Data from: Resolving coiled shapes reveals new reorientation behaviors in C. elegans

  • Onno D. Broekmans (Contributor)
  • Jarlath B. Rodgers (Contributor)
  • William S. Ryu (Contributor)
  • Greg J. Stephens (Contributor)



We exploit the reduced space of C. elegans postures to develop a novel tracking algorithm which captures both simple shapes and also self-occluding coils, an important, yet unexplored, component of 2D worm behavior. We apply our algorithm to show that visually complex, coiled sequences are a superposition of two simpler patterns: the body wave dynamics and a head-curvature pulse. We demonstrate the precise ΩΩ-turn dynamics of an escape response and uncover a surprising new dichotomy in spontaneous, large-amplitude coils; deep reorientations occur not only through classical ΩΩ-shaped postures but also through larger postural excitations which we label here as δδ-turns. We find that omega and delta turns occur independently, suggesting a distinct triggering mechanism, and are the serpentine analog of a random left-right step. Finally, we show that omega and delta turns occur with approximately equal rates and adapt to food-free conditions on a similar timescale, a simple strategy to avoid navigational bias.,Foraging datasetForaging.tar.gzEscape response datasetEscapeResponse.tar.gz,
Date made available1 Jan 2016
PublisherUnknown Publisher

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