PSYC 100A Lecture Notes - Lecture 9: Reuptake, Chemical Substance, Psychological Dependence

• School: University of Victoria
• Department: Psychology
• Course: PSYC 100A
• Professor: Fitzgerald Laurie

Document Summary

Psychoactive drug: a non-nutritive chemical substance that alters perceptions and mood (affects consciousness) and behaviours. Drug effects : agonistic ex: heroin/morphine produce euphoric like actions, antagonistic, disruption of re-uptake mechanism, disruption of synthesis or degradation of neurotransmitters (increase the levels of neurotransmitters in the synaptic space, leakage. Occurs as a result of repeated use/administrations of drug. State of decreased effectiveness and/or need to increased dosage for same drug. Varies as a function of drug effects. Compulsive use of drugs despite adverse consequences.