Key result
A 1D-CNN deep learning model using raw EEG and EOG signals achieved up to 98.06% and 97.62% accuracy for sleep stage classification on the sleep-edf and sleep-edfx databases, respectively.
Why the study?
Traditional methods for sleep stage scoring are time-consuming and involve manual evaluation of polysomnogram signals in a laboratory setting.
Does a 1D-CNN deep learning model accurately classify sleep stages using raw PSG signals?
Does a 1D-CNN deep learning model accurately classify sleep stages using raw PSG signals?
A novel 1D-CNN deep learning model can accurately automate sleep stage classification using raw EEG and EOG signals, potentially streamlining the diagnosis of neurological and sleep disorders.
Supports automated PSG analysis; leaves open prospective clinical validation before practice change.
Sleep disorder is a symptom of many neurological diseases that may significantly affect the quality of daily life. Traditional methods are time-consuming and involve the manual scoring of polysomnogram (PSG) signals obtained in a laboratory environment. However, the automated monitoring of sleep stages can help detect neurological disorders accurately as well. In this study, a flexible deep learning model is proposed using raw PSG signals. A one-dimensional convolutional neural network (1D-CNN) is developed using electroencephalogram (EEG) and electrooculogram (EOG) signals for the classification of sleep stages. The performance of the system is evaluated using two public databases (sleep-edf and sleep-edfx). The developed model yielded the highest accuracies of 98.06%, 94.64%, 92.36%, 91.22%, and 91.00% for two to six sleep classes, respectively, using the sleep-edf database. Further, the proposed model obtained the highest accuracies of 97.62%, 94.34%, 92.33%, 90.98%, and 89.54%, respectively for the same two to six sleep classes using the sleep-edfx dataset. The developed deep learning model is ready for clinical usage, and can be tested with big PSG data.
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Yıldırım et al. (2019) studied Sleep disorder. 1D-CNN deep learning model using raw PSG signals (EEG and EOG) was evaluated on Accuracy of sleep stages classification (two to six classes). A 1D-CNN deep learning model using raw EEG and EOG signals achieved up to 98.06% and 97.62% accuracy for sleep stage classification on the sleep-edf and sleep-edfx databases, respectively.
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