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Unformatted text preview: actually do (psychological) • Alcohol – inhibitor, but still releases excitatory transmitters such as dopamine and serotonin • Drug laws and schedules are politically and environmentally-based, not so much pharmacologically-based • Addiction often “hijacks” brain chemistry • Neuroplasticity: brain can rewire itself. Brain atrophy: drugs and genetics tend to lessen this neuroplasticity slightly o When discontinuing drug abuse, brain tends to rewire itself better again • Factors Affecting Physiological Dependence o Psychological dependence sometimes greater than physical dependence (most drugs affect both) o Alcohol withdrawal can potentially kill you (often from the seizures). Heroin withdrawal however, cannot kill you...
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This note was uploaded on 01/25/2011 for the course ESS 20305 taught by Professor Powell during the Winter '10 term at UCSB.
- Winter '10