Fig. S6.

Magnification of a spatial smooth and temporally filtered noise can look like a real signal. (A) Frames and time slices from a synthetic 300-frame video created by replicating a single frame 300 times and adding a different realistic noise pattern to each frame. (B) Corresponding frame and time slices from the synthetic video motion magnified 600$\times$ in a temporal band of 40 Hz to 60 Hz. Time slices from the same parts of each video are shown on the right for comparison.