PSYCH 230 Lecture 10: Action Patterns
Document Summary
Impact seen after cortical damage: lose lots of capacities. In humans, not in most organisms: effect of decortication, human vegetable vs normal rate, removal of cortex, top layer and all bottom five layers will die, mouse will grow it back, behave normally. A: action morphology: elementary units, reflex, oscillator, servomechanism, within-category combinations, reflect chains, fixed action patterns (faps, goals, across-category combinations, real actions, hierarchical organization. B: brain systems of action: pyramidal motor system, motor cortex and cortex and corticospinal tract, fine finger movements, coordination by sensory feedback. Build grass mound to keep eggs dried: sometimes eggs leave nest accidentally, triggered by sight of egg no longer guided by sight of egg. If (cid:374)ot she (cid:449)o(cid:374)"t (cid:272)opulate (cid:449)he(cid:374) he gra(cid:271)s her: hierarchical inhibition. Extrapyramidal motor system: everything else, red nucleus, works closely with pyramidal system, known: pyramidal lesion still grasp, difficulties making movements.
