Understanding Sleep and Dreams

What is the first stage of sleep called?

• REM sleep

• NREM Stage 1

• Deep sleep

• NREM Stage 3

Which hormone is primarily responsible for regulating sleep-wake cycles?

• Insulin

• Melatonin

• Cortisol

• Adrenaline

Describe the role of circadian rhythms in sleep regulation.

• They determine the amount of sleep needed.

• They regulate the timing of sleep and wakefulness.

• They control the depth of sleep stages.

• They are responsible for dreaming.

How does sleep deprivation affect cognitive performance?

• It enhances memory retention.

• It has no effect on cognitive performance.

• It impairs attention and decision-making.

• It improves problem-solving skills.

Explain why REM sleep is important for the brain.

• It helps in physical recovery.

• It is crucial for emotional regulation and memory consolidation.

• It is the deepest stage of sleep.

• It reduces the need for sleep.

What is the primary effect of disrupting circadian rhythms?

• Increased energy levels

• Improved sleep quality

• Sleep disorders and fatigue

• Enhanced focus

Which stage of sleep is characterized by rapid eye movement and vivid dreams?

• NREM Stage 2

• REM sleep

• NREM Stage 3

• NREM Stage 1

Analyze how sleep deprivation can impact physical health.

• It strengthens the immune system.

• It has no impact on physical health.

• It can lead to weight gain and weakened immunity.

• It improves cardiovascular health.

What is the typical duration of a complete sleep cycle?

• 30 minutes

• 60 minutes

• 90 minutes

• 120 minutes

Evaluate the impact of artificial light on circadian rhythms.

• It has no effect on circadian rhythms.

• It can disrupt circadian rhythms by suppressing melatonin production.

• It enhances the quality of sleep.

• It shortens the duration of sleep cycles.