PSYCH257 Lecture Notes - Substance Dependence, Depressant, Substance Abuse
25 Mar 2013
School
Department
Course
Professor
Document Summary
*problems related to the use and abuse of psychoactive substances. Dsm-iv-tr: three or more of the following occurring at any time during a within a 12 month period: *taken in larger quantities or over a longer period than intended. *great deal of time spent trying to acquire the substance. *important social, occupational, or recreational activities are given up or reduced because of substance use. Increasing amount of substance necessary for the same high. *depressants result in behavioural sedation (e. g. , alcohol, sedative, anxiolytic drugs) caffeine) *stimulants increase alertness and elevate mood (e. g. , cocaine, nicotine, *opiates primarily produce analgesia and euphoria; pain reduction (e. g. , heroin, morphine, codeine) *hallucinogens alter sensory perception (e. g. , marijuana, lsd) *other drugs of abuse include inhalants, anabolic steroids, medications. *influences several neurotransmitter systems, but mainly gaba (affects anxiety rate) *weight light people are more responsive than heavy. *sex females are more responsive than males. *younger age at onset started drinking earlier.
