Question 1

Which of the following best describes the main function of circadian rhythms in sleep?

Accepted Answer

They regulate the cyclical processes of sleep and wakefulness over a 24-hour period.

Question 2

A college student consistently gets less than 6 hours of sleep per night for several weeks. Which of the following is a likely consequence based on the study materials?

Accepted Answer

Decreased ability to learn and solve problems

Question 3

During which stage of sleep are sleep spindles most commonly observed in brain wave recordings?

Accepted Answer

Stage 2 NREM sleep

Question 4

Which brain wave pattern is most associated with deep, restorative sleep?

Accepted Answer

Delta waves

Question 5

A person describes a dream that is emotional, illogical, and contains sudden plot shifts. In which stage of sleep did this dream most likely occur?

Accepted Answer

REM sleep

Question 6

Which of the following is a plausible explanation for why sleep is necessary, according to the study materials?

Accepted Answer

To consolidate and retain memories

Question 7

A patient reports waking up unable to move and feeling a heavy weight on their chest, but no physical cause is found. What is the most likely explanation?

Accepted Answer

Sleep paralysis

Question 8

Which sleep disorder is characterized by sudden, unexpected episodes of sleep and may involve cataplexy?

Accepted Answer

Narcolepsy

Question 9

According to the activation synthesis theory, what is the primary cause of dreams?

Accepted Answer

Random neural activity in the brain

Question 10

Which of the following is TRUE about hypnosis based on the study materials?

Accepted Answer

Most people remain fully aware of their surroundings during hypnosis.

Question 11

A person experiences realistic perceptual sensations, such as hearing voices, in the absence of external stimuli. This is best described as:

Accepted Answer

A hallucination

Question 12

Which of the following drugs is classified as a stimulant and is known for its highly addictive properties?

Accepted Answer

Nicotine

Question 13

Billy drinks alcohol daily and reports that he does so to avoid tremors and nausea. This is an example of:

Accepted Answer

Physical dependence

Question 14

Which of the following best describes the effects of depressants such as alcohol at high doses?

Accepted Answer

They slow down thinking and decrease central nervous system activity.

Question 15

A person is found performing complex behaviors, such as walking or eating, while fully asleep. This is most likely:

Accepted Answer

Sleepwalking during NREM sleep

Question 16

Which of the following is a common effect of sleep deprivation over several days?

Accepted Answer

Weight gain and decreased immune system activity

Question 17

Which theory of dreaming would most likely interpret a dream about being late for class as a reflection of the dreamer's cognitive abilities and daily concerns?

Accepted Answer

Neurocognitive theory

Question 18

Which of the following is a recommended sleep tip based on the study materials?

Accepted Answer

Maintain a regular sleep schedule

Question 19

A person reports feeling as if their consciousness has 'detached' from their body during a stressful event. According to the study materials, this is best described as:

Accepted Answer

An out-of-body experience (OBE)

Question 20

Which of the following drugs is considered a 'mild hallucinogen' and has been used for recent medical applications?

Accepted Answer

Marijuana

Chapter 5: Consciousness – Sleep, Dreams, and Altered States

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