Unit 2 Part 3: Sleep and Dreams

Question 1

the periodic loss of natural consciousness, distinct from coma, anesthesia, or hibernation

Answer 1

sleep

Question 2

What is sleep evolutionarily designed to do?

Answer 2

• protect us from perils of night
• consolidate memories
• enhance cognitive functions

Question 3

region of the cerebral cortex involved in planning, control, and execution of voluntary movements.

Answer 3

Motor Cortex

Question 4

What prevents someone from moving while sleeping?

Answer 4

motor command signals are blocked by the Brain Stem

Question 5

During which sleep cycle do eyes remain active?

Answer 5

REM (Rapid Eye Movement)

Question 6

What sleep cycle would you consider to be the deep sleep experience?

Answer 6

REM

Question 7

natural internal process that regulates the sleep wake cycle and repeats on each rotation of the earth

Answer 7

Cricadian Rythm

Question 8

sleeping signals

Answer 8

melatonin

Question 9

waking signals

Answer 9

acetylcholine

Question 10

Stages of Sleep

Answer 10

1. Waking Beta
2. Waking Alpha (relaxed, but awake)
3. Non-REM 1 (can experience hallucinations, images, falling, jerking)
4. Non-REM 2
5. Non-REM 3 (delta brain waves - deep sleep)
6. REM (roughly 10 min w/ vivid dreaming)

Question 11

what happens after the sleep cycle is complete?

Answer 11

brain goes back to Non-Rem 2 and completes cycle from there

Question 12

What side affects may lack of sleep have?

Answer 12

depression
illness
anxiety
diminished cognitive abilities

Question 13

What are the sleep disorders?

Answer 13

Insomnia
Narcolepsy
Sleep Apnea
Night Terrors

Question 14

consistent lack of sleep and/or inability to maintain sleep

Answer 14

Insomnia

Question 15

uncontrolled bouts of falling asleep (short or long)

Answer 15

Narcolepsy