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BioMed Central, BMC Psychology, 1(2), 2014

DOI: 10.1186/2050-7283-2-22

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Rumination and interoceptive accuracy predict the occurrence of the thermal grill illusion of pain

Journal article published in 2014 by Raymonde Scheuren, Stefan Sütterlin ORCID, Fernand Anton
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Abstract Background While the neurophysiological mechanisms underlying the thermal grill illusion of pain (TGI) have been thoroughly studied, psychological determinants largely remain unknown. The present study aimed to investigate whether cognitive and affective personality traits encompassing rumination, interoception, and suggestibility may be identified as characteristics favouring the elicitation of paradoxical pain experiences. Methods The dominant hand of 54 healthy volunteers was stimulated with a water-bath driven thermal grill providing an interlaced temperature combination of 15 and 41°C. Pain intensity and pain unpleasantness perceptions were rated on a combined verbal-numerical scale (NRS). Traits were assessed via questionnaires, the heartbeat-tracking task, and warmth suggestions. Results Logistic regression analyses uncovered trait rumination and interoceptive accuracy (IA) as major predictors of the likelihood of the illusive pain occurrence (all p