Unit 4 Psychology Sleep

Pattern of physical and behavioral changes in a 24-hour cycle due to light and darkness.

Stages of sleep are classified by:

Stages of sleep are differentiated by:

Hormone from the pineal gland that promotes relaxation and sleepiness

Drifting in and out of sleep, easily awakened.

During this sleep stage, muscle activity and eye movements stop, making awakening difficult.

Sleep stages count

Percentage of life spent asleep?

Beta or sawtooth waves indicate a person who is:

Change in bodily function occurring more than 24 hours: