Mar 3, 2023
Manual annotation of polysomnography studies is subject to human bias with multiple studies showing variations in how sleep experts score sleep. Most research in automatic sleep stage classification models use small-scale data from a single origin, and it is unknown how these models generalize to new data. We developed an algorithm for automatic scoring of sleep stages using raw polysomnography data and obtain state-of-the-art classification performance on a large number of test subjects. Our algorithm was tested under different conditions to compare generalizability. We found that using data from many different sources improves classification performance, and that models trained on single-origin data generalize inconsistently to new data. Future researchers should take multiple datasets into account when developing sleep scoring models.
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