2013
DOI: 10.1038/srep01956
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Breakup and then makeup: a predictive model of how cilia self-regulate hardness for posture control

Abstract: Functioning as sensors and propulsors, cilia are evolutionarily conserved organelles having a highly organized internal structure. How a paramecium's cilium produces off-propulsion-plane curvature during its return stroke for symmetry breaking and drag reduction is not known. We explain these cilium deformations by developing a torsional pendulum model of beat frequency dependence on viscosity and an olivo-cerebellar model of self-regulation of posture control. The phase dependence of cilia torsion is determin… Show more

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Cited by 13 publications
(15 citation statements)
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“…The sequence of turning the electromagnets on and off is calculated for the required mechanical oscillator, such as penguin pectoral fins [2,7] or the pectoral fins of Clione antarctica [19][20][21] or fly wings [22] or the cilia of a paramecium [23,24]. Then, the power supply to the electromagnets is sequenced by using relays ( Fig.…”
Section: Force and Efficiency Of The Hemispherical Motormentioning
confidence: 99%
See 3 more Smart Citations
“…The sequence of turning the electromagnets on and off is calculated for the required mechanical oscillator, such as penguin pectoral fins [2,7] or the pectoral fins of Clione antarctica [19][20][21] or fly wings [22] or the cilia of a paramecium [23,24]. Then, the power supply to the electromagnets is sequenced by using relays ( Fig.…”
Section: Force and Efficiency Of The Hemispherical Motormentioning
confidence: 99%
“…1(a)) of a paramecium whose axial temporal posture is shown in Fig. 7(c) [23]. Next, the single ball was replaced by a three-ball mass.…”
Section: Mapping Of the Fin Motion On The Hemisphericalmentioning
confidence: 99%
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“…It turns out that all animals, including swimming and flying animals also have motion controlling mechanisms that are self-regulating. For example, we have accurately calculated the motion of the cilia of a paramecium in water [16], and the planar motion of a bat in a room [10] using olivocerebellar control models, namely, the FitzHugh-Nagumo models. These wakes signify the similarity between temporal [10,17], or spatiotemporal [7] control and transitional turbulence mechanisms of hydrodynamics.…”
Section: Introductionmentioning
confidence: 99%