#1
Which brainwave pattern is associated with deep sleep?
Delta
ExplanationDelta waves signify the deepest stage of sleep.
#2
Which hormone plays a crucial role in regulating the circadian rhythm?
Melatonin
ExplanationMelatonin regulates the sleep-wake cycle.
#3
What is a characteristic of sleep deprivation?
Impaired memory and concentration
ExplanationSleep deprivation leads to impaired cognitive function.
#4
Which sleep stage is known as the transition from wakefulness to sleep and occupies a small portion of the total sleep cycle?
Stage 1
ExplanationStage 1 sleep is the transition from wakefulness to sleep.
#5
Which neurotransmitter is associated with promoting relaxation and sleep?
GABA
ExplanationGABA promotes relaxation and sleep.
#6
What is the primary function of REM (Rapid Eye Movement) sleep?
Dreaming
ExplanationREM sleep is associated with vivid dreaming.
#7
Which sleep disorder is characterized by sudden and brief muscle contractions?
Hypnic jerks
ExplanationHypnic jerks are sudden muscle contractions often experienced while falling asleep.
#8
What is a common characteristic of parasomnias?
Abnormal behavior during sleep
ExplanationParasomnias involve abnormal behaviors during sleep, like sleepwalking.
#9
In what stage of sleep do night terrors typically occur?
Stage 3
ExplanationNight terrors often occur during deep stage 3 sleep.
#10
What is the term for the sensation of falling and jerking awake just before entering sleep?
Hypnagogic jerk
ExplanationHypnagogic jerks are involuntary muscle movements before sleep onset.
#11
Which sleep disorder is characterized by an overwhelming urge to move the legs, often accompanied by uncomfortable sensations?
Restless Legs Syndrome (RLS)
ExplanationRLS causes an urge to move legs, especially when at rest.
#12
What is the term for the phenomenon where an individual falls asleep during normal waking hours?
Cataplexy
ExplanationCataplexy involves sudden loss of muscle control leading to falling asleep.
#13
Which neurotransmitter is associated with the regulation of sleep-wake cycles?
Serotonin
ExplanationSerotonin regulates sleep-wake cycles and mood.
#14
Which part of the brain is primarily responsible for regulating sleep-wake cycles?
Hypothalamus
ExplanationThe hypothalamus regulates the sleep-wake cycle.
#15
What is the main neurotransmitter associated with promoting wakefulness?
Dopamine
ExplanationDopamine promotes alertness and wakefulness.
#16
What is the term for the inability to move or speak while falling asleep or waking up?
Sleep paralysis
ExplanationSleep paralysis is the inability to move during sleep transitions.
#17
Which sleep disorder is characterized by the sudden loss of muscle tone, leading to a temporary inability to move?
Cataplexy
ExplanationCataplexy involves sudden loss of muscle tone.