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. 2011 May 25;6(5):e19696. doi: 10.1371/journal.pone.0019696

Figure 6. The power spectra for a single oscillator in the presence of noise and external harmonic forcing for Inline graphic, Inline graphic and different values of the external force amplitude Inline graphic (indicated in the figure).

Figure 6

The eigenfrequency is marked as Inline graphic. The frequency of the external forcing is Inline graphic. For convenience of the comparison of the results, the spectral power density Inline graphic is not normalized here.