Automatic Sleep Stage Classification Using 1D Convolutional Neural Network
Abstract
Purpose: Sleep is one of the necessities of the body, such as eating, drinking, etc., that affects different aspects of human life. Sleep monitoring and sleep stage classification play an important role in the diagnosis of sleep-related diseases and neurological disorders. Empirically, classification of sleep stages is a time-consuming, tedious, and complex task, which heavily depends on the experience of the experts. As a result, there is a crucial need for an automatic efficient sleep staging system.
Materials and Methods: This study develops a 13-layer 1D Convolutional Neural Network (CNN) using single-channel Electroencephalogram (EEG) signal for extracting features automatically and classifying the sleep stages. To overcome the negative effect of an imbalance dataset, we have used the Synthetic Minority Oversampling Technique (SMOTE). In our study, the single-channel EEG signal is given to a 1D CNN, without any feature extraction/selection processes. This deep network can self-learn the discriminative features from the EEG signal.
Results: Applying the proposed method to sleep-EDF dataset resulted in overall accuracy, sensitivity, specificity, and Precision of 94.09%, 74.73%, 96.43%, and 71.02%, respectively, for classifying five sleep stages. Using single-channel EEG and providing a network with fewer trainable parameters than most of the available deep learning-based methods are the main advantages of the proposed method.
Conclusion: In this study, a 13-layer 1D CNN model was proposed for sleep stage classification. This model has an end-to-end complete architecture and does not require any separate feature extraction/selection and classification stages. Having a low number of network parameters and layers while still having high classification accuracy, is the main advantage of the proposed method over most of the previous deep learning-based approaches.
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| Files | ||
| Issue | Vol 7 No 3 (2020) | |
| Section | Original Article(s) | |
| DOI | https://doi.org/10.18502/fbt.v7i3.4616 | |
| Keywords | ||
| Sleep Staging 1D Convolutional Neural Network Classification Electroencephalogram | ||
| Rights and permissions | |
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
How to Cite
1.
Salamatian A, Khadem A. Automatic Sleep Stage Classification Using 1D Convolutional Neural Network. Frontiers Biomed Technol. 2020;7(3):142-150.
