Leo Hollister
Leo E. Hollister was an American professor emeritus of medicine, psychiatry and pharmacology.
Work on hallucinogens
L. E. Hollister's criteria for establishing that a drug is hallucinogenic are as follows:- in proportion to other effects, changes in thought, perception, and mood should predominate;
- intellectual or memory impairment should be minimal;
- stupor, narcosis, or excessive stimulation should not be an integral effect;
- autonomic nervous system side effects should be minimal; and
- addictive craving should be absent.