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Titolo:
Brain activation during automatic and controlled processing of semantic relations: a priming experiment using lexical-decision
Autore:
Rossell, SL; Bullmore, ET; Williams, SCR; David, AS;
Indirizzi:
Macquarie Univ, MACCS, Sydney, NSW 2109, Australia Macquarie Univ Sydney NSW Australia 2109 CCS, Sydney, NSW 2109, Australia Addenbrookes Hosp, Dept Psychiat, Cambridge CB2 2QQ, England Addenbrookes Hosp Cambridge England CB2 2QQ , Cambridge CB2 2QQ, England GKT Sch Med, Dept Psychol Med, London SE5 8AF, England GKT Sch Med London England SE5 8AF Psychol Med, London SE5 8AF, England Inst Psychiat, London SE5 8AF, England Inst Psychiat London England SE5 8AF t Psychiat, London SE5 8AF, England
Titolo Testata:
NEUROPSYCHOLOGIA
fascicolo: 11, volume: 39, anno: 2001,
pagine: 1167 - 1176
SICI:
0028-3932(2001)39:11<1167:BADAAC>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANTERIOR CINGULATE CORTEX; RIGHT-HEMISPHERE; CEREBRAL HEMISPHERES; SPREADING ACTIVATION; RESPONSE SELECTION; WORD RECOGNITION; TEMPORAL-LOBE; RETRIEVAL; LANGUAGE; PET;
Keywords:
anterior cingulate; functional MRI; semantic priming; temporal lobe;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
47
Recensione:
Indirizzi per estratti:
Indirizzo: Rossell, SL Macquarie Univ, MACCS, Sydney, NSW 2109, Australia Macquarie Univ Sydney NSW Australia 2109 NSW 2109, Australia
Citazione:
S.L. Rossell et al., "Brain activation during automatic and controlled processing of semantic relations: a priming experiment using lexical-decision", NEUROPSYCHO, 39(11), 2001, pp. 1167-1176

Abstract

Semantic relations may be studied using the experimental technique known as semantic priming, in which a word 'primes' the processing of a related target (e.g. lion-tiger), following a short delay. Priming may be automatic or, with longer delays, under more controlled processing. This study used functional magnetic resonance imaging (fMRI) to examine the cerebral activation during two lexical-decision semantic priming experiments, with a short and long delay, representing automatic and controlled processing, respectively. A further two un-primed lexical-decision tasks were performed to distinguish cerebral activation specific to semantic priming itself from those utilised during lexical-decision processes. Distinct regions of anterior cingulate cortex (ACC) were critical to automatic and controlled semantic priming, whilst the putamen and hippocampal complex responded differently to unrelated and semantically related prime-target pairs. Lexical-decision alone revealed activation in posterior temporal cortex especially on the left, inagreement with previous neuroimaging studies. The results provide a plausible neural substrate for common semantic relations independent of task demands and further emphasise the regional functional specialisation of the ACC. (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 29/01/20 alle ore 19:06:46