Before revision:  We employ Uniform Phase Empirical Mode Decomposition (UPEMD) extracting 0.1 Hz stationary modes from both signals and use  k-means clustering to analyze the outcomes.
After revision:  We employ Uniform Phase Empirical Mode Decomposition (UPEMD) extracting 0.1 Hz stationary modes from both signals and use random forest machine learning and k-means clustering to analyze the outcomes.