Sleep I

Question 1

The _________ acts as the biological clock of the brain

Answer 1

suprachiasmatic nucleus

Question 2

The SCN regulates ________ in cells all over the body

Answer 2

metabolism

Question 3

Circadian clocks are based on ______ ____ loops

Answer 3

negative feedback

Question 4

The non-linear pattern of circadian rhythm shows that we are the most alert at what time?

Answer 4

3 hours before we go to sleep

Question 5

____ is the light sensitive hormone which tells the brain to go to sleep

Answer 5

Melatonin

Question 6

_____ is the hormone that tells your brain to wake up

Answer 6

Cortisol

Question 7

____ suppresses melatonin and can cause insomnia

Answer 7

Light

Question 8

Sleep begins at which stage?

Answer 8

Two

Question 9

What are the two hallmarks of REM sleep?

Answer 9

Muscle Atonia and Rapid Eye Movements

Question 10

This increases with each state of non-REM sleep and reflects the slow oscillations of the thalamo-cortical and retino-thalamic tracts.

Answer 10

Hypersynchrony

Question 11

T/F- Slow wave sleep occurs all over the cortex and brainstem

Answer 11

True

Question 12

What acts as the sleep switch in the cortex?

Answer 12

VLPO

Question 13

Biphasic sleeps ends at age __

Answer 13

4

Question 14

Loss of ____ is the number one effect of sleep loss on the brain

Answer 14

attention

Question 15

Sleep deprivation causes both _____ and _____ responses on the reflex test

Answer 15

lapses; premature

Question 16

What is the number one sign of sleepiness?

Answer 16

Droopy eyelids

Question 17

Both cognitive and psychomotor ____ are very affected by sleep deprivation

Answer 17

speed