Comment on "Kullback-Leibler and renormalized entropies: applications to electroencephalograms of epilepsy patients".
In a recent paper Quian Quiroga et al. [R. Quian Quiroga et al., Phys. Rev. E 62, 8380 (2000)] found renormalized entropy, formerly introduced as a complexity measure for the different regimes of a dynamical system, to be closely related to the standard Kullback-Leibler entropy. They assure this finding by reanalyzing electroencephalographic data of epilepsy patients, previously examined by exclusive use of renormalized entropy [K. Kopitzki et al., Phys. Rev. E 58, 4859 (1998)]. We argue that the general considerations undertaken by the authors and the experimental results do not justify this conclusion.
Kopitzki
K
K
Department of Neurological Science, University of Liverpool, Liverpool, United Kingdom.
Warnke
P C
PC
Saparin
P
P
Kurths
J
J
Timmer
J
J
D003627:Data Interpretation, Statistical; D004569:Electroencephalography; D019277:Entropy; D004827:Epilepsy / Q000503:physiopathology*; D006801:Humans