PY 105 Lecture Notes - Lecture 5: Psychoactive Drug, Psychedelic Drug, Reuptake
Chapter 5 notes, Drugs
ā¢ Psychoactive drug
o Substance capable of influencing perception, mood, cognition,
or behavior
āŖ Types
ā¢ Stimulants
ā¢ Depressants
ā¢ Opiates
ā¢ Psychedelic drugs
o Cocaine is an agonist for dopamine
o Tranquilizers are agonists for GABA
o Alcohol is an agonist for GABA
ā¢ Cocaiī
¶eās effect on the brain
o Blocks the rains reuptake of dopamine and norepinephrine,
raising levels of these neurotransmitters
o Results in over-stimulation of certain brain circuits and a brief
euphoric high
o When drug wears off, depletion of dopamine may cause a crash
ā¢ Psychology of drug effects
o Reactions to psychoactive drugs depend on several factors
āŖ Physical factors such as body weight, metabolism, initial
state of emotional arousal, and physical tolerance
āŖ The number of times a person has used the drug
āŖ Environmental factors such as where and with whom uses
the drug
āŖ Mental set of expectations of a drugās effects
ā¢ Hypnosis
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