List the stages of the sleep cycle and explain why they differ
Answer:
Different stages of sleep cycle.
• Stage one Sleep: It contains condition of
hallucinations. In this stage one may observe falling or floating
type sensations.It is also known as sensations of hypnagogic.
• Stage second Sleep: In it we feel spindles of
sleep on EEG which shows the activity of brain.
• Stage third & four Sleep: In this stage Delta
waves found. If we woken here ,we become confused &
disoriented.
• Stage five : In this stage REM rapid eye movement
occurs.
Each cycle lasts from 90 to 115 minutes.and every stage contains 5
to 15 minutes.
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