Video 1. Heartbeat visualization, digitization and segmentation.
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DOI: 10.7554/eLife.20851.004
One-third speed video of the 10 day adult female displayed in Figure 1C–E, with heart wall position calls (yellow) and the attending transformation into heart chamber diameter as a function of time in a 1 s streaming window. The initiation and end of each contraction are specified by a red and blue triangle, respectively. Note the periodic reversal in the direction of heartbeat peristalsis.