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Titolo:
Distraction modulates anterior cingulate gyrus activations during the coldpressor test
Autore:
Frankenstein, UN; Richter, W; McIntyre, MC; Remy, F;
Indirizzi:
Natl Res Council Canada, Inst Biodiagnost, MR Technol Dept, Winnipeg, MB R3B 1Y6, Canada Natl Res Council Canada Winnipeg MB Canada R3B 1Y6 eg, MB R3B 1Y6, Canada Univ Manitoba, Dept Physiol, Winnipeg, MB, Canada Univ Manitoba Winnipeg MB Canada oba, Dept Physiol, Winnipeg, MB, Canada Univ Winnipeg, Dept Psychol, Winnipeg, MB R3B 2E9, Canada Univ Winnipeg Winnipeg MB Canada R3B 2E9 ol, Winnipeg, MB R3B 2E9, Canada
Titolo Testata:
NEUROIMAGE
fascicolo: 4, volume: 14, anno: 2001,
pagine: 827 - 836
SICI:
1053-8119(200110)14:4<827:DMACGA>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; CEREBRAL ACTIVATION; FUNCTIONAL MRI; THERMAL PAIN; CORTEX; RESPONSES; INTENSITY; BRAIN; ATTENTION; NEURONS;
Keywords:
anterior cingulate gyrus; attention; pain; fMRI;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Remy, F Natl Res Council Canada, Inst Biodiagnost, MR Technol Dept, 435 Ellice Ave, Winnipeg, MB R3B 1Y6, Canada Natl Res Council Canada 435 Ellice Ave Winnipeg MB Canada R3B 1Y6
Citazione:
U.N. Frankenstein et al., "Distraction modulates anterior cingulate gyrus activations during the coldpressor test", NEUROIMAGE, 14(4), 2001, pp. 827-836

Abstract

The anterior cingulate gyrus (ACG) is part of a neural network implicated in attention-demanding tasks, such as the experience of pain. However, the regions within the ACG responding to cognitive demands and to painful stimulation are not identical. Since directing attention away from a painful stimulus is known to reduce the perceived pain intensity, we hypothesized thatdistraction from pain would result both in decreased activation of ACG subregions responsive to painful stimulation and increased activation subregions responsive to the distraction task. BOLD fMRI has comparatively high spatial resolution and allows for better identification of ACG subregional responses than other neuroimaging techniques. Twelve subjects were tested using the cold pressor test (CPT), a verbal attention task (VAT), and a distraction task (DT) (a combination of the CPT and VAT). Analysis was performed on a voxel-by-voxel basis using a general linear model as implemented in SPM99. In addition to ACG activations common to both the CPT and VAT, we identified one CPT-specific cluster in an area corresponding to BA24'. The modulation effect of distraction on pain was assessed by contrasting (CPT-DT) and (DT-CPT). In support of our hypothesis, contrast (CPT-DT) revealed a decrease in BA24' during the DT and contrast (DT-CPT) showed increased activation in BA32/32'. These data suggest that distraction from pain and concomitant low pain ratings are reflected in distinct ACG subregional responses. (C) 2001 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/21 alle ore 10:02:57