bandpass-filtering a waveform
Why does phase-amplitude coupling arise for non-sinusoidal signals? Amplitude of the band-pass filtered harmonic will be impacted in a systematic way by the base oscillation. Here: increased beta at the trough and decreased beta at the peak of the base alpha-oscillation. pic.twitter.com/f1ZFaeiRcb
— Natalie Schaworonkow (@nschawor) December 3, 2019