Psychological and neurocognitive studies have suggested that different kinds of self-control may share a common psychobiological component. If this is true, performance in affective and nonaffective inhibitory control tasks in the same individuals should be correlated and should rely upon integrity of this region. To test this hypothesis, we acquired high-resolution magnetic resonance images fr...

* Corresponding Author: Zahra Alam Mehrjerdi, MA., Neurocognitive laboratory of Iranian National Center for Addiction Studies (INCAS), Tehran University of Medical Sciences. Address: No.669, South Karegar Ave, Tehran, 1336616357, Iran, Tel/Fax +982155421177. Email: [email protected] Methamphetamine (MA) is a highly addictive psychostimulant drug with crucial impacts on individuals on variou...

CONTEXT Methamphetamine is associated with psychotic phenomena, but it is not clear to what extent this relationship is due to premorbid psychosis among people who use the drug. OBJECTIVE To determine the change in the probability of psychotic symptoms occurring during periods of methamphetamine use. DESIGN Longitudinal prospective cohort study. A fixed-effects analysis of longitudinal pane...

Dr. Rawson is Adjunct Associate Professor, Department of Medicine (Psychiatry) at the Semel Institute for Neuroscience and Human Behavior at the David School of Medicine, University of California Los Angeles (UCLA); and Associate Director of the UCLA Integrated Substance Abuse Programs, Los Angeles. Rachel Gonzales is a Pre-doctoral Candidate, UCLA School of Public Health; and Research Analyst ...

AIMS To determine whether violent behaviour increases during periods of methamphetamine use and whether this is due to methamphetamine-induced psychotic symptoms. DESIGN A fixed-effects (within-subject) analysis of four non-contiguous 1-month observation periods from a longitudinal prospective cohort study. SETTING Sydney and Brisbane, Australia. PARTICIPANTS A total of 278 participants a...

BACKGROUND: Predictors of relapse to methamphetamine use are poorly understood. State variables may play an important role in relapse, but they have been difficult to measure at frequent intervals in outpatients. METHODS: We conducted a feasibility study of the use of cellular telephones to collect state variable data from outpatients. Six subjects in treatment for methamphetamine dependence w...