#1
What is the approximate duration of a full sleep cycle?
90 minutes
ExplanationA full sleep cycle typically lasts around 90 minutes.
#2
During which stage of sleep do most dreams occur?
REM (Rapid Eye Movement) sleep
ExplanationMost dreams occur during REM (Rapid Eye Movement) sleep.
#3
What is the term for the inability to move or speak during sleep onset or upon waking up?
Sleep paralysis
ExplanationSleep paralysis refers to the inability to move or speak during sleep onset or upon waking up.
#4
Which neurotransmitter is associated with promoting sleep and relaxation?
Serotonin
ExplanationSerotonin is associated with promoting sleep and relaxation.
#5
What is the term for the study of dreams and their meanings?
Oneirology
ExplanationThe study of dreams and their meanings is called oneirology.
#6
During which stage of sleep do sleepwalking and night terrors typically occur?
NREM (Non-Rapid Eye Movement) sleep
ExplanationSleepwalking and night terrors typically occur during NREM (Non-Rapid Eye Movement) sleep.
#7
What is the term for the sudden muscle contractions or jerks that sometimes occur during the transition from wakefulness to sleep?
Hypnagogic jerks
ExplanationSudden muscle contractions or jerks that sometimes occur during the transition from wakefulness to sleep are called hypnagogic jerks.
#8
What is the phenomenon of waking up in the middle of the night and having difficulty falling back asleep called?
Nocturnal awakening
ExplanationWaking up in the middle of the night and having difficulty falling back asleep is called nocturnal awakening.
#9
What is the term for the recurring inability to breathe properly during sleep?
Sleep apnea
ExplanationThe recurring inability to breathe properly during sleep is called sleep apnea.
#10
Which hormone is associated with regulating the sleep-wake cycle?
Melatonin
ExplanationMelatonin is associated with regulating the sleep-wake cycle.
#11
In what stage of sleep are the brain waves slow and large, indicating deep sleep?
Delta sleep
ExplanationSlow and large brain waves indicating deep sleep occur in Delta sleep.
#12
What is the term for the phenomenon of waking up and being unable to recall any dreams?
Dreamlessness
ExplanationThe phenomenon of waking up and being unable to recall any dreams is termed dreamlessness.