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(A) Separated spectrograms of the fractal and oscillatory components averaged across all sensors underlying the macaque ECoG signals in the eyes-closed awake (from 0 to 5 min) and sleep (from 5 to 10 min) conditions. (B) Time courses of the power-law exponent, intercept and broadband powers derived from the power-law fitting of the fractal spectrogram. (C) Scatter plots and histograms of the power-law exponent and the log-power intercept in wakefulness and sleep
