Healthy Clinical Trial
Official title:
Beyond the Self and Back: Neuropharmacological Mechanisms Underlying the Dissolution of the Self
The aim of the study is to identify neural signatures, behavioral and phenomenological expressions of self-related processes including: sense of agency, semantic distinction between self and other, selflessness (altruism), social agency, embodied self (interoception), perceptual functioning of dissolved self including hallucinations and crossmodal processing, and finally the mystical type dissolution of the self.
Four placebo-controlled, double blind sets of procedures using psilocybin with four independent study groups will be conducted. The number of subjects, testing procedures and dose of psilocybin for each group are as follows: group 1 (20 subjects, EEG, questionnaires, 0.200 mg/Kg body weight), group 2 (30 subjects, functional magnetic resonance imaging (fMRI), questionnaires, 0.200 mg/Kg body weight), group 3 (10 subjects, fMRI, questionnaires, 0.215 mg/Kg body weight), study group 4 (80 subjects, blood serum and saliva parameters, questionnaires, fMRI (only in 20 subjects from this group), 0.315 mg/Kg body weight). The groups 1, 2 and 3 involve healthy volunteers. The group 4 involves healthy volunteer long-term and short-term meditators during a 5-day group meditation retreat. Together, 140 subjects will participate in the study. ;
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