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Titolo:
PAIN-EVOKED POTENTIALS - WHAT DO THEY REALLY MEASURE
Autore:
ZASLANSKY R; SPRECHER E; KATZ Y; ROZENBERG B; HEMLI JA; YARNITSKY D;
Indirizzi:
RAMBAM MED CTR,INST CLIN NEUROPHYSIOL HAIFA ISRAEL RAMBAM MED CTR,INST CLIN NEUROPHYSIOL HAIFA ISRAEL RAMBAM MED CTR,DEPT NEUROL HAIFA ISRAEL RAMBAM MED CTR,DEPT ANESTHESIOL HAIFA ISRAEL TECHNION ISRAEL INST TECHNOL,SCH MED HAIFA ISRAEL
Titolo Testata:
Electroencephalography and clinical neurophysiology. Evoked potentials
fascicolo: 5, volume: 100, anno: 1996,
pagine: 384 - 391
SICI:
0168-5597(1996)100:5<384:PP-WDT>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
NOXIOUS THERMAL-STIMULATION; BENZODIAZEPINE SEDATION; CEREBRAL POTENTIALS; GENERAL-ANESTHESIA; MIDAZOLAM; COMPONENTS; INTENSITY; EEG; SENSITIVITY; ATTENTION;
Keywords:
PAIN EVOKED POTENTIALS; PAIN; P300; CO2 LASER; BENZODIAZEPINES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
R. Zaslansky et al., "PAIN-EVOKED POTENTIALS - WHAT DO THEY REALLY MEASURE", Electroencephalography and clinical neurophysiology. Evoked potentials, 100(5), 1996, pp. 384-391

Abstract

Cerebral evoked potentials (EPs) in response to painful stimuli have been recorded since the 1970s. Based on the apparent relationship of the response amplitude to intensity of stimulation, these potentials are conventionally interpreted as reflecting the sensory-discriminative aspects of pain. As such, pain-EPs provide an objective measure for sensation of pain. An alternative interpretation regards the pain-EP as comprised of al least two overlapping components, one pain-specific, the other, a P300 wave. In the case of pain, the P300 may reflect the degree of discomfort or unpleasantness, thus reflecting the emotional-motivational aspect. To establish the nature of the pain-EP, mini dosesof a benzodiazepine, counterbalanced with placebo, were given to 6 normal volunteers. Benzodiazepines decrease anxiety, and so diminish theemotional response to pain, but they have no analgesic effect. In allsubjects, pain perception was unchanged, while the EP wave was almostcompletely obliterated. We conclude that the pain-EP reflects the emotional-motivational response to pain rather than the sensory-discriminative. Thus, it provides a useful neurophysiological tool for studyingthe emotions associated with pain.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 03:10:31