PPG-Based Sleep Staging Using SleepPPGNet: Extension to Wearables, Improvements, Limitations. - Loris Constantin; Clémentine Aguet; Jérôme Van Zaen; Alia Lemkaddem; Loïc Jeanningros; Kurt De Jaegere; Sebastian R. Ott; Anne-Kathrin Brill; Christian M. Horvath; Jean-Philippe Thiran; Mathieu Lemay; Fabian Braun (EMBC, 2024)