PSYCH257 Chapter Notes - Chapter 8: Fatal Familial Insomnia, Sleep Deprivation, Actigraphy

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH257
• Professor: Pamela Seeds

Document Summary

Stage 1 (wakefulness into drowsiness and then sleep) Drift in and out of awareness of his/her surroundings. Sleep deprivation may have some antidepressant effects (on already. When awoken, say they were dozing or thinking . Stage 4 (very deep sleep depressed people) But may bring depression among non-depressed people. Complaints of quality of sleep (not feeling refreshed) Clearest + most comprehensive picture of your sleep habits. Alternative (actigraph records number of arm movements, less costly, useful in insomnia treatment studies) Sleep efficiency (se, the % of time actually spent asleep) Amount of time sleeping divided by amount of time in bed. Total lack of sleep eventually leads to death. Interrupted sleep causes anxiety (leads to repeated alcohol use) Insomnia accompanies (pain, physical discomfort, physical inactivity during the day, respiratory problems) Delayed temperature rhythm (body temperature doesn"t drop until later at night) Periodic limb movement disorder (excessive jerky leg movements) Drug use, changes in light, noises, temperature.