Which of the following terms is most closely associated with an EEG (electroencephalogram) in the study of sleep?
A
Circadian rhythm
B
Sleep spindle
C
Alpha waves
D
REM atonia
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1
Step 1: Understand what an EEG (electroencephalogram) measures. EEG records electrical activity of the brain, often used to study different stages of sleep by detecting specific brain wave patterns.
Step 2: Review the terms given and their relation to EEG and sleep: 'Circadian rhythm' refers to the body's internal clock regulating sleep-wake cycles but is not a direct EEG pattern.
Step 3: 'Sleep spindle' is a burst of oscillatory brain activity visible on an EEG during stage 2 of non-REM sleep, indicating a specific EEG pattern.
Step 4: 'Alpha waves' are brain waves detected by EEG, typically associated with relaxed wakefulness and the transition to sleep, making them closely linked to EEG readings.
Step 5: 'REM atonia' refers to muscle paralysis during REM sleep, which is a physiological state but not directly measured by EEG brain wave patterns.