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 delta waves most prominent, and why is this stage considered crucial?

Accepted Answer

Stage 3 and 4; it is crucial for feeling rested and growth hormone production

Question 3

A student who regularly consumes caffeine after lunch and uses their bed for studying is most likely to experience which sleep-related issue?

Accepted Answer

Insomnia

Question 4

According to Freud, the difference between latent and manifest content in dreams is best described as:

Accepted Answer

Latent content is the hidden meaning; manifest content is the storyline

Question 5

Which of the following is a plausible consequence of chronic shift work, according to research?

Accepted Answer

Substantial decline in brain function, reversible after several years

Question 6

Which sleep disorder is characterized by a sudden onset of sleep, often directly into REM, and is associated with a lack of orexin?

Accepted Answer

Narcolepsy

Question 7

What is the main difference between REM sleep and NREM sleep?

Accepted Answer

REM sleep involves rapid eye movement and vivid dreams; NREM sleep involves slow brain waves and fewer dreams

Question 8

Which theory suggests that dreams help us reconsider and reprocess information critical for daily survival?

Accepted Answer

Problem-solving theory (evolutionary)

Question 9

A person who believes they are sleep deprived despite having a normal sleep cycle is likely experiencing:

Accepted Answer

Paradoxical insomnia (sleep-state misperception)

Question 10

Which psychoactive drug is most commonly used to enhance wakefulness by blocking adenosine activity?

Accepted Answer

Caffeine

Question 11

What is the primary neurotransmitter affected by cocaine, leading to its 'high'?

Accepted Answer

Dopamine

Question 12

Which of the following is a risk factor for cannabis-induced psychosis?

Accepted Answer

Family history of mental health issues

Question 13

Which sleep disorder involves walking while fully asleep, with vague consciousness of the world, and is safe to wake the person?

Accepted Answer

Somnambulism (sleepwalking)

Question 14

Alcohol acts as a depressant by increasing which neurotransmitter, leading to relaxation and, at high doses, dangerous suppression of breathing?

Accepted Answer

GABA

Question 15

Which of the following best describes the balanced-placebo design in alcohol research?

Accepted Answer

It separates physiological effects from expectations, showing expectations can influence behavior

Question 16

Which of the following is a plausible effect of sleep deprivation on mental health?

Accepted Answer

Increased stress and tendency to overreact emotionally

Question 17

Which equation best represents the biological rhythm of circadian cycles over a 24-hour period?

Accepted Answer

$$C(t) = A \sin\left(\frac{2\pi t}{24}\right) + B$$

Question 18

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 19

A person experiencing sudden waking episodes with screaming and confusion, followed by a return to deep sleep, is most likely experiencing:

Accepted Answer

Night terrors

Question 20

Which hypothesis suggests that sleep serves to restore and replenish resources, aiding in memory consolidation and cognitive function?

Accepted Answer

Restore and repair hypothesis

Consciousness: Sleep, Dreams, and Psychoactive Drugs

Study Guide - Practice Questions