Qualitatively different sleep patterns for different ages (babies, adolescents, adults, elderly)
- how we know there's different stages - EEG to show wave patterns in the brain
Middle Age = less stage 4 sleep
Elderly = no stage 4 sleep
Dement and Sleep Labs
Children spend 50% of their sleep in REM stage compared to older people.
-due to growth hormones + neurotransmitters + protein synthesis
Environmental/lifestyle factors affecting young adults/middle aged sleep.
-eg. stress, caffeine
Elderly have disrupted sleep due to: medication, pain at night