RT Journal Article
SR Electronic
T1 Time perception deficits and its dose-dependent effect in methamphetamine dependents with short-term abstinence
JF Science Advances
JO Sci Adv
FD American Association for the Advancement of Science
SP eaax6916
DO 10.1126/sciadv.aax6916
VO 5
IS 10
A1 Zhang, Mingming
A1 Zhao, Di
A1 Zhang, Zhao
A1 Cao, Xinyu
A1 Yin, Lu
A1 Liu, Yi
A1 Yuan, Ti-Fei
A1 Luo, Wenbo
YR 2019
UL http://advances.sciencemag.org/content/5/10/eaax6916.abstract
AB Intake of addictive substances acutely modifies dopaminergic transmission in the striatum and prefrontal cortex, which is the neural substrate underlying time processing. However, the persistent effects of methamphetamine (meth) abuse (e.g., during abstinence) on temporal processing have not been fully elucidated. Here, we recruited different samples in two experiments. We first compared the potential differences in motor timing between healthy controls and meth dependents with varied length of abstinence and then examined the ability of perceptual timing between the healthy subjects and the meth group at short abstinence. We found that motor timing, but not perceptual timing, was altered in meth dependents, which persisted for at least 3 months of abstinence. Dose-dependent effects on time perception were only observed when short-term abstinent meth abusers processed long time intervals. We conclude that time perception alteration in meth dependents is task specific and dose dependent.