title: Sleep impairment in ecstasy/polydrug and cannabis-only users.
abstract: The present study investigated aspects of sleep quality in ecstasy and cannabis users. Two-hundred and twenty seven participants (117 ecstasy/polydrug users, 53 cannabis users and 57 drug naive participants) took part. The participants completed measures of daytime sleepiness, and indicators of sleep quality. The results demonstrated that ecstasy/polydrug users viewed themselves as being more evening types and having poorer sleep quality than cannabis users and drug naive participants. They were also more likely to have missed a night's sleep. The reported differences in sleep type may reflect ecstasy-related serotonergic dysfunction resulting in problems with shifting circadian rhythms.
authors.affiliation: School of Psychology, University of Central Lancashire, Preston PR1 2HE, United Kingdom. jfisk@uclan.ac.uk
authors.forename: John E
authors.initials: JE
authors.lastname: Fisk
authors.forename: Catharine
authors.initials: C
authors.lastname: Montgomery
mesh_terms: D000661:Amphetamine / Q000009:adverse effects; D003042:Cocaine / Q000009:adverse effects; D003071:Cognition / Q000187:drug effects; D005260:Female; D006801:Humans; D008297:Male; D008385:Marijuana Smoking / Q000009:adverse effects*; D018817:N-Methyl-3,4-methylenedioxyamphetamine / Q000009:adverse effects*; D011597:Psychomotor Performance / Q000187:drug effects; D007319:Sleep Initiation and Maintenance Disorders / Q000139:chemically induced*; D055815:Young Adult
chemical_list: D000661:Amphetamine; D003042:Cocaine; D018817:N-Methyl-3,4-methylenedioxyamphetamine