PSY 150A1 Lecture Notes - Lecture 5: Alpha Wave, Motor Cortex, Behaviorism

• School: University of Arizona
• Department: Psychology Main
• Course: PSY 150A1
• Professor: Adam Lazarewicz

Document Summary

Cons(cid:272)iousness: person"s a(cid:449)areness of his/her o(cid:449)n e(cid:454)isten(cid:272)e, sensations, cognitions & environment. Early psychology all about consciousness: then came behaviorism (consciousness like a speedometer) Conscious vs unconscious: sergent & dehaene: certain threshold of brain activity = consciousness, consciousness emerges from many individual brain events (musical cord analogy) Sleep: restorative theory: helps body recover from wear and tear (energy, evolutionary theory: keeps people out of trouble at night, cognitive theory: helps consolidate memories. Stages of sleep: brain doesn"t turn off during sleep, sleep not a single state, but several different stages (accidental. Eeg discovery: alpha waves: relatively slow brain waves of a relaxed, awake state, stage 1 sleep: 5 minutes, transition from wakefulness to sleep. Theta waves: stage 1 waves (less regular, lower frequency) Flashing lights/geometric patterns, falling/floating sensations, hypnic jerks. Easily awakened from stage 1, would likely report you (cid:449)eren"t asleep: stage 2 sleep: about 20 minutes.