PSYO 2470 Lecture Notes - Lecture 12: Acetylcholine, Nitric Oxide, Reticular Formation
2 May 2017
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Document Summary
Characterized by reduced responsiveness and interaction with the environment. Humans spend ~1/3 of our lives sleeping: lots of variation, species differences in how animals sleep, all, however, have a period of rest. Low voltage, low peaks in waves: high frequency waves, sensation. Sensations vivid and externally generated: generated in response to change in environment, thoughts. Non-rem: eeg, high voltage, slow waves. Sensations are vivid but internally generated: not related to external environment, thoughts. Illogical, non-linear progression: muscle paralysis, very low electrical activity in muscles, movement actively inhibited, active brain and immovable body. Increase during rem: penile erection during rem sleep. Is(cid:374)"t tied to se(cid:454)ual co(cid:374)te(cid:374)t of drea(cid:373)s: stage 4, delta waves. Long, slow waves: difficult to wake up. Awake: mostly alpha rhythms, some beta and gamma. Stage 2: spindles and k complexes, first stage of true sleep. Slow, high altitude waves: slow wave sleep.
