Answer to Question 1
ANS: C
The distinction between stage 3 and stage 4 is usually found in the presence of large delta waves, or slow waves. At the beginning of stage 3, delta waves constitute 20 to 50 of the electroen-cephalogram. Stage 4 is identified by the presence of the delta waves for at least 50 of the electroencephalogra m recording.
Answer to Question 2
ANS: D
The deepest stages of non-REM sleep (stages 3 and 4) are referred to as slow-wave sleep because of the presence of large delta waves that appear when the sleeper enters these stages.
The tone of the nurse-patient introduction sets the stage for the patient interview and patient care
Melatonin and sleep
These illustrations show Ellen Craft, a slave with and without a disguise. She dressed “as a disting
Mean scores for Erikson’s stage VI (Intimacy) for two cohorts. Scores for both cohorts increase ...
Fetal Stage
Illustration of the anatomy of a normal subject (A) and a patient with sleep apnea (B)