PSYCH 111 Lecture Notes - Lecture 5: Circadian Rhythm, Inattentional Blindness, Delta Wave
Document Summary
As morning comes, our temperature rises, and begins to drop as day moves to night: the circadian cycle happens to other mammals and animals as well, sleep stages, nrem-1 (non-rem 1): slowed breathing and irregular brain waves. May experience hallucinations or sensory stimulus, and a sensation of falling: nrem-2: sleep spindles: brain experiences bursts of rapid, rhythmic brain-wave activities, nrem-3: slow delta waves that last about 30 minutes, and hard to wake. At this stage, children may wet the bed: rem (rapid eye movement): ascend to a lower level of sleep (nrem-2), and your heart-rate rises, feel like your awake, and dive into dreams. Genitals become aroused during rem, regardless of whether the dream was sexual. We adapt ourselves to hide in safe areas to protect ourselves from the dangers at night, of which we can"t see: sleep helps us recuperate: restore and repair brain tissue. Mammals burn a lot of calories, producing substances that hurt neurons.
