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Expectancy effects of pain and disgust in perceptual and moral decisions

Defense Thèse de doctorat : Univ. Genève et Lausanne, 2016 - Neur. 188 - 2016/11/30
Abstract Although expectancy effects have been described before (e.g. placebo effect), no one ever questioned their specificity. After all, it might be that when people anticipate pain, they form a representation of the approaching event, which could be shared with other aversive experiences, such as the case of disgust. In the present thesis, I examined the nature and specificity of expectancy of pain and disgust in the context of perceptual decisions (Experiments 1 & 2) and higher cognitive (moral) decisions (Experiments 3 & 4). I conducted four experiments to analyze behavioral, physiological and neural measures (using fMRI) from healthy human volunteers, which were all engaged in a new experimental set-up, specifically developed for testing the following experimental questions: (1) to which degree pain and disgust expectations recruit similar/dissociated representations of the upcoming event? (2) to which extent pain and disgust expectations affect high-level decisions, such as those involving morally-questionable behavior?
Keywords PainDisgustExpectationsPain expectancyAnticipationAnticipation of painAnticipation of disgustPredictionSensory expectationsAffective expectationsAffective processingPlaceboCuesPredictive-cuesfMRINeuroimagingThermal stimulationOlfactionNociceptionOdorsOlfactory processingNoxiousnessNoxious stimulusBrainBrain activitySalienceNeural activityAversivenessInsulaCingulate cortex
URN: urn:nbn:ch:unige-916245
Note Thèse en Neurosciences des universités de Genève et de Lausanne
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Thesis (5.6 MB) - public document Free access
Research group Affective sciences
Swiss National Science Foundation: SNFgrant n.32003B_138413
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SHARVIT, Gil Shlomo. Expectancy effects of pain and disgust in perceptual and moral decisions. Université de Genève. Thèse, 2016. doi: 10.13097/archive-ouverte/unige:91624 https://archive-ouverte.unige.ch/unige:91624

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Deposited on : 2017-02-06

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