BRPT Sleep Physiology and Neuroanatomy 2

Question 1

According to AASM criteria, delta waves associated with N3 sleep are defined as having a frequency of:

Accepted Answer

0.5–4 Hz

Answer

0.5–2 Hz

Answer

4–8 Hz

Answer

8–13 Hz

Question 2

In the two-process model of sleep regulation, which process represents the homeostatic sleep drive that accumulates during wakefulness via adenosine buildup?

Accepted Answer

Process S

Answer

Process C

Answer

Process W

Answer

Process R

Question 3

Sawtooth waves seen during REM sleep are best described as:

Accepted Answer

2–6 Hz triangular or notched waves maximal in central leads

Answer

0.5–2 Hz monomorphic high-amplitude waves

Answer

12–14 Hz spindle-shaped bursts

Answer

1–3 Hz biphasic K-complex-like deflections

Question 4

Approximately what percentage of total sleep time is typically spent in REM sleep in healthy adults?

Accepted Answer

20–25%

Answer

5–10%

Answer

10–15%

Answer

30–35%

Question 5

REM sleep atonia (muscle paralysis) is primarily mediated by which neurotransmitters acting on spinal motor neurons?

Accepted Answer

Glycine and GABA

Answer

Dopamine and norepinephrine

Answer

Histamine and acetylcholine

Answer

Serotonin and adenosine

Question 6

Per AASM scoring rules, a K-complex must have a minimum duration of:

Accepted Answer

0.5 seconds

Answer

0.25 seconds

Answer

0.75 seconds

Answer

1.0 seconds