16. Stage 1 sleep resembles wakefulness because it shows:

A. Delta waves
B. Spindles and K-complexes
C. Low amplitude, high frequency EEG
D. Theta-suppression waves

Answer: C. Low amplitude, high frequency EEG

Question

16. Stage 1 sleep resembles wakefulness because it shows:

A. Delta waves
B. Spindles and K-complexes
C. Low amplitude, high frequency EEG
D. Theta-suppression waves

Answer: C. Low amplitude, high frequency EEG

BlackTom AI · Accepted Answer

The question asks about Stage 1 sleep and what it resembles from wakefulness. 
Option A: Delta waves. Delta waves are large, slow brain waves associated with deep sleep (especially N3/slow-wave sleep). They do not characterize Stage 1, so this is incorrect. 
Option B: Spindles and K-complexes. Sleep spindles and K-complexes are hallmark features of Stage 2 sleep, emerging as the sleeper moves beyond light sleep. Since Stage 1 lacks these features, this choice is inaccurate. 
Option C: Low amplitude, high frequency EEG. This description aligns with the idea that Stage 1 sleep is light sleep and EEG activity is closer to wakefulness, showing smaller, faster waves compared to deeper stages. The wording corresponds to a more alert, desynchronized pattern than deeper sleep, which is why this option is considered correct in the provided answer. 
Option D: Theta-suppression waves. Theta activity (4–7 Hz) is typical of Stage 1 sleep, but the term “theta-suppression waves” is not a standard or recognized descriptor in sleep physiology. Using an unusual or misleading term makes this choice unreliable and thus incorrect. 
In summary, the options contrast the different EEG signatures across sleep stages: delta for deep sleep, spindles/K-complexes for Stage 2, high-frequency low-amplitude patterns (as described in Option C) for light sleep resembling wakefulness, and a nonstandard label in Option D that doesn’t match standard nomenclature. The reasoning points to the description in Option C as the one that best fits Stage 1’s resemblance to wakeful EEG activity, given the context provided by the question.

16. Stage 1 sleep resembles wakefulness because it shows: A. Delta waves B. Spindles and K-complexes C. Low amplitude, high frequency EEG D. Theta-suppression waves Answer: C. Low amplitude, high frequency EEG单项选择题

类似问题

24. Stage 3 sleep is characterized by: A. Beta waves B. Delta waves C. Sleep spindles D. Rapid eye movements

When our brain waves are in the waves activity, one would be in stage one of sleep.

When we enter this stage of sleep, our brain waves change to theta waves.

In this stage of sleep, we are no longer responsive to the outside world and our sensory experiences drop.

Each stage of sleep is characterized by different types of brain wave patterns.

Question at position 17 ________ is the deepest stage of sleep, during which we are least responsive to outside stimulation.Stage 1 sleepStage 3 sleepStage 4 sleepStage 2 sleep

Which stage of sleep is characterized by delta waves?

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