Which observation is used to identify REM sleep during a sleep study, as reflected in bio calibration and testing procedures?

Which observation is used to identify REM sleep during a sleep study, as reflected in bio calibration and testing procedures?

• A. Eye movements in REM sleep
• B. Chin EMG bursts
• C. K-complexes in N2
• D. Theta waves in wakefulness

Answer: (A)

REM sleep is identified by rapid eye movements detected on the electro-oculography (EOG) channels. In bio calibration and testing procedures, these brisk eye movements provide the observable sign used to mark REM periods. While REM also features very low chin EMG tone (atonia), the practical cue technicians rely on is the presence of rapid eye movements. K-complexes belong to N2 sleep, and theta activity is more typical of wakefulness or light sleep, not the defining feature of REM.

REM sleep is identified by rapid eye movements detected on the electro-oculography (EOG) channels. In bio calibration and testing procedures, these brisk eye movements provide the observable sign used to mark REM periods. While REM also features very low chin EMG tone (atonia), the practical cue technicians rely on is the presence of rapid eye movements. K-complexes belong to N2 sleep, and theta activity is more typical of wakefulness or light sleep, not the defining feature of REM.