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| Figure 3: Cross-bicoherence of a sinusoidal set of two processes as in Eqs. (9) and (10) with nonlinear phase coupling (Eq. (12)) from x1 and x2 onto x1, only. Only a peak in the cross-bicoherence Bcoh121 occurs at the oscillation frequency of 4 Hz (a). Other cross-bicoherences at (4 Hz, 4 Hz) are insignificant (b-d). |
