PSY 315 Lecture Notes - Lecture 13: Fetus, Procaine, Stomach
Document Summary
Stimulants | stimulate behavior, cause arousal, ease depression, induce euphoria, increase alertness. Right and left-handed forms (d- and l- optical mirror images, dl- (bexedrine), and methylated dl-amphetamine: d-amphetamine - dexedrine. Absorbed quickly orally (30 min, peak at 2-3 hours: abusers use iv mainlining takes 5 minutes. Ability to counteract effects of cns depressants. Release newly-synthesized catecholamines (da, ne) from presynaptic terminals: release larger qualities than usual, block catecholamine re-uptake. Resemble ne structure attach, directly stimulate receptors. Cocaine predominantly blocks catecholamine re-uptake, whereas amphetamine releases them from presynaptic terminals also. Mental alertness/arousal (5-25mg dose: stimulate reticular formation, ne boost. Improves mental performance on simple tasks rebound effect of prolonged sleep, overarousal: euphoria/elation abuse. Anorexic - suppresses appetite (hypothalamus) stimulate satiety-stimulating neurons. Stimulates respiratory center in medulla no effect on breathing rate/volume. Sympathomimetic response mimics sympathetic reaction induces state of panic/anxiety lungs broaden, pupils dilate, emergency mode. Agitation, confusion, palpitations, tremors, headache, delirium, insomnia.
