Abstract
For time series exhibiting strong periodicities, standard (linear) surrogate methods are not useful. We describe a new algorithm that can test against the null hypothesis of a periodic orbit with uncorrelated noise. We demonstrate the application of this method to artificial data and experimental time series, including human electrocardiogram recordings during sinus rhythm and ventricular tachycardia.
- Received 18 January 2001
DOI:https://doi.org/10.1103/PhysRevLett.87.188101
©2001 American Physical Society