Effects of marijuana on temporal discriminations in humans.
Effects of marijuana on temporal discriminations in humans.
复制标题
大麻对人类时间歧视的影响。
DOI：
10.1097/01.fbp.0000197458.08892.fc
复制
发表时间：
2006
影响因子：
1.6
通讯作者：
Tcheremissine,OlegV
中科院分区：
文献类型：
--
作者：
Lieving,LoriM;Lane,ScottD;Cherek,DonR;Tcheremissine,OlegV
Marijuana has been reported to alter the discrimination of time. The present study used a psychophysical approach to examine the effects of marijuana on temporal discrimination in humans. Research participants were required to push one of two buttons depending on the duration of a conditional stimulus (a blue square on a computer monitor). Correct choices (‘C’button after a 2-s stimulus;‘A’button after a 4-s stimulus) resulted in an increase in session earnings of $0.12. Intermediate durations (probe stimuli between 2 and 4 s) were also presented. Psychophysical functions relating the probability of judging a duration as ‘long’(4 s) as a function of actual stimulus durations were characterized by a logistic function fitted to the data. Administration of both low (1/2 placebo and 1/2 2.2% Δ 9-tetrahydrocannabinol cigarette) and high (3.89% Δ 9-tetrahydrocannabinol) potency marijuana cigarettes produced a bias of judging intervals as long, consistent with an interpretation that subjective time passes more quickly when an individual is intoxicated by marijuana. Deliberation time, operationally defined as response latency, peaked on trials with sample durations that corresponded to the measure of central tendency, and shifted in a similar manner after marijuana administration. The data are consistent with other studies on the effects of marijuana on time estimation.
