Fig. 8.

Relationship between weighting of 2 stimuli and the ratio of eye acceleration evoked by single stimuli. Each symbol shows weights for 1 of the 2 targets, plotted as a function of the ratio of the eye acceleration produced by the brighter to the dimmer stimulus when presented singly. Filled and open symbols plot weights for the bright and dim stimuli, respectively. Data were obtained from the first 50 ms of pursuit. A–C: monkey G. D–F: monkey P. A and D: superimposed stimuli. B and E: stimuli presented 3° eccentric along orthogonal axes. C and F: stimuli presented 6° eccentric along orthogonal axes. In the graphs for separated stimuli, the solid and dashed lines show the regression lines for the bright and dim targets, respectively.