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. 1975 Jun 19;42(3):211-8.
doi: 10.1007/BF00421258.

Dose effects of smoked marihuana on human cognitive and motor functions

J Borg, S Gershon, M Alpert

Dose effects of smoked marihuana on human cognitive and motor functions

J Borg et al. Psychopharmacologia. .

Abstract

Graded doses of marihuana were administered to five adults in a longitudinal repeated-measurements design. Speed of response was the basic parameter measured accross tests of increasing cognitive involvement. Marihuana produced significant dose-response effects of impaired performance in all test scores. However, single automatic motor abilities demonstrated greater sensitivity than tests of greater complexity. Evidence is presented for tolerance development.

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