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Effect of using a variable bandwidth filter width when computing CFC. Modulation Index values (y axis) for 40 Hz phase-amplitude coupled signals modulated at 6, 10, or 16 Hz over varying levels of SNR (x axis). A band pass filter with pass-band edge frequencies of 34 and 46 Hz, 30 and 50 Hz, or 24 and 56 Hz was used, depending on the frequency of amplitude modulation. Each data point is the average of 100 simulations. Significance level is p<0.05.
