12 Questions
Which stage of sleep is characterized by sleep spindles and K-complexes?
Stage 2 (NREM)
What happens if a person is awoken during stage 3 of sleep?
They may experience mental cloudiness for 30 to 60 minutes
What does REM stand for in the context of sleep stages?
Rapid Eye Movement
Which stage of sleep is characterized by delta waves?
Stage 3 (NREM)
Which of the following brain wave patterns is associated with being awake and alert?
Beta waves
What protects individuals from acting out their dreams during the dreaming stage of sleep?
Muscle relaxation
What happens to brain wave patterns when a person closes their eyes and becomes drowsy?
Alpha waves dominate over beta waves
At what age do individuals tend to have fewer stage 3 cycles and more stage 2 cycles?
Older age
Which stage of sleep is characterized by low-amplitude, mixed-frequency brain wave activity?
Stage 1 (NREM)
What percentage of the total sleep cycle is typically accounted for by Stage 1 (NREM)?
Approximately 5%
What is the approximate duration of the first cycle of stage 2 sleep?
~25 minutes
During which stage of sleep is skeletal muscle tone present?
Wake stage (NREM)
Test your knowledge on the different stages of sleep and brain wave patterns. Learn about REM and NREM sleep cycles, as well as how electroencephalograms (EEGs) are used to detect brain wave frequencies and amplitudes. Explore the fascinating world of sleep science!
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