Extended Data Fig. 6: Verifying video-based limb tracking.

a, Example time series for the point on the finger, illustrating post-hoc processing to correct outliers. Raw is the time series output by DeepLabCut before correction. b, Scatter plot of X and Y coordinates of the finger site tracked in a, showing fewer outliers after correction. c, Example X and Y coordinate traces for site positions (defined in Fig. 4) after post-hoc processing. d, For one animal, averages (mean ± sem) of the elbow angle and the difference in elbow extensor and flexor activity. Values were computed over 100 ms epochs, and averages were assembled using the bottom (increasing flexor bias) and top (increasing extensor bias) 5% of epochs in each session based on the change in muscle activity difference over the epoch (n = 1340 total epochs in each group). e, As in d, but for wrist angle and the difference in wrist extensor and flexor activity (n = 1441 total epochs in each group). f, Same as in d, but for all animals (n = 3010 total epochs in each group). g, Same as in e, but for all animals (n = 3238 total epochs in each group).