Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session M12: Self-Organization in Biological Systems: Subcellular to Tissue Scales II
11:30 AM–2:18 PM,
Wednesday, March 17, 2021
Sponsoring
Units:
DBIO DSOFT
Chair: Francesca Serra, Johns Hopkins University Moumita Das, Rochester Institute of Technology
Abstract: M12.00004 : Synchronization and noise in arrays of hydrodynamically coupled cilia
12:30 PM–12:42 PM
Live
Presenter:
Anton Solovev
(Tech Univ Dresden)
Author:
Anton Solovev
(Tech Univ Dresden)
can display coordinated beating in the form of metachronal (=traveling) waves[1].
Past research proposed hydrodynamic coupling as a mechanism of synchronization,
yet if such synchronization is stable in the presence of noise (corresponding to active fluctuations of cilia beating)
has been addressed only for n=2 cilia[2], while the question of multi-stable synchronization in cilia carpets (n>>1) remains open.
Using multi-scale simulations[3] that map hydrodynamic interactions between cilia on a generalized Kuramoto model of phase oscillators with local coupling, we predict many multi-stable metachronal wave states, yet only one or two of them have considerable basins of attraction.
In the presence of noise,
we observe stochastic transitions between different waves.
Active noise excites long-wavelength perturbations (which take relatively long time to decay).
Strong noise impedes global synchronization and causes a break-up into smaller synchronized patches.
(similar to a chimera state).
[1] W. Gilpin, M.S. Bull, and M. Prakash, Nat Rev Phys 2, 74 (2020)
[2] R. Ma et al., Phys. Rev. Lett. 113, 048101 (2014)
[3] Solovev, B.M. Friedrich, preprint arXiv:2010.08111 (2020)
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