PSY100H1 Final: Study Notes on SLEEP - Date not accurate
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PSY100H1 Full Course Notes
Verified Note
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Document Summary
Many areas of the brain are more active during sleep than during wakefulness. the conscious experience of the outside world is turned off . sleep is an altered state of consciousness: the brain processes information during sleep. About spatial surroundings etc: there are different psychophysiological states during sleep, and these occur in a cycle. [alert wakefulness]: beta waves: v. short, frequent, desynchronized waves. [just before sleep]: alpha waves: less short, more synchronized, stage 1: theta waves. Can be easily aroused, may not be aware of having been asleep. One may see fantastical images or have the sensation of falling etc: stage 2, sleep spindles: occasional bursts of mental activity, k-complexes: waves with high amplitude (large waves) More regular breathing, less sensitive to external stimuli: stage 3 & 4: delta waves, slow-wave sleep deep, slow, high waves. Difficult to awaken people in these stages, it is disorienting when they are woken up.
