PSY 1101 Midterm: Revision 4 (sleep) (All you need to know for midterms)

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: Kenneth Campbell

Document Summary

Consciousness as a state (wake & sleep states) What clock controls the rhythmic sleeping cycle. [majorly used to measure diferent stages of sleep] How does an experimenter know if a subject is conscious? (sleep onset: how is consciousness measured?) Eeg & arousal (consciousness) [number of peaks per second = hz] Beta (awake and alert): high frequency 15 hz+, low amplitude eeg. Theta (light sleep-drowsiness): 4-7 hz [start losing muscle tonicity] Delta (deep sleep; coma): low frequency 1-4 hz, high amplitude eeg. Circadian: every 24 hours (e. g. sleep-wake cycle of adults) Ultradian: within 24 hours (e. g. babies" eaing cycle) In human adults, sleep is a circadian rhythm. The onset and ofset of sleep is largely biological controlled by the detecion of light-dark. Human"s 24 hour sleep schedule regulated by the light-dark cycle. The suprachiasmaic nucleus (scn) detects lightness-darkness, which is a group of nuclei in the inferior region of hypothalamus,