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| Figure 1: Auto-bicoherence of a sinusoidal process as in Eq. (9) with (a) and without (b) phase coupling (Eq. (11)). In the case of present phase-coupling at frequency ω1=4 Hz and ω2=9 Hz (a), the auto-bicoherence exhibits a clear peak, which is significant. For absent phase-coupling (b) no peak occurs, the auto-bicoherence is not significant. |
