Understanding Sleep Stages Flashcard

Front

What are the stages of sleep?

Back

There are five stages of sleep: Stage 1 (light sleep), Stage 2 (light sleep with sleep spindles), Stage 3 (deep sleep), Stage 4 (deep sleep), and REM (Rapid Eye Movement) sleep.

Front

What brain wave activity is associated with Stage 1 sleep?

Back

Stage 1 sleep is characterized by theta waves.

Front

What brain wave activity is predominant during Stage 2 sleep?

Back

Stage 2 sleep is characterized by sleep spindles and K-complexes.

Front

What is the primary brain wave activity during Stage 3 sleep?

Back

Stage 3 sleep is characterized by delta waves.

Front

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

Back

Delta waves are predominant during Stage 4 sleep.

Front

What is the difference between Stage 3 and Stage 4 sleep?

Back

Stage 3 and Stage 4 are both considered deep sleep, but Stage 4 is deeper and has a higher proportion of delta waves.

Front

How long does a typical sleep cycle last?

Back

A typical sleep cycle lasts about 90 minutes.

Front

What is REM sleep and why is it important?

Back

REM sleep is a stage of sleep characterized by rapid eye movement, increased brain activity, and vivid dreams. It is important for memory consolidation and emotional regulation.

Front

How do sleep stages change throughout the night?

Back

As the night progresses, the duration of REM sleep increases while deep sleep (Stages 3 and 4) decreases.

Front

What physiological changes occur during deep sleep?

Back

During deep sleep, heart rate and breathing slow down, and the body focuses on repair and growth.