Question 1

Which brain structure is primarily responsible for synchronizing the body's circadian rhythm with environmental light-dark cycles?

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

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

Question 3

A student reports feeling conscious but unable to move upon waking, accompanied by chest pressure and a sense of a menacing presence. What is the most likely explanation?

Accepted Answer

Sleep paralysis

Question 4

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

Accepted Answer

Melatonin

Question 5

What is the primary difference between NREM and REM sleep?

Accepted Answer

REM sleep is associated with vivid dreams and rapid eye movements

Question 6

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

Accepted Answer

Night terrors

Question 7

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

Accepted Answer

Paradoxical insomnia (sleep-state misperception)

Question 8

Which neurotransmitter is most directly affected by stimulant drugs such as cocaine and amphetamines, leading to increased wakefulness and euphoria?

Accepted Answer

Dopamine

Question 9

What is the main risk associated with combining alcohol and benzodiazepines?

Accepted Answer

Suppression of breathing leading to potentially fatal overdose

Question 10

Which theory suggests that dreams are a way for the brain to make sense of random neural activity during sleep?

Accepted Answer

Activation-synthesis theory

Question 11

A person working rotating night shifts is likely to experience which of the following due to circadian rhythm disruption?

Accepted Answer

Exhaustion, agitation, and increased risk of depression

Question 12

Which of the following is a common effect of chronic cannabis use?

Accepted Answer

Impaired cognitive function (reversible)

Question 13

Which sleep stage is most difficult to awaken from and is suppressed by alcohol?

Accepted Answer

Stage 4

Question 14

Which psychoactive drug is known for producing vivid hallucinations and increased communication among neural networks?

Accepted Answer

LSD

Question 15

What is the effect of sleep deprivation on emotional regulation, according to neuroscience findings?

Accepted Answer

Reduced ability to regulate emotions due to lack of frontal cortex activation

Question 16

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

Accepted Answer

A method to separate physiological effects from expectations about alcohol

Question 17

Which sleep disorder is associated with a lack of orexin and can cause sudden onset of REM sleep?

Accepted Answer

Narcolepsy

Question 18

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

Accepted Answer

Maintaining a regular sleep-wake schedule

Question 19

Which class of drugs acts by reducing arousal and stimulation, and includes substances like alcohol and benzodiazepines?

Accepted Answer

Depressants

Question 20

If a person experiences hallucinations, delusions, and disorganized thinking after using high-THC cannabis, what condition might they be experiencing?

Accepted Answer

Cannabis-induced psychosis

Consciousness: Sleep, Dreams, and Drugs – Psychology Study Notes

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