Sleep studies have been conducted to determine why survivors of brain injury often report sleep disturbance, lack of dreaming, difficulty falling asleep or staying asleep, and excessive sleepiness, even though they have had what is considered a "normal" amount of sleep.
Clients sleep 7-8 hours nightly and yet, still have excessive daytime sleepiness. A client can go from awake to asleep in five minutes during the day.

How common are sleep disorders after brain injury?
If an abnormality is identified and corrected, will it improve rehabilitation and quality of life?
