methamphetamine (ma) is a potent, addictive psychostimulant that has dramatic effects on the central nervous system (cns). the onset of methamphetamine use has been linked to heightened attention, and chronic methamphetamine use has been associated with deficits in different aspects of attention that can significantly persist into abstinence. attention deficits in chronic methamphetamine users ...

background: schizophrenia is a psychiatric disorder that impairs several intellectual functions, including attention processes.   objectives: to investigate attention deficit in a group of patients with schizophrenia.   method: thirty patients with schizophrenia hospitalized in three psychiatric wards in shiraz and isfahan and 30 normal healthy subjects matched for age, gender and years of educ...