The Sleep Cycle
- Created by: poppystamp
- Created on: 21-03-19 13:10
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The Sleep Cycle
There are four stages of sleep, and REM sleep forms a fifth stage.
NREM sleep- Stages 1-4
REM sleep- Stage 5
The Cycle Pattern-
Each stage lasts roughly 5 to 15 minutes, and a cycle takes roughly 90 minutes. There are 4 or 5 cycles a night. We go first from Stage One to Stage Four, then a repetition of stages and REM sleep. Each cycle increases in REM length, and decreases in stages 3/4 of deep sleep.
Electroencephalogram (EEG)- A piece of technology that is used by placing electrodes on your head and recording brain waves and activity- this tells us what stage someone is at.
Sleep Spindles- sudden high frequency bursts of neural activity- cause is unknown. 0.5 seconds roughly.
K Complexes- Larger…
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