HLTH 102 Lecture Notes - Lecture 8: Sleep Deprivation, Hypertension, Sleep Debt

• School: Queen's University
• Department: Health Studies
• Course: HLTH 102
• Professor: Freeman Woolnough

Document Summary

Hlth week 8: circadian rhythm: 24 hrs cycle by which you ae accustomed to habitual behaviors including going to sleep and waking up. Responds to light and darkness in environment: rem vs non-rem sleep. Rapid eye movement (rem) sleep: brain activity similar to when you are awake (waves and energy use, dreaming occurs: all muscles relaxed except tiny eye muscle and respiratory muscles, 25% of night. Biological factor: delay in melatonin secretion as you get older, increased sleep latency social cultural --- different contextual demands, high school start times, increasing academic demands, expanding social opportunities, decreasing parental influence tips for helping sleep. Establishing regular sleep/wake times limiting technology use at bedtime. Avoiding late afternoon/evening physical, cognitive and social stimulation: electronic media use increase physiological and mental arousal, make it more difficult to fall asleep screen exposure decrease slow-wave sleep, rem sleep and sleep efficiency. Bright light of screens suppresses melatonin secretion, which may delay sleep onset: nutrition: tryptophan.