Module 16 - Sleep Patterns & Sleep Theories

Question 1

sleep

Answer 1

a periodic, natural loss of consciousness

Question 2

circadian rythm

Answer 2

our biological clock; regular body rythms for a 24 hour cycle

Question 3

REM sleep (rapid eye movement sleep)

Answer 3

AKA paradoxical sleep because the muscles are relaxed but other body systems are active, sleep stage where vivid dreams often occur

Question 4

alpha waves

Answer 4

the relatively slow brain waves of a relaxed, awake state

Question 5

NREM sleep (non-rapid eye movement sleep)

Answer 5

encompasses all sleep stages except for REM sleep

Question 6

hallucinations

Answer 6

sensory experiences that occur without a stimulus

Question 7

hypnagogic sensations

Answer 7

experiences such as having a feeling of falling & your body suddenly jerks/ floating weightlessly

Question 8

sleep spindles

Answer 8

bursts of rapid, rythmic brain activity during NREM-2

Question 9

delta waves

Answer 9

large, slow brain waves during NREM-3

Question 10

suprachiasmatic nucleus (SCN)

Answer 10

a pair of cell clusters in the hypothalamus that controls circadian rythm. in response to light, the SCN causes the pineal gland to adjust melatonin production, which modifies our feelings of sleepiness.