Understanding Sleep and Circadian Rhythms

What is the natural process that regulates our sleep-wake cycle?

• Circadian rhythm

• Suprachiasmatic nucleus

• Pineal gland

• Adenosine

What part of the brain is responsible for regulating our circadian rhythm?

• Hypothalamus

• Pineal gland

• Suprachiasmatic nucleus

• Hippocampus

What hormone does the pineal gland release to help the body prepare for sleep?

• Serotonin

• Melatonin

• Dopamine

• GABA

What compound is released to slow down brain activity as you approach bedtime?

• Melatonin

• GABA

• Adenosine

• Cortisol

What happens to your core body temperature as you approach bedtime?

• It rises

• It remains the same

• It drops

• It fluctuates

What waste product does your brain release throughout the day that makes you feel tired?

• Melatonin

• GABA

• Adenosine

• Dopamine

What does caffeine block in your brain to temporarily make you feel more awake?

• GABA

• Adenosine

• Melatonin

• Dopamine

Which area of the brain is responsible for storing short-term memories during studying?

• Pineal gland

• Hippocampus

• Prefrontal cortex

• Neocortex

What happens to memories after sleep?

• They are erased

• They are stored in the hippocampus

• They are consolidated into long-term storage in the neocortex

• They are forgotten

What is a "microsleep"?

• A full night's sleep

• A brief, unconscious period of sleep lasting a few seconds

• A nap

• A deep, restorative sleep