We describe effects of the asymmetry of cycles and non-stationarity in time series on the phase synchronization method which may lead to artifacts. We develop a modified method that overcomes these effects and apply it to study parkinsonian tremor. Our results indicate that there is synchronization between two different hands and provide information about the time delay separating their dynamics. These findings suggest that this method may be useful for detecting and quantifying weak synchronization between two non-stationary signals.
|Number of pages||9|
|Journal||Physica A: Statistical Mechanics and its Applications|
|State||Published - 1 Jul 2006|
Bibliographical noteFunding Information:
This work was supported in part by NIH Grants NS-35069, RR-13622, HD-39838 and AG-08812 and by the United States-Israel Bi-National Science Foundation.
- Synchronization decay