PSY 1101 Lecture Notes - Lecture 5: Storage (Memory), Hypothalamus, Cataplexy

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

Document Summary

Natural sleep: the loss of consciousness: define what is sleep, how is sleep defined, sleep is not unique. In humans, sleep is a circadian rhythm. The onset/offset of sleep is largely biological, controlled by the detection of light dark. Pineal gland: releases melatonin under control of superchiasmatic nucleus. Mainly released during the night (in the absence of light) We normally sleep and awaken once every 24 hours. Humans would sleep about one hour later every day (sleep at 11 pm, then 12am, then. 1 am: natural sleep rhythm is a 25 hour cycle. How would wake/sleep cycle be affected if . The optic track after the thalamus is severed (thalamo-cortical track) Other physical activity: respiration, heartbeat, body temperature. In order to sleep, one cannot be conscious of the external environment. Process of stimulus to the cortex must be inhibited. Sleep onset: how is consciousness measured: overt behaviour. Beta( awake and alert) high frequency 15 hz+, low amplitude eeg.