Figure 1.

Reactive gaze task used for mapping neural receptive fields and fitting models. A, Example traces of vertical eye position plotted as a function of time. B, Two-dimensional gaze trajectories (gray lines) from the reactive task for an example target in monkey M2. Also shown are the range of initial fixation positions (green square), the tolerance window (red circle), and the other possible targets used in this experimental session (gray circles) to map a neuron’s receptive field. C, The schematic illustrating the target gaze continuum concept, the distance between and beyond the target location and gaze are divided into 31 points, and the fit to neural activity is perform at each of the discrete locations to identify the best fit.