associated with right inferior frontal activation; further increase in complexity was associated with left dorsolateral activation. We conclude that frontal activation during retrieval is a non-linear function of the complexity of retrieved information. NeuroReport 11:557-561 (C) 2000 Lippincott Williams & Wilkins.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 06:08:20