Comparison of (a) original and (b) motion magnified results showing pneumatic-induced motion of an eardrum without sealing the ear canal. The spatiotemporal slices for the blue, green, red, and yellow lines are shown in (a-1 through a-4 and b-1 through b-4, respectively). Note that the motion magnification reveals around 8 peaks of the cyclical motion. (c) Comparison of motions at blue line of interest between the original and motion magnified results. (d) Spatial and temporal variations of the eardrum mobility can be examined after motion is amplified. This dataset was acquired from a healthy adult volunteer, subject 1. The original and the motion magnified video results can be found in Video 2.