Describe the sleep-wake cycle, including key factors such as REM and NREM stages, brain wave patterns, and the typical characteristics or behaviors for each stage. (ESSAY) (PSYCHOLOGY) plz help I will give brainliest!!!!!!!!!!!!!!
Answers
Answer:
REM Sleep
Approx 20-25% of sleep time is spent in REM
(adults)
• Rapid bursts of eye movement, during which the
eyeballs move around under closed eyelids
• Most dreaming occurs during REM sleep
• REM sleep periods lengthen and occur closer
together as the night goes on
• Brain waves during REM sleep are fast and
irregular, and are similar to beta brain waves
Paradoxical sleep
Internal active
- Heart/ breathing rate faster than
NREM, blood pressure rises
External relaxed
- Sleeper appear completely
relaxed externally
NREM Sleep
NREM sleep makes up approximately 75-80% of our total sleep time (for adults).
There are four stages of NREM sleep:
Stage 1 - When we drift into true sleep
- Decrease in heart/breathing rate, muscle tension and body temp
- Alpha and theta brain waves
Stage 2 - Lasts for 10-25 minutes in the first ultradian rhythm/sleep cycle
- Lengthens with each successive cycle
- Theta brain waves
- Sleep spindles (brief burst of rapid brain waves) and K Complex’s
(burst of high amplitude waves may occur (not on study design)
Stage 3 - The start of deep sleep
- Heart rate, body temperature and blood pressure continue to drop
- People are difficult to wake
- Mix of theta and delta waves
Stage 4 - Deepest stage of sleep
- People are hardest to wake (highest ‘arousal threshold’)
- Muscles completely relax and there is very little movement
- Delta waves are predominant (over 50%)
you might also want to check out circadian rhythms and ultradian rhythms.
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