AP PSYCHOLOGY

BIOLOGICAL BASES OF BEHAVIOR

BIOLOGY OF CONSCIOUSNESS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Carrie’s EEG shows Theta Waves. Which stage is she in?
A
NREM 1
B
NREM 2
C
NREM 3
D
REM
Explanation: 

Detailed explanation-1: -In terms of brain wave activity, stage 1 sleep is associated with both alpha and theta waves.

Detailed explanation-2: -Stage N2: Theta Waves, Sleep Spindles, and K-Complexes Theta waves are one of the three characterizing traits of stage N2. Although theta waves dominate our brain activity, they are regularly interrupted by sleep spindles.

Detailed explanation-3: -NREM Stage 1 The brain transitions from alpha waves having a frequency of 8–13 Hz (common in the awake state) to theta waves having a frequency of 4–7 Hz.

Detailed explanation-4: -The wave is characteristic of stage 1 sleep. Solution: The correct answer is Alpha wave. Sleep consists of two cycles, NREM (non-rapid eye movement) and REM (rapid eye movement) cycles. The NREM cycle is divided into 4 stages and the 1st stage is characterized by the presence of alpha waves.

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