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Titolo:
Brain regions involved in prospective memory as determined by positron emission tomography
Autore:
Burgess, PW; Quayle, A; Frith, CD;
Indirizzi:
Univ Coll London, Inst Cognit Neurosci, London WC1N 3AR, England Univ CollLondon London England WC1N 3AR rosci, London WC1N 3AR, England Wellcome Dept Cognit Neurol, London WC1N 3AR, England Wellcome Dept CognitNeurol London England WC1N 3AR on WC1N 3AR, England
Titolo Testata:
NEUROPSYCHOLOGIA
fascicolo: 6, volume: 39, anno: 2001,
pagine: 545 - 555
SICI:
0028-3932(2001)39:6<545:BRIIPM>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
STRATEGY APPLICATION DISORDER; EPISODIC MEMORY; WORKING-MEMORY; PREFRONTAL CORTEX; FUNCTIONAL ACTIVATION; SUSTAINED ATTENTION; FRONTAL-CORTEX; VERBAL MEMORY; RETRIEVAL; INFORMATION;
Keywords:
frontal lobes; intention; executive; positron emission tomography; functional imaging;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
74
Recensione:
Indirizzi per estratti:
Indirizzo: Burgess, PW Univ Coll London, Inst Cognit Neurosci, 17 Queen Sq, London WC1N 3AR, England Univ Coll London 17 Queen Sq London England WC1N 3AR England
Citazione:
P.W. Burgess et al., "Brain regions involved in prospective memory as determined by positron emission tomography", NEUROPSYCHO, 39(6), 2001, pp. 545-555

Abstract

Prospective memory (PM) refers to the functions that enables a person to carry out an intended act after a delay. Despite the ubiquity of this behaviour, little is known about the supporting brain structures and the roles that they play. In this study, eight healthy participants performed four different PM tasks, each under three conditions: a baseline, and two conditionsinvolving an intention. In the first of the intention conditions, subjectswere asked to make a novel response to a certain class of stimuli whilst performing an attention-demanding task. However, the expected stimuli never actually occurred. In the second intention condition subjects were expecting to see these stimuli as before, and they did occur on approximate to 20% of trials. Relative to the baseline condition, increases in regional cerebral blood flow (rCBF) as estimated by oxygen-15 positron emission tomographytechnique across ail four tasks were seen in the frontal pole (Brodmann's area 10) bilaterally, right lateral prefrontal and inferior parietal regions plus the precuneus when subjects were expecting a PM stimulus regardless of whether it actually occurred. Further activation was seen in the thalamus when the PM stimuli occurred and was acted upon, with a corresponding rCBF decrease in right lateral prefrontal cortex. It is argued that the first set of region play a role in the maintenance of an intention, with the second set involved additionally in its realisation. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 18:37:05