$$\text{Risk} = \text{Risk}_0 + h \times \text{Deprivation}$$

Question 1

Which brain structure is primarily responsible for regulating circadian rhythms by synchronizing with light information from the retina?

Accepted Answer

Suprachiasmatic nucleus (SCN)

Question 2

During which stage of sleep are vivid dreams and rapid eye movements most likely to occur?

Accepted Answer

REM sleep

Question 3

Sleep paralysis is most likely to occur when a person is:

Accepted Answer

Waking up or going into/out of REM sleep

Question 4

Which hormone is most closely associated with the regulation of sleep and is secreted in response to darkness?

Accepted Answer

Melatonin

Question 5

A student who regularly consumes caffeine late in the evening is most likely to experience which sleep-related problem?

Accepted Answer

Sleep displacement

Question 6

Which sleep stage is characterized by delta waves and is crucial for feeling rested?

Accepted Answer

Stage 3 and 4 NREM

Question 7

According to the activation-synthesis theory, dreams are:

Accepted Answer

An attempt to make sense of random brain activity during sleep

Question 8

Which of the following is a common effect of sleep deprivation on emotional regulation?

Accepted Answer

Reacting to neutral images as if they were emotional

Question 9

Which sleep disorder is characterized by sudden waking episodes with screaming and confusion, most common in children?

Accepted Answer

Night terrors

Question 10

A person who believes they are sleep deprived despite having a normal sleep pattern may be experiencing:

Accepted Answer

Paradoxical insomnia (sleep-state misperception)

Question 11

Which neurotransmitter is most associated with the 'highs' produced by cocaine due to its blocked reabsorption?

Accepted Answer

Dopamine

Question 12

Which of the following drugs is both a stimulant and a hallucinogen, known for increasing serotonin release and social bonding?

Accepted Answer

MDMA (Ecstasy)

Question 13

Which sleep disorder involves rapid and unexpected onset of sleep, often directly into REM, and is associated with a lack of orexin?

Accepted Answer

Narcolepsy

Question 14

Which of the following is a depressant that acts on GABA receptors and is highly addictive, especially when combined with alcohol?

Accepted Answer

Benzodiazepines

Question 15

Which of the following best describes the effect of shift work on the brain?

Accepted Answer

It ages the brain by more than 6 years and dulls intellect

Question 16

Which of the following is a real-world consequence of sleep deprivation, as shown by research on daylight savings time?

Accepted Answer

Increase in car accidents

Question 17

Which type of psychoactive drug is most likely to produce vivid hallucinations and changes in perception, such as LSD or psilocybin?

Accepted Answer

Hallucinogens (psychedelics)

Question 18

Which sleep stage is most associated with memory consolidation and learning?

Accepted Answer

Slow-wave sleep (Stage 3/4 NREM)

Question 19

Which of the following is a recommended sleep hygiene practice for students?

Accepted Answer

Avoiding caffeine after lunch

Question 20

Which equation best represents the relationship between sleep deprivation and risk of physical illness, according to research?

Accepted Answer

$$	ext{Risk} = 	ext{Risk}_0 + h 	imes 	ext{Deprivation}$$

Consciousness: Sleep, Dreams, and Drugs

Study Guide - Practice Questions