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Titolo:
Laser-evoked potentials to noxious stimulation during hypnotic analgesia and distraction of attention suggest different brain mechanisms of pain control
Autore:
Friederich, M; Trippe, RH; Ozcan, M; Weiss, T; Hecht, H; Miltner, WHR;
Indirizzi:
Univ Jena, Inst Psychiat, Dept Biol & Clin Psychol, D-07743 Jena, Germany Univ Jena Jena Germany D-07743 iol & Clin Psychol, D-07743 Jena, Germany
Titolo Testata:
PSYCHOPHYSIOLOGY
fascicolo: 5, volume: 38, anno: 2001,
pagine: 768 - 776
SICI:
0048-5772(200109)38:5<768:LPTNSD>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
PSYCHOPHYSIOLOGY; PERCEPTION; BEHAVIOR; RATINGS; HUMANS; MODEL; P300;
Keywords:
hypnotic analgesia; pain; laser-evoked brain potential; event-related potential; ERP; attention; distraction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
50
Recensione:
Indirizzi per estratti:
Indirizzo: Miltner, WHR Univ Jena, Inst Psychiat, Dept Biol & Clin Psychol, Steige 3,Haus 1, D-07743 Jena, Germany Univ Jena Steige 3,Haus 1 Jena Germany D-07743 Jena, Germany
Citazione:
M. Friederich et al., "Laser-evoked potentials to noxious stimulation during hypnotic analgesia and distraction of attention suggest different brain mechanisms of pain control", PSYCHOPHYSL, 38(5), 2001, pp. 768-776

Abstract

Psychological accounts of hypnosis have hypothesized that hypnosis and attention might share similar mechanisms and that hypnosis simply represents an extensive state of reduced attention. This assumption implies that reports of pain and electrocortical brain responses to painful stimulation shouldbe similarly reduced when subjects are exposed to suggestions of hypnotic analgesia (HA) or requested to distract their attention from painful Stimuli (distraction or attention: DA) as compared to a control condition (CC). To test this hypothesis, we recorded event-related electrical brain potentials to noxious laser-heat stimuli and pain reports during HA, DA, and CC from subjects highly susceptible to hypnotic suggestions. Pain reports were significantly reduced during HA and DA as compared to CC. The amplitudes of the late laser-evoked brain potential (LEP) components N200 and P320 were also significantly smaller during DA than during CC. However, no significant difference of these late LEP amplitudes was obtained for HA as compared to CC. Results indicate that hypnotic analgesia and distraction of attention represent different mechanisms of pain control and involve different brain mechanisms.

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Documento generato il 02/04/20 alle ore 22:16:23