Fig. 3From: Classification of bruxism based on time-frequency and nonlinear features of single channel EEGThe 28 features distributed (mean ± SD) in four EEG frequency bands: δ, θ, α, and β between two groups: healthy controls and bruxism patients with channel C4P4 during REM sleep. ‘*’ represent the alpha level (p < 0.05) for significant differenceBack to article page