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Table 1 Description of the 30 features that were computed for each EEG channel. The five frequency bands are the delta, theta, alpha, lower beta and upper beta

From: Automatic sleep stage classification based on subcutaneous EEG in patients with epilepsy

Feature number

Feature description

1–5

Mean power in the five frequency bands

6–10

Variance of the power distribution in the five frequency bands

11–15

Skewness of the power distribution in the five frequency bands

16–20

Kurtosis of the power distribution in the five frequency bands

21–25

Shannon entropy of the power distribution in the five frequency bands

26–30

Duration of the activation of the power in the five frequency bands