Figure 10.

Testing the spatial mapping hypothesis. A, Fixation control task. The monkey began by fixating a spot of light. After a delay, a probe appeared at one of four locations relative to the center of the neuron's RF. Then, after a random period of time, the probe stepped to the center of the neuron's RF. Using the visual responses to initial probe onset at the varying locations, we compared the curvature (B) and ramp (C) indices found in the fixation task with the same indices for the same neurons as found in the saccadic translation task. There were no significant correlations. It seems unlikely, therefore, that tuning in the saccade translation task represented a mapping of the presaccadic probe locations.