Article: Stages Of Sleep And Dreams
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Stages Of Sleep And Dreams
When it comes to sleep, the longer you stay awake, the longer you sleep. The amount of sleep a person needs is determined by the Circadian system or the body?s internal clock. Reduction in blood pressure and heart rate are two processes that sleep induces.
The two basic distinctions that apply to sleep are NREM or non-rapid eye movement and REM or rapid eye movement. In the duration of one night they occur as a 90-minute cycle, repeating up to six times for the duration of the night in all four stages of NREM and REM. REM results from NREM.
Sleep Cycle
Four stages in a duration of almost 90-120 minutes makes one sleep cycle. Dreams are common to all stages with the most vivid and memorable in the last stage, the common term for which is REM sleep. The s...
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