Psychology 1000 Lecture Notes - Lecture 15: Sleep Paralysis, Sleep Deprivation, Heart Rate
11 Dec 2018
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Discussion #2 may start tomorrow
Will be due Sunday November 18
Last discussion of the semester
Early birds vs night owls
- Morning people go to bed earlier, wake up earlier
- Alertness peak earlier in the day
- Perform better in morning classes
- Night people go to bed later, wake up later
- Alertness peak later in the day
- Perform better in evening classes
Stages of sleep
- Stage 1
- Light sleep
- May experience ‘body jerks’
- Stage 2
- Sleep deepens
- Muscles more relaxed
- Harder to awaken
- Sleep spindles
- Longer, closer together wavelengths
- Stage 3
- Sleep deepens
- Delta waves
- Distinct, long, and slow wavelengths
- Stage 4
- Delta waves dominate pattern
- Stages 3-4 = slow-wave sleep
- REM sleep
- Rapid Eye Movement
- REM wavelengths are similar to those of someone that is awake/alert because of
dreaming
- High arousal
- Heart rate, breathing, brain wave activity
- REM sleep paralysis
- Difficult for voluntary muscles to contract
- Frequent dreaming
- Cycle through the stages of sleep 4-5 times throughout the night
- If REM sleep deficient, body will speed through the first 4 stages to get to REM sleep
stage to try to recover from deficiency
Sleep deprivation
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Document Summary
Morning people go to bed earlier, wake up earlier. Night people go to bed later, wake up later. Rem wavelengths are similar to those of someone that is awake/alert because of dreaming. Cycle through the stages of sleep 4-5 times throughout the night. If rem sleep deficient, body will speed through the first 4 stages to get to rem sleep stage to try to recover from deficiency. Pilcher and bradley (1996) studied sleep deprivation. Short-term sleep deprived (up to 45 hours) Long-term sleep deprived (more than 45 hours) Partial deprivation (no more than 5 hours a night for 1+ consecutive nights) Recorded responses on mood, mental tasks, physical tasks. Most sleep deprived performed the worst on tasks, worse mood. Surprisingly, people who performed the worst felt that they were doing. People underestimate negative impact sleep deprivation has on abilities well. Chronic difficulty in falling asleep, staying asleep, experiencing restful sleep. Most common sleep disorder affecting 10-40% of population.
