Fig. 2From: Automatic sleep stage classification based on subcutaneous EEG in patients with epilepsyRepresentative night: the second night of patient B. Top panel: spectrogram of the proximal subcutaneous EEG channel (P–C). Middle panel: spectrogram of the corresponding scalp channel (P7–T7). Bottom panel: manually scored hypnogram based on scalp EEG and the predicted hypnograms by the PS and LONO algorithm and the human expertBack to article page