AUTHOR=Sarkez-Knudsen Mathias , Ballegaard Martin , Piilgaard Henning , Ahrens Esben , Hemmsen Martin Christian , Andersen Tobias Søren , Bradram Jakob Eyvind , Homøe Preben TITLE=Exploring SLEEPINESS through home monitoring with ultra-long-term subcutaneous EEG and ecological momentary assessment in sleepy treatment naïve obstructive sleep apnea patients starting CPAP treatment—A study protocol article JOURNAL=Frontiers in Sleep VOLUME=3 YEAR=2025 URL=https://www.frontiersin.org/journals/sleep/articles/10.3389/frsle.2024.1496923 DOI=10.3389/frsle.2024.1496923 ISSN=2813-2890