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Titolo:
Attentional set effects on spinal and supraspinal responses to pain
Autore:
Dowman, R;
Indirizzi:
Clarkson Univ, Dept Psychol, Potsdam, NY 13699 USA Clarkson Univ Potsdam NY USA 13699 v, Dept Psychol, Potsdam, NY 13699 USA
Titolo Testata:
PSYCHOPHYSIOLOGY
fascicolo: 3, volume: 38, anno: 2001,
pagine: 451 - 464
SICI:
0048-5772(200105)38:3<451:ASEOSA>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANTERIOR CINGULATE CORTEX; SURAL NERVE-STIMULATION; LASER-EVOKED-POTENTIALS; POSITRON EMISSION TOMOGRAPHY; NOCICEPTIVE FLEXION REFLEX; DIPOLE SOURCE LOCALIZATION; INNOCUOUS-RELATED ACTIVITY; EVENT-RELATED POTENTIALS; HUMAN CEREBRAL-CORTEX; INTRACEREBRAL POTENTIALS;
Keywords:
attention; pain; somatosensory evoked potential; P3a; anterior cingulate;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
103
Recensione:
Indirizzi per estratti:
Indirizzo: Dowman, R Clarkson Univ, Dept Psychol, Potsdam, NY 13699 USA Clarkson Univ Potsdam NY USA 13699 ychol, Potsdam, NY 13699 USA
Citazione:
R. Dowman, "Attentional set effects on spinal and supraspinal responses to pain", PSYCHOPHYSL, 38(3), 2001, pp. 451-464

Abstract

The effects of attentional set on subjective magnitude ratings, spinal reflexes, and somatosensory evoked potentials (SEP) elicited by innocuous and painful sural nerve stimulation were investigated in 24 subjects. Cuing stimuli informed subjects as to whether a visual identification or a somatosensory rating task would follow. Twenty percent of the trials were invalidly cued, where the subjects were expecting a visual stimulus but were given a sural nerve stimulus and vice versa. Subjective magnitude ratings were lower in the invalidly cued condition than the validly cued condition. Attentional set had no effect on innocuous-related spinal or early cortical responses; nor on the spinal nociceptive withdrawal reflex. The pain-related negative difference potential (NDP) and P2 component of the SEP were largest in the invalidly cued condition. These results provide further support for ourhypothesis that the NDP is generated in part by the anterior cingulate, and suggest that the anterior cingulate response to pain reflects non-pain-specific cognitive processes (e.g., orienting attention towards important stimuli in the environment and/or response competition) and not some aspect ofthe pain experience. The effects of attentional set on the pain-related P2suggests that it might correspond to the P3a event-related potential. If this is the case, the pain-related P2 could serve as a useful index of neural processes involved in the cognitive-evaluative aspect of pain.

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Documento generato il 03/04/20 alle ore 07:55:35