Figure 3
From: Motor dysfunction and touch-slang in user interface data

Similarity distribution between PD, young, and elderly subjects according to shape. The figure reports the mean count of data points per shape. Shape acronyms: 1SCR = one finger scroll, 4SCA = four finger scale, 2SCR = two finger scroll, 3SCA = three finger scale, 4SCR = four finger scroll, 1DRA = one finger drag, 2FHS = two finger horizontal scale, 2DRA = two finger drag, 2FVS = two finger vertical scale, 3SCR = three finger scroll, 3ROT = three finger rotate, L2VT = lock 2 and one finger vertical tilt, 2ROT = two finger rotate [two hand], 4DRA = four finger drag, 3DRA = three finger drag, 2SPL = two finger split, L2FT = lock 2 and one finger horizontal tilt (shown here are 17/18 shapes; two finger rotate [one hand] is on a different scale). Bottom panels show overlaid finger traces from a representative shape, showing PD-Y similarity.