Interdependence between amplitude, frequency, and phase in the absence of internal resonance.

<p>Left: Oscillation amplitude vs frequency detuning. Full and dotted lines respectively correspond to stable and unstable oscillations in the open-loop configuration. The light-grey curve stands for the backbone approximation. Right: Frequency detuning vs phase shift. Full and dotted lines correspond to the same stability properties as in the left panel. The units of amplitude and frequency are arbitrary, and the phase shift varies in the interval (0, <i>π</i>). The values of the parameters used to obtain the curves are given in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0162365#pone.0162365.t001" target="_blank">Table 1</a>.