Heterogeneity in high hypnotic suggestibility and the neurophysiology of hypnosis Hétérogénéité de la haute suggestibilité hypnotique et neurophysiologie de l’hypnose

Heterogeneity in high hypnotic suggestibility and the neurophysiology of hypnosis. General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Heterogeneity in high hypnotic suggestibility and the neurophysiology of hypnosis Hétérogénéité de la haute suggestibilité hypnotique et neurophysiologie de l'hypnose Considerable progress has been made regarding the neural basis of hypnosis and a diverse range of studies attest to its utility as an experimental technique for modulating psychological phenomena in the laboratory and to its clinical efficacy. Against this backdrop, we read with great interest Vanhaudenhuyse et al.'s recent review on the neurophysiology of hypnosis [8], in which they succinctly , but comprehensively, review advancements in this nascent research domain. Here, we aim to supplement their review by correcting a mistake concerning hetero-geneity in high hypnotic suggestibility and by highlighting the significance of heterogeneity for the neurophysiology of hypnosis. The extent to which executive cognitive processes are altered in individuals who exhibit high hypnotic suggestibil-ity has important consequences as such alterations may lend insights into atypical frontal or parietal functioning in this population. In reviewing the relationship between hypnotic suggestibility and conversion and dissociative symptoms, Vanhaudenhuyse et al. [8] implied that we found that highly suggestible participants displayed greater responsiveness to hallucination suggestions, greater involuntariness during hypnotic responding, impaired working memory capacity, and greater pathological dissociation and fantasy-proneness than low suggestible participants [5]. Contrary to what they wrote, these differences were only observed in high dis-sociative highly suggestible participants, relative to both low dissociative highly suggestible and low suggestible participants. The latter two groups exhibited comparable cognitive profiles despite their differences in hypnotic sug-gestibility. Evidence of heterogeneity within the population of high suggestible individuals helps to illuminate nuances in hypnotic …