PSYCH101 Lecture Notes - Lecture 9: Delta Wave, Ecological Niche, Sleep Spindle

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH101
• Professor: Martha Savage

Document Summary

Alpha waves the relatively slow brain waves of a relaxed, awake state. Delta waves the large, slow brain waves associated with deep sleep. Slowed breathing and irregular brain waves rapid. Characterized by the period appearances of sleep spindles bursts or rapid, rhythmic brain- wave activity. After stage 4, rather than continuing into deeper sleep, you ascend from your initial sleep dive returning through stage 3 and 2 and then enter rem sleep. Why do we sleep: protection (species" sleep pattern tends to suit its ecological niche, recuperation (restore and repair tissue, making memories, feeds creative thinking, may play a role in growth process. Sigmund freud manifest content- storyline of our dreams, incorporates traces of previous days" nonsexual experiences and preoccupations. Why we dream: to satisfy our own wishes. Sigmund freud latent content consists of unconscious drives and wishes that would be threatening if expressed directly: to file away memories, to develop and preserve neural pathways.