Phenomenology of psychedelic experiences The Touristic Use of Ayahuasca in Peru January 1, 2020 Tom John Wolff 1 citation Hanscarl Leuner's concept of the psychotoxic base-syndrome characterizes the psychological functions underlying the various phenomena experienced during hallucinogenic intoxication. DOI: 10.1007/978-3-658-29373-4_7 Full text