Figure 8. Read-out of SC motor activity for visual and auditory saccades.

A read-out model involving graded weights depending on the location of neurons in the SC (A). The weights were fit based on the motor activity on visual trials, combining all fixations and producing an eye-centered estimate of target location. B. Results of the simulation indicate that the model can successfully calculate target location from the input pattern, regardless of modality. C. Behavioral estimates of target location for visual and auditory trials (data from trials during the recording of the neurons). A slight compression of auditory space relative to visual space is seen both for the model (B) and the actual behavior (C).