Your brain waves are measured.
Your sleep cannot be measured in mcm.
Sleep latency-- The amount of time that it takes to fall asleep. Sleep latency is measured in minutes and is important in diagnosing depression.
Sleep stages are defined in terms of brainwave patterns, which can be measured by an electroencephalograph (EEG).
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tens
for adults like 7 to 8 while teenagers 8 to 9 and infants about 16 hours of sleep a week
Important parts of the polysomnography study include measurements of: heart rate. airflow at the mouth and nose. respiratory effort. sleep stage (light sleep, deep sleep, dream sleep, etc.). oxygen level in the blood,using a.(ear oximetry).
Blood pressure is also measured: sometimes episodes of sleep apnea can dangerously elevate blood pressure.
From a perspective of energy conservation, one function of sleep is to replenish brain glycogen levels, which fall during the waking hours. In keeping with this idea, humans and many other animals sleep at night. ... As might be expected, human metabolism measured by oxygen consumption decreases during sleep.