The effect of cannabis on perception of time: a critical review.
Level 5 - mechanism / opinion, no new human data
Narrative review of existing literature without systematic review or meta-analytic methodology stated.
PubMed 22716134 · doi:10.2174/138161212802884852
What was done
The authors conducted a critical review of existing studies examining the effects of cannabis and its active compounds on human time perception across time estimation, time production, and time reproduction paradigms.
What was found
The literature is overall inconclusive due to methodological variations. Among available studies, approximately 70% of time estimation studies report that cannabis leads to over-estimation of time, whereas results from time production and time reproduction studies remain inconclusive. No specific sample sizes, statistical metrics, or effect sizes are provided in the abstract.
Why it matters
Altered time perception is a hallmark subjective effect of cannabis. Characterizing these effects helps map how cannabinoid receptor signaling interacts with neural networks involved in interval timing and related cognitive processes.
Limits
The abstract notes a paucity of research and substantial methodological variations among existing studies. The review lacks quantitative meta-analytic pooling, and the abstract does not report search parameters, study counts, or participant numbers.
Cited by
- supports Cannabis consumption causes people to perceive that a long period of time has passed when only a short period has elapsed.