ASC and MEQ-30
Auditory alterations, Oceanic boundlessness’, MEQ-30
AUDITORY ALTERATION
Once the acute drug effects had subsided (~30 min following the end of administration), participants completed the altered states of consciousness (ASC) Scale and the Mystical Effects Questionnaire (MEQ-30). The ASC scale measures altered states of consciousness. The 94 items make up five dimensions (5D-ASC; ‘Oceanic boundlessness’, ‘Anxious ego dissolution’, ‘Visionary restructuration’, ‘Auditory alterations’, and ‘Reduced vigilance’; (