Citation

Leirer VO, Yesavage JA, Morrow DG. Aviat. Space Environ. Med. 1991; 62(3): 221-227.

Affiliation

Decision Systems, Stanford, CA 94305.

Copyright

(Copyright © 1991, Aerospace Medical Association)

DOI

unavailable

PMID

1849400

Abstract

This study finds evidence for 24-h carry-over effects of a moderate social dose of marijuana on a piloting task. In separate sessions, nine currently active pilots smoked one cigarette containing 20 mg of delta 9 THC and one Placebo cigarette. Using an aircraft simulator, pilots flew just before smoking, and 0.25, 4, 8, 24, and 48 h after smoking. Marijuana impaired performance at 0.25, 4, 8, and 24 h after smoking. While seven of the nine pilots showed some degree of impairment at 24 h after smoking, only one reported any awareness of the drug's effects. The results support our preliminary study and suggest that very complex human/machine performance can be impaired as long as 24 h after smoking a moderate social dose of marijuana, and that the user may be unaware of the drug's influence.

Language: en