Q: Which formula best represents the relationship between total sleep time ($$T_{sleep}$$), number of sleep cycles ($$N_{cycles}$$), and average duration of each cycle ($$D_{cycle}$$)?

$$T_{sleep} = N_{cycles} \times D_{cycle}$$

Question 1

Which of the following best describes the primary restorative function of sleep according to current scientific understanding?

Accepted Answer

Sleep provides an opportunity for memory consolidation and neural repair.

Question 2

Which sleep stage is characterized by high-amplitude, low-frequency waves on an EEG and is most associated with physical restoration?

Accepted Answer

Stage 4 SWS

Question 3

During REM sleep, which of the following physiological changes occurs?

Accepted Answer

Heart rate and breathing become more variable.

Question 4

A patient is unable to recall dreams after waking up. Which sleep stage is most likely to have been disrupted?

Accepted Answer

REM sleep

Question 5

Which neurotransmitter is most associated with promoting wakefulness in the ascending reticular activating system (ARAS)?

Accepted Answer

Acetylcholine

Question 6

Post-Traumatic Stress Disorder (PTSD) is associated with which of the following physiological responses?

Accepted Answer

Increased sympathetic nervous system activity and cortisol release

Question 7

Which of the following best explains why sleep deprivation can impair cognitive function?

Accepted Answer

Sleep deprivation disrupts memory consolidation and synaptic plasticity.

Question 8

Which formula best represents the relationship between total sleep time ($$T_{sleep}$$), number of sleep cycles ($$N_{cycles}$$), and average duration of each cycle ($$D_{cycle}$$)?

Accepted Answer

$$T_{sleep} = N_{cycles} 	imes D_{cycle}$$

Question 9

A person cycles through SWS and REM sleep multiple times per night. If each cycle lasts approximately 90 minutes and the person sleeps for 7.5 hours, how many complete sleep cycles do they experience?

Accepted Answer

5

Question 10

Which of the following is a distinguishing feature of REM sleep compared to SWS?

Accepted Answer

REM sleep is associated with muscle paralysis and vivid dreams.

Question 11

Which of the following best describes the EEG pattern during wakefulness?

Accepted Answer

Low-amplitude, high-frequency waves

Question 12

Which of the following statements about sleep-wake cycles is correct?

Accepted Answer

The sleep-wake cycle is regulated by both circadian rhythms and homeostatic sleep drive.

Question 13

Which of the following is most likely to occur during SWS (slow-wave sleep)?

Accepted Answer

Decreased heart rate and blood pressure

Question 14

Which of the following is a common symptom of PTSD?

Accepted Answer

Recurrent intrusive memories and hyperarousal

Question 15

Which neurotransmitter is primarily responsible for inhibiting arousal and promoting sleep?

Accepted Answer

GABA

Question 16

A person is awakened from anesthesia but not from sleep. What does this suggest about the nature of sleep?

Accepted Answer

Sleep is an active process with specific neural control mechanisms.

Question 17

Which of the following best explains the role of the hypothalamic-pituitary-adrenal (HPA) axis in PTSD?

Accepted Answer

The HPA axis increases cortisol release, activating the autonomic nervous system.

Question 18

Which of the following best describes the difference between SWS and REM sleep?

Accepted Answer

SWS is characterized by synchronized EEG activity and decreased physiological activity, while REM sleep shows desynchronized EEG and increased physiological variability.

Question 19

Which medication is commonly prescribed to treat PTSD by modulating serotonin levels?

Accepted Answer

Paroxetine

Question 20

Which of the following best describes the effect of caffeine on sleep?

Accepted Answer

Caffeine blocks adenosine receptors, reducing sleepiness.

Integrated CNS Function: Sleep – Anatomy & Physiology Study Notes

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드