PSY 100 Lecture Notes - Lecture 17: Caffeine, Depressant, Hypnagogia
14 Oct 2016
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Waking consciousness - thoughts, feelings, sensations are clear. Altered state - shift in quality or pattern of mental activity. Ex: hypnosis, meditation, the effects of psychoactive drugs a. Tiny section of the brain influences glandular system. Suprachiasmatic nucleus internal clock deep within hypothalamus tells people to wake up and fall asleep. Brief drifts into sleep lasting only a few seconds. Sleep loss that impairs concentration and results in irritability a. Eyes moving under eyelids rest of body is still. 90% of dreaming occurs in this stage. Brief activity bursts lasting a few seconds. N3 (r&k stages 3 and 4): delta waves pronounced (50% of waves or more are delta) The failure of stopping voluntary muscles from moving. Allows person to move around or get up and act out nightmares. Moving or walking around during deep sleep. Person experiences extreme fear and screams or runs during deep. Person falls immediately into rem sleep during the day without warning.
