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Synchronization in collectively moving inanimate and living active matter

Author

Listed:
  • Michael Riedl

    (Institute of Science and Technology Austria (IST Austria))

  • Isabelle Mayer

    (Institute of Science and Technology Austria (IST Austria))

  • Jack Merrin

    (Institute of Science and Technology Austria (IST Austria))

  • Michael Sixt

    (Institute of Science and Technology Austria (IST Austria))

  • Björn Hof

    (Institute of Science and Technology Austria (IST Austria))

Abstract

Whether one considers swarming insects, flocking birds, or bacterial colonies, collective motion arises from the coordination of individuals and entails the adjustment of their respective velocities. In particular, in close confinements, such as those encountered by dense cell populations during development or regeneration, collective migration can only arise coordinately. Yet, how individuals unify their velocities is often not understood. Focusing on a finite number of cells in circular confinements, we identify waves of polymerizing actin that function as a pacemaker governing the speed of individual cells. We show that the onset of collective motion coincides with the synchronization of the wave nucleation frequencies across the population. Employing a simpler and more readily accessible mechanical model system of active spheres, we identify the synchronization of the individuals’ internal oscillators as one of the essential requirements to reach the corresponding collective state. The mechanical ‘toy’ experiment illustrates that the global synchronous state is achieved by nearest neighbor coupling. We suggest by analogy that local coupling and the synchronization of actin waves are essential for the emergent, self-organized motion of cell collectives.

Suggested Citation

  • Michael Riedl & Isabelle Mayer & Jack Merrin & Michael Sixt & Björn Hof, 2023. "Synchronization in collectively moving inanimate and living active matter," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-41432-1
    DOI: 10.1038/s41467-023-41432-1
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    References listed on IDEAS

    as
    1. Kevin P. O’Keeffe & Hyunsuk Hong & Steven H. Strogatz, 2017. "Oscillators that sync and swarm," Nature Communications, Nature, vol. 8(1), pages 1-13, December.
    2. Gašper Kokot & Alexey Snezhko, 2018. "Manipulation of emergent vortices in swarms of magnetic rollers," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    3. Antoine Bricard & Jean-Baptiste Caussin & Debasish Das & Charles Savoie & Vijayakumar Chikkadi & Kyohei Shitara & Oleksandr Chepizhko & Fernando Peruani & David Saintillan & Denis Bartolo, 2015. "Emergent vortices in populations of colloidal rollers," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
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