consciousness and sleep

Question 1

REM

Answer 1

• increased heart rate, breathing
• 20% of sleep - towards the end of the night
• replenishes the brain
• increases as the night progresses

Question 2

NREM

Answer 2

• alpha, theta and delta waves
• decreased heart rate, breathing
• 80% of sleep - towards the start of the night
• replenishes the body
• decreased as the night progresses

Question 3

circadian rhythms

Answer 3

• sleep - wake cycle - 10 hours sleep, 14 hours awake
• in normal circumstances, sleepiness at highest at night, lowest during the day
• light and dark cycle

Question 4

ultradian rhythms

Answer 4

• change in bodily functions in a cycle less than 24 hours

- nrem/rem cycles of 90 minutes

Question 5

stage 1

Answer 5

• occurs as we drift into/out of sleep

- gradually lose awareness

Question 6

stage 2

Answer 6

• light sleep

Question 7

stage 3

Answer 7

• start of the deepest period of sleep
• individual is less responsive to external stimuli
• sleep terrors and sleep walking

Question 8

stage 4

Answer 8

deepest stage of sleep
individual is very difficult to awaken
sleep terrors, sleep walking, talking

Question 9

restorative theory

Answer 9

rest and recovery replenishes us
sleep replenishes our bodies
replenishes neurotransmitters that are vital to communication
rem sleep - enhance brain development
nrem sleep - essential for the physical growth

Question 10

evolutionary theory

Answer 10

survival

based on the demands of how much food we eat, energy requirements

Question 11

beta

Answer 11

experience when we’re awake
focused attention/normal wakefulness
REM sleep

Question 12

alpha

Answer 12

awake and alert but mentally and physically relaxed
daydreaming, light meditation
NREM stage 1

Question 13

theta

Answer 13

starting to fall asleep

early stages of sleep

Question 14

delta

Answer 14

asleep/deep sleep
anaesthetised, unconscious
NREM stages 3-4