Figure 8.
Parameters of Gaussian curve fits to the probability density functions for peak velocity in Figure 7B. Each trace in Figure 7B was fitted, through least-squares methods, to a Gaussian function (i.e., y = Ke−α, where α = [(v − v0)/σv]2, K is the peak amplitude, v0 is the mean, and σv is the SD. The Gaussian's parameters K (peak), v0 (mean), and σv (SD) are shown, respectively, in A–C versus the experimental condition. SDs of the estimates of the parameters are smaller than the height of the symbols of the plot for all values shown in the plot, and therefore are not visible. Labels for the conditions are as in Figure 2. Open squares and solid lines refer to data from PD patients; filled circles and dotted lines refer to data from control (CTL) subjects.