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A test that measures the level of activity in the cerebral cortex
of the brain by recording brain waves through electrodes placed
on the scalp


A test that measures muscle tone that is affected with REM


A test that measures eye movements that are specific to REM
or NREM sleep patterns

pulse oximeter

A machine used in pulse oximetry that calibrates the percentage
of oxygen saturation in the body

pulse oximetry

Diagnostic testing that measures oxygen saturation in the

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Voice Recording