HLTH 102 Lecture Notes - Lecture 18: Circadian Rhythm, Sleep Debt, Sleep Hygiene
12 Oct 2016
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Document Summary
Sleep processes: circadian rhythm, non-rem vs. rem sleep, sleep cycles. Importance of sleep: link between sleep and health, sleep deprivation. Sleep needs: sleep debt, evidence for adolescences" sleep hygiene practices. Circadian rhythm: 24-hour cycle by which you are accustomed to habitual behaviors (including going to sleep and waking up) Hypothalamus and pineal body keep cyclical rhythm: melatonin (increases drowsiness, responds to light and darkness in environment. First couple of hours we are asleep but then our sleep need increases to a point where we put ourselves to sleep. Around 3 o"clock there is something in your body that makes you want to sleep with a release of hormones. What body processes are controlled by your circadian rhythm: easting, sleeping, mating, bowl movement, hormone secretion, circadian = essentially a 24-hour clock. What happens in our body in the evening when light diminishes: organs shift into low gear, our hormones decrease and you start to feel that you need to sleep.
