Fig. 35

Phase space portrait and divergence of nearby trajectories. A The top panel shows the orthogonal relationship between the forward and reversal behaviors, while the bottom panel shows the transition from reversal to an omega turn in the phase space. To aid visualization color coding is done by radial distance from the origin. B Escape response visualized in the phase planes. When the worm is hit with a laser impulse, it makes a reversal, followed by an omega turn and then resumes forward crawling. Color map encodes time in frames. C Divergence curves for the three different attractors. Y-axis shows the exponential of the divergence between neighboring trajectories plotted on a semilog scale on the y axis, each curve corresponds to a single worm (n = 12). λ _L is estimated by calculating the slope of the linear region. Boxplots show the range of λ _L obtained from different animals