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US-inflation in a differential odor-conditioning paradigm is not robust: relevance for medically unexplained symptoms.

作者信息

Devriese Stephan, De Peuter Steven, Van Diest Ilse, Van de Woestijne Karel P, Van den Bergh Omer

机构信息

Research Group for Stress, Health, and Well-being, Faculty of Psychology and Educational Sciences, University of Leuven, Tiensestraat 102, B-3000 Leuven, Belgium.

出版信息

J Behav Ther Exp Psychiatry. 2006 Dec;37(4):314-32. doi: 10.1016/j.jbtep.2006.03.003. Epub 2006 Jun 5.

Abstract

Reported somatic symptoms without clear relation to physiological processes are studied. A learning paradigm was used with two odors (CSs) and the inhalation of CO(2)-enriched air (US), while measuring symptom levels and respiratory behavior. After paring one odor with the CO(2)-enriched air and the other odor with air, half of the participants received a US-inflation manipulation (information manipulation and enhanced US). Subsequently, all participants received both odors with air (test). A difference between the odor previously paired with CO(2)-enriched air and the odor previously paired with air was found for the symptom measure, US-expectancy ratings, and, to a lesser extent, for respiratory volume. No differences, however, were found between the group receiving the US-inflation manipulation and a group not receiving this manipulation. The results indicate that, despite a successful learning of reported symptoms, US-inflation does not seem to be robust.

摘要

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