Ch: 9 Quiz

Question 1

Mammals have circadian rhythms

Answer 1

for a variety of activities, including sleep.

Question 2

A person’s circadian activity cycle would most likely drift out of phase with the activity of other people if the person:

Answer 2

spends a period of time in seclusion, away from sunlight

Question 3

If suprachiasmatic nucleus neurons are disconnected from the rest of the brain, they:

Answer 3

continue to produce activity that follows a circadian rhythm

Question 4

The proteins PER and TIM, originally discovered in insects but now found in mammals also, influence circadian rhythms by:

Answer 4

building up during the day and declining during sleep.

Question 5

Sleep spindles and K-complexes are most characteristic of which sleep stage?

Answer 5

Stage 2

Question 6

Which of the following occurs as a normal night’s sleep progresses?

Answer 6

stage 4 decreases, while REM increases

Question 7

People with REM behavior disorder:

Answer 7

move vigorously during REM, apparently acting out their dreams.

Question 8

Which of the following would most likely have the highest total amount of REM sleep?

Answer 8

Human Infant

Question 9

Compared to REM, research suggests that NREM is:

Answer 9

important for strengthening memories of lists of words.

Question 10

According to the activation-synthesis hypothesis of dreams, a dream represents the brain’s effort to:

Answer 10

make sense of sparse and distorted information.