01:830:101 Lecture 7: Sleep and Dreams
9 Oct 2018
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Document Summary
Gets darker scn tells pineal gland to secrete melatonin. Gets lighter scn tells pineal gland to stop secreting melatonin. Depression that occurs during winter months- less light. Non-dreaming sleep (3 stages: similar to drowsiness (stage 1, hypnic or hypnagogic jerk, hypnagogic hallucinations. (professor"s son example- getting him to his bed and not remembering how he. If someone is awaken in stage 3- often disoriented or confused got there in the morning) Heart rate, blood pressure, breathing - rapid or irregular. (sleeping pills- disrupt rem) - not melatonin. Measured average amount of sleep per night. Amount of sleep correlated with development of cold symptoms. (over 8 hours of sleep- body can fight off the virus easily) (less than 8 hours of sleep- body less likely to fight it off) Selective deprivation of stage 3 / 4 muscle and joint pain. Not out and vulnerable to predators in the dark. Different neurons signaling- keeps our minds fresh.
