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Fig. 7. On average, wingbeat frequency (WBF) is modulated independently of the wingbeat amplitude (WBA) response when presented with both visual and mechanical pitch oscillations over a range of angular velocities. (A) Amplitude of sine fit to averaged WBA data versus peak angular velocity (mean ± S.E.M., visual N=11, mechanical N=9). (B) Amplitude of sine fit to averaged WBF data versus peak angular velocity (mean ± S.E.M., visual N=11, mechanical N=9).