Question 1

Which of the following best describes the primary function of sleep according to the restorative theory?

Accepted Answer

Sleep is a period of reduced activity that helps the body and mind recover and restore energy.

Question 2

During which stage of sleep are delta waves most prominent on an EEG?

Accepted Answer

Stage N3 (deep sleep)

Question 3

A patient is awakened during REM sleep. Which of the following physiological changes are they most likely to experience?

Accepted Answer

Temporary muscle paralysis and rapid eye movement

Question 4

Which brain waves are most associated with a calm, relaxed, but awake state?

Accepted Answer

Alpha waves

Question 5

What is the primary role of the superchiasmatic nucleus (SCN) in sleep regulation?

Accepted Answer

It acts as the body's internal clock, regulating circadian rhythms.

Question 6

Which neurotransmitter is most directly blocked by caffeine, leading to increased wakefulness?

Accepted Answer

Adenosine

Question 7

A person reports feeling groggy and disoriented after being awakened. Which stage of sleep were they most likely in?

Accepted Answer

Stage N3 (deep sleep)

Question 8

Which of the following is NOT a characteristic of REM sleep?

Accepted Answer

Delta wave activity

Question 9

According to the information-processing theory, what is the main function of dreaming?

Accepted Answer

To process information and think creatively about daily events

Question 10

Which of the following best describes a circadian rhythm?

Accepted Answer

A roughly 24-hour internal biological clock that regulates physiological processes

Question 11

A student consistently goes to bed and wakes up at different times each day. According to sleep research, what is a likely consequence?

Accepted Answer

Disrupted circadian rhythms and poorer sleep quality

Question 12

Which of the following is a recommended strategy for improving sleep quality?

Accepted Answer

Keeping the bedroom cool and dark

Question 13

Which stage of sleep is most associated with sleepwalking?

Accepted Answer

Stage N3 (deep sleep)

Question 14

If a person’s EEG shows high amplitude, low frequency waves, which stage of sleep are they most likely in?

Accepted Answer

Stage N3 (deep sleep)

Question 15

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

Accepted Answer

It disrupts memory consolidation and the brain’s ability to process information.

Question 16

A person who falls asleep within 5 minutes of lying down and feels tired during the day is likely experiencing which of the following?

Accepted Answer

Sleep deprivation

Question 17

Which of the following is true about the relationship between sleep quantity and quality?

Accepted Answer

Quality of sleep, including completing full sleep cycles, is as important as quantity.

Question 18

Which of the following best describes the activation-synthesis theory of dreaming?

Accepted Answer

Dreams are the result of the brain's attempt to make sense of random neural activity during sleep.

Question 19

Which of the following neurotransmitters is most associated with promoting wakefulness?

Accepted Answer

Norepinephrine

Question 20

A person travels from New York to Tokyo and experiences jet lag. Which aspect of sleep regulation is most directly affected?

Accepted Answer

Circadian rhythms controlled by the SCN

Sleep: Stages, Brain Waves, and Biological Rhythms (Introductory Psychology)

Study Guide - Practice Questions