Effects of Marihuana on Contingent Negative Variation and Reaction Time
- 1 October 1974
- journal article
- clinical trial
- Published by American Medical Association (AMA) in Archives of General Psychiatry
- Vol. 31 (4) , 537-541
- https://doi.org/10.1001/archpsyc.1974.01760160077016
Abstract
Contingent negative variation (CNV) and reaction time were measured in 12 subjects after they smoked placebo and marihuana cigarettes. Change in CNV amplitude after smoking marihuana was negatively correlated (r =-.83) with subjects' ratings of their "high," and not significantly correlated with change in reaction time. The results suggest that the relationship of CNV amplitude to marihuana dose is probably in the form of an inverted U. The CNV amplitude may reflect attentional effort or level of interest rather than efficiency of attentional performance, as measured by reaction time.Keywords
This publication has 14 references indexed in Scilit:
- Anxiety, Stress, and the Contingent Negative VariationArchives of General Psychiatry, 1973
- Contingent negative variation (CNV) and psychological processes in man.Psychological Bulletin, 1972
- Marijuana, Memory, and PerceptionAmerican Journal of Psychiatry, 1971
- Behavioral Effects of MarihuanaArchives of General Psychiatry, 1970
- Psychological studies of marijuana and alcohol in manPsychopharmacology, 1970
- Relationship of slow potential changes to response speed and motivation in manElectroencephalography and Clinical Neurophysiology, 1969
- Relationships between the contingent negative variation (CNV) and reaction timePhysiology & Behavior, 1969
- Attention Reduction and Suppressed Direct-Current Potentials in the Human BrainScience, 1969
- Cortical slow-wave and cardiac rate responses in stimulus orientation and reaction time conditions.Journal of Experimental Psychology, 1969
- The effects of attention and distraction on the contingent negative variation in normal and neurotic subjectsElectroencephalography and Clinical Neurophysiology, 1968