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Cited by 408

The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.

Information transfer and behavioural inertia in starling flocks

Open access
Attanasi, Alessandro, Cavagna, Andrea, Del Castello, Lorenzo, Giardina, Irene, Grigera, Tomas S., Jelić, Asja, Melillo, Stefania, Parisi, Leonardo, Pohl, Oliver, Shen, Edward, Viale, Massimiliano·2014·Nature Physics
DOI 10.1038/nphys3035
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Abstract

Collective decision-making in biological systems requires all individuals in the group to go through a behavioural change of state. During this transition fast and robust transfer of information is essential to prevent cohesion loss. The mechanism by which natural groups achieve such robustness, however, is not clear. Here we present an experimental study of starling flocks performing collective turns. We find that information about direction changes propagates across the flock with a linear dispersion law and negligible attenuation, hence minimizing group decoherence. These results contrast starkly with present models of collective motion, which predict diffusive transport of information. Building on spontaneous symmetry breaking and conservation-law arguments, we formulate a theory that correctly reproduces linear and undamped propagation. Essential to this framework is the inclusion of the birds’ behavioural inertia. The theory not only explains the data, but also predicts that information transfer must be faster the stronger the group’s orientational order, a prediction accurately verified by the data. Our results suggest that swift decision-making may be the adaptive drive for the strong behavioural polarization observed in many living groups. How do flocks of birds remain cohesive while dodging predators? A study tracking up to 400 starlings reveals that information propagates in a linear fashion and with no attenuation, meaning that the language of phase transitions in correlated materials can be used to describe flocking behaviour.

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Metadata

Authors
Attanasi, A., Cavagna, A., Del Castello, L., Giardina, I., Grigera, T. S., Jelić, A., Melillo, S., Parisi, L., Pohl, O., Shen, E., & Viale, M.
Venue
Nature Physics
Publisher
Springer Science and Business Media LLC
Published
2014-07-27
Volume
10
Issue
9
Pages
691-696
ISSN
  • 1745-2473 (ISSN-L)
  • 1745-2481
DOI
10.1038/nphys3035
OpenAlex
W2067039683
Cited by
408
References
47
FWCI
34.29
Type
journal article
Language
en
Open access
green

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