sleep across the lifespan

Question 1

newborn (1-15 days)

Answer 1

approx 16 hours-
50% in NREM, and 50% REM
generally experience frequent awakenings, and can enter REM almost immediately

Question 2

child

Answer 2

approx 10-12 hours of sleep
approx. 80 % NREM and 20-% REM

-minimal awakenings

Question 3

adolescent

Answer 3

Approx 9-10 hours of sleep
80% REM and 20% NREM

-minimal awakenings

Question 4

Adult

Answer 4

approx 8 hours of sleep
80% REM and 20% NREM

-fewer awakenings

Question 5

Elderly

Answer 5

approx 5-7 hours
80-85% REM and 15-20% NREM

majority of NREM in stage 1,2
frequent awakenings
delayed sleep onset