Fig. 2From: Classification of bruxism based on time-frequency and nonlinear features of single channel EEGThe relative spectral power distributed (mean ± SE) in four EEG frequency bands between two groups: healthy controls and bruxism patients with five EEG bipolar channels: F4C4, C4P4, Fp1F3, F3C3, and C4A1 during REM sleep. The ‘*’ represents alpha levels: p < 0.05 correspond to significant differencesBack to article page