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Titolo:
Mapping motor inhibition: Conjunctive brain activations across different versions of go/no-go and stop tasks
Autore:
Rubia, K; Russell, T; Overmeyer, S; Brammer, MJ; Bullmore, ET; Sharma, T; Simmons, A; Williams, SCR; Giampietro, V; Andrew, CM; Taylor, E;
Indirizzi:
Univ London Kings Coll, Inst Psychiat, London WC2R 2LS, England Univ London Kings Coll London England WC2R 2LS London WC2R 2LS, England Addenbrookes Hosp, Dept Psychiat, Cambridge, England Addenbrookes Hosp Cambridge England , Dept Psychiat, Cambridge, England
Titolo Testata:
NEUROIMAGE
fascicolo: 2, volume: 13, anno: 2001,
pagine: 250 - 261
SICI:
1053-8119(200102)13:2<250:MMICBA>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON EMISSION TOMOGRAPHY; INFERIOR PREFRONTAL CORTEX; ANTERIOR CINGULATE CORTEX; RESPONSE SELECTION; FUNCTIONAL-ANATOMY; FRONTAL-LOBE; CORTICAL CONTROL; OBJECT FEATURES; NEURAL ACTIVITY; WORKING-MEMORY;
Keywords:
fMRI; neuroimaging; motor response inhibition; response selection; motor preparation; motor attention; conjunction analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
89
Recensione:
Indirizzi per estratti:
Indirizzo: Rubia, K Univ London Kings Coll, Inst Psychiat, London WC2R 2LS, England Univ London Kings Coll London England WC2R 2LS C2R 2LS, England
Citazione:
K. Rubia et al., "Mapping motor inhibition: Conjunctive brain activations across different versions of go/no-go and stop tasks", NEUROIMAGE, 13(2), 2001, pp. 250-261

Abstract

Conjunction analysis methods were used in functional magnetic resonance imaging to investigate brain regions commonly activated in subjects performing different versions of go/no-go and stop tasks, differing in probability of inhibitory signals and/or contrast conditions. Generic brain activation maps highlighted brain regions commonly activated in (a) two different go/no-go task versions, (b) three different stop task versions, and (c) all 5 inhibition task versions. Comparison between the generic activation maps of stop and go/no-go task versions revealed inhibitory mechanisms specific to go/no-go or stop task performance in 15 healthy, right-handed, male adults. In the go/no-go task a motor response had to be selectively executed or inhibited in either 50% or 30% of trials. In the stop task, the motor responseto a go-stimulus had to be retracted on either 50 or 30% of trials, indicated by a stop signal, shortly (250 ms) following the go-stimulus. The shared "inhibitory" neurocognitive network by all inhibition tasks comprised mesial, medial, and inferior frontal and parietal cortices, Generic activationof the go/no-go task versions identified bilateral, but more predominantlyleft hemispheric mesial, medial, and inferior frontal and parietal cortices, Common activation to all stop task versions was in predominantly right hemispheric anterior cingulate, supplementary motor area, inferior prefrontal, and parietal cortices, On direct comparison between generic stop and go/no-go activation maps increased BOLD signal was observed in left hemispheric dorsolateral prefrontal, medial, and parietal cortices during the go/no-go task, presumably reflecting a left frontoparietal specialization for response selection. (C) 2001 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 19:15:06