PSYC 1101 Lecture Notes - Lecture 11: Anandamide, Methadone, Alprazolam
15 Sep 2016
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Chemicals that influence consciousness or behavior by altering the brain"s chemical message systems. Drug tolerance: tendency for larger doses of a drug to be required over time to achieve the same effect. Physical dependence: withdrawal symptoms may occur if a person suddenly stops taking the drug. These symptoms can sometimes include pain, convulsions and/or hallucinations: alcohol withdrawal is the one withdrawal that could be deadly. Psychological dependence: a strong desire to return to the drug even without physical withdrawal symptoms. Anhedonia: the absence of pleasure, the inability to experience pleasure (could happen to cocaine addicts in withdrawal) Don"t need to know, just as a reference. Substances that reduce activity of the central nervous system. Most depressants work by increasing the activity of gaba: will reduce action potential firing, procude inhibition. Alcohol, barbiturates, benzodiazepines and toxic inhalants are all examples of central depressants. Effects are additive: mixing drugs interact in unpredictable ways.
