title: Marihuana and the temporal span of awareness.
mesh_terms: D000284:Administration, Oral; D002188:Cannabis / Q000008:administration & dosage / Q000494:pharmacology*; D002986:Clinical Trials as Topic; D005059:Euphoria; D006801:Humans; D008297:Male; D010469:Perceptual Distortion; D008517:Phytotherapy; D010865:Pilot Projects; D010919:Placebos; D013998:Time Perception / Q000187:drug effects*
chemical_list: D010919:Placebos