AP PSYCHOLOGY

STATES OF CONSCIOUSNESS

SLEEP DISORDERS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The five basic stages of sleep are further classified into two distinct orders characterized by
A
body temperature
B
breathing rates.
C
rapid vs. non-rapid eye movement
D
the ability of the sleeper to quickly respond to stimulus
Explanation: 

Detailed explanation-1: -The human body cycles through two phases of sleep, (1) rapid eye movement (REM) and (2) non-rapid eye movement (NREM) sleep, which is further divided into three stages, N1-N3. Each phase and stage of sleep includes variations in muscle tone, brain wave patterns, and eye movements.

Detailed explanation-2: -Rapid eye movement (REM) sleep, or stage R, usually starts about 90 minutes after you fall asleep. Brain activity increases, your eyes dart around quickly, and your pulse, blood pressure, and breathing speed up. This is also when you do most of your dreaming. REM sleep is important for learning and memory.

Detailed explanation-3: -Sleep is a period of reduced activity. Sleep is associated with a typical posture, such as lying down with eyes closed in humans. Sleep results in a decreased responsiveness to external stimuli.

Detailed explanation-4: -Sleep can be broadly segmented into rapid eye movement (REM) sleep and non-REM (NREM) sleep. Most adults will enter sleep from the drowsy state into NREM sleep. NREM sleep is divided into three sub-stages: stage N1, stage N2, and stage N3. Older classification had four stages of NREM sleep.

Detailed explanation-5: -There are two basic types of sleep: rapid eye movement (REM) sleep and non-REM sleep (which has three different stages). Each is linked to specific brain waves and neuronal activity.

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