Torsten Passie MD, MA is Professor of Psychiatry and Psychotherapy at Hannover Medical School (Germany). He worked with Professor Hanscarl Leuner (Göttingen), the leading European authority on hallucinogenic drugs. From 1998 to 2010 he conducted research on the psychophysiology of hallucinogenic drugs (ketamine, nitrous oxide, psilocybin, cannabis), and their healing potential with addictions. An internationally known expert on altered states of consciousness and the pharmacology of hallucinogenic drugs, his publications have appeared in many peer-reviewed scientific journals. He is also author of many books and articles including The Pharmacology of LSD (2010), and The Science of Microdosing Psychedelics (2019).

Link to articles and chapters by Torsten Passie

Torsten Passie MD, MA

David Lukoff


David Lukoff, PhD is a Professor Emeritus of Psychology at Sofia University in Palo Alto, California, and a licensed clinical psychologist. For 5 years he taught graduate psychology courses on psychedelic substances with Jim Fadiman, PhD, one of the pioneers of psychedelic research. He conducts research and teaches courses and workshops internationally on spiritual issues in psychology and psychotherapy. He has been an author or coauthor of 80 articles and chapters (including several on psychedelic substances), and is co-author of the diagnostic category Religious or Spiritual Problem in the diagnostic manual used in the United States (DSM-5). He served as co-president of the American Association for Transpersonal Psychology for 14 years.

Link to articles and chapters by David Lukoff

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