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Titolo:
Cerebral mechanisms of hypnotic induction and suggestion
Autore:
Rainville, P; Hofbauer, RK; Paus, T; Duncan, GH; Bushnell, MC; Price, DD;
Indirizzi:
Univ Montreal, Fac Med Dent, Dept Stomatol, Montreal, PQ H3C 3J7, Canada Univ Montreal Montreal PQ Canada H3C 3J7 ol, Montreal, PQ H3C 3J7, Canada McGill Univ, Montreal, PQ H3A 2T5, Canada McGill Univ Montreal PQ Canada H3A 2T5 Univ, Montreal, PQ H3A 2T5, Canada Univ Florida, Gainesville, FL 32611 USA Univ Florida Gainesville FL USA 32611 Florida, Gainesville, FL 32611 USA
Titolo Testata:
JOURNAL OF COGNITIVE NEUROSCIENCE
fascicolo: 1, volume: 11, anno: 1999,
pagine: 110 - 125
SICI:
0898-929X(199901)11:1<110:CMOHIA>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION TOMOGRAPHY; ANTERIOR CINGULATE CORTEX; HUMAN-BRAIN; INTRAVENOUS (H2O)-O-15; FUNCTIONAL MRI; WORKING-MEMORY; PAIN; HYPNOSIS; SUSCEPTIBILITY; HEMISPHERE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
72
Recensione:
Indirizzi per estratti:
Indirizzo: Duncan, GH Univeal,treal, Fac Med Dent, Dept Stomatol, CP 6128,Succ Centreville, Montr Univ Montreal CP 6128,Succ Centreville Montreal PQ Canada H3C 3J7
Citazione:
P. Rainville et al., "Cerebral mechanisms of hypnotic induction and suggestion", J COGN NEUR, 11(1), 1999, pp. 110-125

Abstract

The neural mechanisms underlying hypnotic states and responses to hypnoticsuggestions remain largely unknown and, to date, have been studied only with indirect methods. Here, the effects of hypnosis and suggestions to alterpain perception were investigated in hypnotizable subjects by using positron emission tomography (PET) measures of regional cerebral blood flow (rCBF) and electroencephalographic (EEG) measures of brain electrical activity. The experimental conditions included a restful state (Baseline) followed byhypnotic relaxation alone (Hypnosis) and by hypnotic relaxation with suggestions for altered pain unpleasantness (Hypnosis-with-Suggestion). During each scan, the left hand was immersed in neutral (35 degrees C) or painfullyhot (47 degrees C) water in the first two conditions and in painfully hot water in the last condition. Hypnosis was accompanied by significant increases in both occipital rCBF and delta EEG activity, which were highly correlated with each other (r = 0.70, p < 0.0001). Peak increases in rCBF were also observed in the caudal part of the right anterior cingulate sulcus and bilaterally in the inferior frontal gyri. Hypnosis-related decreases in rCBFwere found in the right inferior parietal lobule, the left precuneus, and the posterior cingulate gyrus. Hypnosis-with-suggestions produced additional widespread increases in rCBF in the frontal cortices predominantly on theleft side. Moreover, the medial and lateral posterior parietal cortices showed suggestion-related increases overlapping partly with regions of hypnosis-related decreases. Results support a state theory of hypnosis in which occipital increases in rCBF and delta activity reflect the alteration of consciousness associated with decreased arousal and possible facilitation of visual imagery. Frontal increases in rCBF associated with suggestions for altered perception might reflect the verbal mediation of the suggestions, working memory, and top-down processes involved in the reinterpretation of theperceptual experience. These results provide a new description of the neurobiological basis of hypnosis, demonstrating specific patterns of cerebral activation associated with the hypnotic state and with the processing of hypnotic suggestions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 22:07:56