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Table 1 Features used in this study

From: Automatic sleep staging using ear-EEG

Label Short description Type
F1 Signal skewness EEG time domain
F2 Signal kurtosis
F3 Zero crossing rate
F4 Hjorth mobility
F5 Hjorth complexity
F6 75th percentile
F7 Channel correlation
F8 EMG power EMG proxy
F9 Minimal EMG power
F10 Relative EMG burst amplitude
F11 Slow eye movement power EOG proxy
F12 Rapid eye movement power
F13, F14, F15, F16 Relative power in \(\alpha ,\beta ,\theta ,\delta\)-bands EEG frequency domain
F17, F18, F19, F20, F21, F22 Power-ratios: \(\alpha /\delta ,\delta /\beta ,\delta /\theta ,\theta /\alpha ,\theta /\beta ,\alpha /\beta\)
F23 \((\theta +\delta )/(\alpha +\beta )\)
F24 Spectral edge frequency
F25 Median power frequency
F26 Mean spectral edge frequency difference
F27 Peak power frequency
F28 Spectral entropy
F29 Spindle probability Sleep event proxies
F30 Frequency stationarity
F31 Lowest adj. frequency similarity
F32 Largest CWT value
F33 Longest sleep spindle
  1. F1-6 and F13-25, 27, 28 are copied from [15], see Appendices A, B for a precise mapping between these features and those in [15]