Figure 7.

Comparison of firing rate predictions; example of multiplicative gain-modulation effect. Top, Firing rates predicted by full nonlinear kinematic model, best linear model, best nonlinear velocity model, and best nonlinear position model. Bottom, True observed spike train (asterisks) and time-smoothed firing rate (solid). Firing rate smoothed here with a Gaussian kernel for which the width was chosen to approximately match the timescale of firing rate variations in top panel (for straightforward comparisons).