RPSGT Core Concepts & Fundamentals 2

Question 1

According to AASM scoring rules, what is the minimum duration of a sleep epoch?

Accepted Answer

30 seconds

Answer

The AASM standard epoch length for sleep scoring is 30 seconds.

Question 2

Which EEG frequency band is characterized by 8–13 Hz activity and is most prominent in quiet wakefulness with eyes closed?

Accepted Answer

Alpha

Answer

Alpha waves (8–13 Hz) are the hallmark of relaxed wakefulness with eyes closed.

Question 3

In polysomnography, what does the term 'montage' refer to?

Accepted Answer

The specific combination and arrangement of recording channels

Answer

A montage is the defined set of channels and their derivations used during a PSG recording.

Question 4

Stage N3 sleep is defined by what minimum percentage of slow-wave activity (SWA) per epoch?

Accepted Answer

20%

Answer

AASM criteria require at least 20% of the epoch to consist of slow-wave (delta) activity to score N3.

Question 5

Which neurotransmitter is most responsible for the muscle atonia seen during REM sleep?

Accepted Answer

Glycine and GABA

Answer

Glycine and GABA act on spinal motor neurons to produce the hyperpolarization that causes REM atonia.

RPSGT Exam Practice Test