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. 2008 Nov 17;105(48):18669–18674. doi: 10.1073/pnas.0805752105

Fig. 5.

Fig. 5.

The effect of a linear gradient of intrinsic frequencies in a system of 3 × 27 coupled hair bundles with open boundary conditions. Four different frequency gradients are generated by a linear variation of pivotal stiffness over different ranges ΔKSP as indicated in D. (A) Frequency gradient along the Y axis characterized by the range of frequencies Δ f0 of spontaneous hair bundle movements relative to the frequency of the central hair bundle f̄0 as a function of coupling strength K. (B) Sensitivity |χ| in linear response of the central hair bundle vs. coupling strength K for stimulus frequency fs = f̄0 and stimulus amplitude F = 0.01 pN. (C) Quality Q̄ of spontaneous oscillations of the central hair bundle vs. coupling strength K. The dashed lines in A–C indicate the passive stiffness K̄SP of the central hair bundles. (D) Sensitivity vs. F for K = K̄SP = 0.6 mN ·m−1 and fs = f̄0. A–D, the pivotal stiffness of the central hair bundle is K̄SP = 0.6 mN ·m−1.