Figure 7. Comparison of experimental and theoretical beat patterns for geometric clutch and curvature control mechanisms.

The fundamental mode $\tilde{\psi }\left(s\right)$ measured from a clamped-head sperm (blue dots) is shown together with calculated beat patterns as a function of the arc length s. (A) Geometric clutch (B) curvature control. Note that the fits are worse than those for the sliding-controlled case presented in Fig. 5A.