AP Psych Unit 5, Mod 23 - Price

How is the hypothalamus involved in sleep?

In response to decreasing light the hypothalamus' suprachiastmatic nucleus causes the pineal gland to increase production of melatonin, leading you to sleep.

At 3 o'clock in the morning, John has already slept for 4 hours. As long as his sleep continues, we can expect an increasing occurrence of

REM sleep

Cindi prefers to take exams in the late afternoon rather than during the morning, because her energy level and ability to concentrate are better at that time. Her experience most likely reflects the influence of the

circadian rhythm

The pituitary gland releases a growth hormone during

slow-wave sleep

Bats need a lot of sleep because their high waking metabolism produces ________ that are toxic to neurons.

free radicals

Some people function well with fewer than 6 hours of sleep per night, while others need 9 hours or more. Such differences in individual sleep patterns suggests that

genetics make a difference in how much sleep we need to get

REM sleep is called paradoxical sleep because

our nervous system is highly active, while our voluntary muscles hardly move.

After sleeping for about an hour and a half, José enters a phase of paradoxical sleep. He is likely to

very relaxed muscles

Forty-year-old Lance insists that he never dreams. Research suggests that he probably

would report a vivid dream if he were awakened during REM sleep

The large, slow brain waves associated with deep sleep are called

delta waves