Psychology 2030A/B Chapter Notes - Chapter 9: Amatol, Nasal Congestion, Nicotine Patch

• School: Western University
• Department: Psychology
• Course: Psychology 2030A/B
• Professor: Ian Nicholson

Document Summary

Including tolerance and withdrawal: dsm-5 categorizes substance abuse and substance dependence as one disorder: substance use disorder, 2 or more symptoms must be present to meet criteria (rather than just 1 for each in dsm-iv) Commonly used (cid:498)licit(cid:499) drugs: three legal psychoactive drugs we focus on the most are caffeine, alcohol, and nicotine. 3: neurotransmitters: adenosine and serotonin may be involved in its effect on the brain, stays in the bloodstream for a long time (long half-life) Functional impairment: leads to tolerance and dependence, the first cigarette of the day is the hardest to give up because withdrawal kicks in overnight, withdrawal can last a month or more, making quitting difficult. In the past few decades the number of people who smoke has declined dramatically. Epidemiology: most commonly used illicit substance in canada. Interferes with reuptake of serotonin: crystal methamphetamine more intense reactions than powder form (can last for 12 hours)