Patterns in Posture: Chaotic Worms, Surprises from the Physics of Animal Behavior
Автор: Aspen Physics
Загружено: 2021-07-02
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Speaker: Greg Stephens, Vrije Universiteit Amsterdam & Okinawa Institute of Science andTechnology Graduate University
While the science of the living world is largely focused on the microscopic - say the expression of genes or the pattern of electrical activity among our nerve cells - these processes serve the greater evolutionary goals of the organism: to find food, avoid predators and reproduce. But how do we quantify the dynamics of entire organisms? What principles characterize living movement? Here I describe how the combination of computer vision for high-resolution posture measurement with theoretical ideas from physics has enabled new understanding of the behavior of organisms in natural motion. I illustrate this approach with animals of varying complexity, including in the nematode w o r m C. elegans where we find that variability in posture movements results, remarkably, from deterministic chaos.
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