4.1.3 - Lifespan

Question 1

Changes to sleep over the lifespan

Answer 1

*Amount of total sleep required decreases
*Amount of time spent in REM sleep decreases
*Amount of time spent in NREM sleep increases

Question 2

Neonatal

Answer 2

• Sleep duration is the highest is will ever be in the lifespan
• Sleep duration: 16 hours
• REM sleep: 50%
• NREM sleep: 50%

Question 3

Infancy

Answer 3

• Sleep duration: 13.5 hours
• REM sleep: 35%
• NREM sleep: 65%
• Rapid mental and physical growth
• Need a lot of REM sleep to help replenish the mind

Question 4

Childhood

Answer 4

• Sleep duration: 11 hours
• REM sleep: 20%
• NREM sleep: 80%
• Common for children to take naps during the day until the age of 14

Question 5

Adolescence (14-18 years)

Answer 5

• Sleep duration: 9 hours
• REM sleep: 20%
• NREM sleep: 80%
• Melatonin is released later, meaning they fall asleep later and wake up later
• Adolescence usually get less sleep than required

Question 6

Young Adulthood (18-30 years)

Answer 6

• Sleep duration: 7.75 hours
• REM sleep: 20%
• NREM sleep: 80%
• Cycle shifts to an earlier sleep time and earlier wake time

Question 7

Middle Adulthood (30-75 years)

Answer 7

• Sleep duration: 7-8 hours
• REM sleep: 20%
• NREM sleep: 80%
• Cycle shifts to an earlier sleep time and earlier wake time

Question 8

Old Age (75+)

Answer 8

• Sleep duration: 6 hours
• REM sleep: 20%
• NREM sleep: 80%
• More fragmented sleep
• Increased night awakenings
• Increase in prevalence of sleep disorders
• Difficulty falling asleep and staying asleep