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. 2015 Jul 6;12(108):20141358. doi: 10.1098/rsif.2014.1358

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© 2015 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 2. — Properties of metachronal waves. (a) Radial u_r(r*, θ, t) and (b) tangential u_θ(r*, θ, t) components of the flow field, measured at r* = 1.3 R. Phase defects are evidenced by white circles. (c) Correlation function C(Δθ, Δt) for a single representative Volvox colony, (d) its fitted correlation function and the (e) corresponding error. The scale bar for (c–e) is the same. (f) Power spectrum of the autocorrelation function C(0, Δt) (for one Volvox colony), calculated for three distinct values of θ. (g) Average beat frequency as a function of polar angle θ for n = 60 different colonies (black) as well as the ensemble average (white dotted).

Inline graphic — Properties of metachronal waves. (a) Radial u_r(r*, θ, t) and (b) tangential u_θ(r*, θ, t) components of the flow field, measured at r* = 1.3 R. Phase defects are evidenced by white circles. (c) Correlation function C(Δθ, Δt) for a single representative Volvox colony, (d) its fitted correlation function and the (e) corresponding error. The scale bar for (c–e) is the same. (f) Power spectrum of the autocorrelation function C(0, Δt) (for one Volvox colony), calculated for three distinct values of θ. (g) Average beat frequency as a function of polar angle θ for n = 60 different colonies (black) as well as the ensemble average (white dotted).