Detrended Fluctuation Analysis of EEG as a Measure of Depth of Anesthesia. - Mathieu Jospin; Pere Caminal; Erik W. Jensen; Hector Litvan; Montserrat Vallverdú; Michel M. R. F. Struys; Hugo E. M. Vereecke; Daniel T. Kaplan (IEEE Trans. Biomed. Eng., 2007)