FIG. 3.

Tracings of the raw data for 1 finger in 1 subject and the fitted equation demonstrating the analysis methods to quantify the amplitude and decay of rapid hand opening and closing. Blue tracing shows the raw movement of a finger or thumb. Inverted blue triangles identify the “peaks,” whereas the green triangles identify the “trough.” Black crosses represent the magnitude of the difference between the peaks and troughs. Black solid line is the curve fitted to the differences between peaks and troughs.