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Helping doctors diagnose rare sleep disorders faster and more reliably

Thursday, 11 December 2025
Eindhoven University of Technology

PhD researcher Jaap van der Aar combines specialized AI models with data from sensors such as smartwatches, creating more accessible and precise ways to monitor and ultimately diagnose rare sleep disorders. Jaap van der Aar’s mission over the past four years has been to combine unobtrusive wearables with specialized AI to improve how these conditions are monitored. One sleep disorder that Van der Aar has focused on is REM sleep behavior disorder (RBD), aiming to give clinicians better tools to recognize and treat this rare condition.

“Nightswimming deserves a quiet night” goes the opening line of the1993 song by American alternative rock band R.E.M. While night swimming may not be for everyone, a quiet night’s sleep is one thing people value.

Sleep is not uniform though, and there are different sleep stages during a sleep cycle. One sleep stage of this cycle is REM sleep, short for Rapid Eye Movement. This is the sleep stage where vivid dreams take place.

REM sleep behavior disorder

An important aspect of REM is that one’s muscles are temporarily paralyzed (known as muscle atonia), which prevents someone from acting out their dreams, such as running a marathon or swimming across an ocean. However, when people suffer from REM sleep behavior disorder (RBD) their muscles remain active.

“RBD is a sleep disorder where someone acts out their vivid dreams,” says Jaap van der Aar. “This happens because their muscles aren’t paralyzed, unlike in normal REM, and can lead to someone kicking, talking, and punching in their sleep.”


More information

Check the website.Â