Le site de vulgarisation scientifique de l’Université de Liège. ULg, Université de Liège
spectral entropy

Spectral entropy characterises the disturbance present in a signal’s frequency spectrum: in general, a high value corresponds to an increase in irregularity or unpredictability (for instance, a uniform distribution of the power spectrum during awakening) while a low value corresponds to a high level of regularity (for instance, the concentration of the activity in the delta band during deep sleep).

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