Objectives: Microsleeps (MS), short episodes of sleep (lasting 3-15 seconds) are related to insufficient sleep and daytime sleepiness. The purpose of this study was to explore possible ways of integrating Microsleeps in a typical Maintenance of Wakefulness Test (MWT) and determine if it improves association with daytime sleepiness. More precisely we wanted to explore what the benefit would be if in a typical MWT test we added the scoring of Microsleeps and calculated the Microsleep Latency as an additional parameter when evaluating Obstructive Sleep Apnea (OSA) patients and their level of sleepiness. We also wanted to investigate possible ways of anticipating imminent sleep using the MS presence as an indicator...