Phase Synchronization of Two Tremor - Related Neurons

The objective of the study was to investigate the presence of the phase-locking between a pair of physiological tremor signals from two closely located neurons in the thalamotomy area of a human brain. Most frequently used current methods detect both phase and amplitude correlations between tremor signals based on the stationary assumption of the signals. The correlation analysis method utilized in the present study only focuses on the phase synchronization of a pair of periodic or quasiperiodic signals. This method does not require the stationarity assumption of signals because it estimates the instantaneous tremor frequency series of tremor signals.