Noise-Assisted Instantaneous Coherence Analysis of Brain Connectivity
Figure 4
Time-frequency coherence based on the mixed analytic matrix for X-Y (a), X-Z (b), and Y-Z (c). A random noise complex matrix is superposed to the analytic matrix of data for facilitating the calculation of coherence. From these plots, we can see that the obtained coherence reflects the designed coupling patterns in the synthetic signals but contains a lot of artifacts scattered in the spectra.
