Before revision: In sleep science, sleep onset latency (SOL) is the length of time that it takes to accomplish the transition from full wakefulness to sleep, normally to the lightest of the non-REM sleep stages.
After revision: + MSLT Scores Minutes Sleepiness 0–5Severe 5–10Troublesome 10–15Manageable 15–20ExcellentIn sleep science, sleep onset latency (SOL) is the length of time that it takes to accomplish the transition from full wakefulness to sleep, normally to the lightest of the non-REM sleep stages.