#1
Which stage of sleep is characterized by rapid eye movement (REM) and dreaming?
Stage 1
ExplanationREM and dreaming occur during Stage 1 of sleep.
#2
What is the term for the biological clock that regulates our sleep-wake cycle?
Circadian rhythm
ExplanationCircadian rhythm regulates the sleep-wake cycle.
#3
Which of the following is a characteristic of REM (Rapid Eye Movement) sleep?
Dreaming occurs
ExplanationREM sleep is characterized by dreaming.
#4
What term describes the phenomenon of waking up during the night and having trouble falling back asleep?
Sleep fragmentation
ExplanationSleep fragmentation is difficulty falling back asleep at night.
#5
What term refers to the brief bursts of brain activity that occur during stage 2 sleep?
Sleep spindles
ExplanationSleep spindles are brief bursts of brain activity in stage 2 sleep.
#6
Which neurotransmitter is primarily associated with promoting wakefulness?
Acetylcholine
ExplanationAcetylcholine is associated with promoting wakefulness.
#7
What sleep disorder is characterized by episodes of involuntary muscle movements during sleep?
Periodic limb movement disorder
ExplanationPeriodic limb movement disorder involves involuntary muscle movements during sleep.
#8
Which of the following is NOT a suggested tip for improving sleep quality?
Using electronic devices before bedtime
ExplanationAvoiding electronic devices before bedtime is not recommended for better sleep quality.