Figure 1. Experimental design and analyses.

(a) Schematic of the stimulus display (not to scale) showing the fixation target (cross), gaze position (eye), stimulus (bar) and RF position (dashed ellipse). Blue arrows indicate gaze displacements (real microsaccades) and red arrows indicate stimulus displacements (simulated microsaccades). (b) Schematic of a few seconds of data recordings: eye position (blue), bar position (red) and spikes from a single neuron (black vertical lines). Blue dotted lines indicate the onsets of real microsaccades in the eye position trace. Red dotted lines indicate the onsets of simulated microsaccades in the bar position trace. Brackets indicate the amount of time around each event (‘real ‘or ‘simulated' microsaccade) used to calculate the PMTH. (c) Rasters of spikes (from b) aligned to real microsaccades (left) and simulated microsaccades (right).