This manuscript I have recently edited proposes a new approach to deep learning sleep features from EEG:
“SeriesSleepNet: An EEG Time Series Model with Partial Data Augmentation for Automatic Sleep Stage Scoring”
by Minji Lee, Heon-Gyu Kwak, Hyeong-Jin Kim, Dong-Ok Won, Seong-Whan Lee
http://journal.frontiersin.org/article/10.3389/fphys.2023.1188678
Front. Physiol. 14:1188678. doi: 10.3389/fphys.2023.1188678