NROC61H3 Lecture Notes - Lecture 11: Cortisol, Sleep Disorder, Ghrelin
Document Summary
Lec11 sleep and wakefulness: will not be tested on content of pages 590-593 sleep. 2. reversible state: always do wake up, state that is characterized by a reduced responsiveness to the environment, spend 30% of our lives sleeping. 6. functional significance: sleep issues, prevalent medical problem, sleep deprivation a. is it about amount of sleep or quality of sleep, only occurs in higher vertebrate, exception* sleep in invertebrates. 1. invertebrates display modes of sleep: disruption of sleep in these invertebrates. 1. identify at least 5 different stages of sleep: rem sleep, non-rem sleep, stage 1, stage 2, stage 3, stage 4. 1. think of each cycle as going through the whole complete cycle of being awake and ending with rem: every 90-100 minutes of sleep, ultradian rhythms different from circadian rhythms. 1. reduced sleep in deep stages: missing stage 4 sleeps alltogether, shorter rem sleep physiological changes during sleep.
