Understanding Sleep Stages Quiz

Which type of brain waves begin to appear in Stage 3 sleep?

• Alpha waves

• Beta waves

• Delta waves

• Theta waves

How long does Stage 2 sleep typically last?

• 10 minutes

• 20 minutes

• 30 minutes

• 40 minutes

What is a characteristic of Stage 4 sleep?

• Rapid eye movement

• Light sleep

• Delta waves almost exclusively

• Frequent awakenings

During which stage of sleep do sleep spindles occur?

• Stage 1

• Stage 2

• Stage 3

• Stage 4

What is the main difference between Stage 1 and Stage 2 sleep in terms of eye movement?

• Eye movements are faster in Stage 2.

• Eye movements stop in Stage 2.

• Eye movements are slower in Stage 1.

• Eye movements are the same in both stages.

Which stage of sleep is known as deep sleep?

• Stage 1

• Stage 2

• Stages 3 and 4

• REM sleep

What is a common experience for people awakened from Stage 1 sleep?

• They feel fully rested.

• They remember fragmented visual images.

• They have vivid dreams.

• They feel disoriented.

How does muscle activity change during Stage 1 sleep?

• It increases.

• It remains the same.

• It slows down.

• It stops completely.

What is the primary brain wave activity during Stage 4 sleep?

• Alpha waves

• Beta waves

• Delta waves

• Theta waves

How long do Stages 3 and 4 sleep together typically last?

• 10-20 minutes

• 20-30 minutes

• 40-60 minutes

• 60-90 minutes