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Low-Pass filtering approach via empirical mode decomposition improves short-scale entropy-based complexity estimation of QT interval variability in long QT syndrome type 1 patients

Bari, Vlasta; Marchi, Andrea; De Maria, Beatrice; Girardengo, Giulia; George, Alfred L.; Brink, Paul A.; Cerutti, Sergio; Crotti, Lia; Schwartz, Peter J.; Porta, Alberto (MDPI, 2014-09-05)

Entropy-based complexity of cardiovascular variability at short time scales is largely dependent on the noise and/or action of neural circuits operating at high frequencies. This study proposes a technique for canceling ...