RPSGT RPSGT Sleep Staging & Scoring

Question 1

According to AASM scoring rules, what percentage of an epoch must consist of slow wave activity to score Stage N3?

Accepted Answer

≥20%

Answer

≥10%

Answer

≥30%

Answer

≥50%

Question 2

What is the typical frequency range for sleep spindles used when scoring Stage N2?

Accepted Answer

11–16 Hz

Answer

4–7 Hz

Answer

8–10 Hz

Answer

18–25 Hz

Question 3

What is the minimum duration a K-complex must meet to satisfy AASM scoring criteria?

Accepted Answer

0.5 seconds

Answer

0.25 seconds

Answer

0.75 seconds

Answer

1.0 second

Question 4

According to AASM guidelines, which electrode region is used to measure slow wave activity for N3 scoring?

Accepted Answer

Frontal (F3/F4)

Answer

Occipital (O1/O2)

Answer

Central (C3/C4)

Answer

Temporal (T3/T4)

Question 5

What is the standard epoch length used in polysomnography scoring per AASM guidelines?

Accepted Answer

30 seconds

Answer

20 seconds

Answer

45 seconds

Answer

60 seconds

Question 6

During REM sleep, which chin EMG finding is expected on a polysomnogram?

Accepted Answer

Atonia with occasional phasic twitches

Answer

High-amplitude tonic activity

Answer

Moderate activity with phasic bursts

Answer

Rhythmic jaw clenching

Question 7

According to AASM rules, an epoch is scored Stage Wake (W) when alpha activity occupies what proportion of the epoch?

Accepted Answer

≥50%

Answer

≥20%

Answer

≥30%

Answer

≥75%