Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
Which of the following is NOT a stage of sleep?
A
REM sleep
B
NREM Stage 3
C
Alert wakefulness
D
NREM Stage 2
Verified step by step guidance
1
Step 1: Understand the concept of sleep stages. Sleep is generally divided into two main types: REM (Rapid Eye Movement) sleep and NREM (Non-Rapid Eye Movement) sleep.
Step 2: Recognize that NREM sleep is further divided into stages, commonly Stage 1, Stage 2, and Stage 3, with Stage 3 being the deepest sleep stage.
Step 3: Identify that REM sleep is a distinct stage characterized by rapid eye movements and vivid dreaming.
Step 4: Note that 'Alert wakefulness' is not a stage of sleep but rather a state of being awake and alert, which is separate from the sleep cycle.
Step 5: Conclude that among the options given, 'Alert wakefulness' is NOT a stage of sleep, while REM sleep and NREM stages 2 and 3 are recognized stages.