Movie 1.

Video of light event 1.29 showing angles as they are measured in this study throughout a full step. Plots across the top show the angles. From left to right: ShD (magenta), KHM (blue), KHL (yellow), KMM (light green), ETC (red). Darker lines on the plots indicate the angle as illustrated in the video. Lighter lines on the plots indicate the angles used in analyses after averaging two measurements and filtering.