Patient main sequence. Upper row represents saccade peak velocity as a function of saccade amplitude. Lower row represents saccade peak velocity as a function of saccadic maximum displacement. Gray dots correspond to the patient data. Thick colored lines represent the average behavior computed with an exponential fit. Thin colored lines represent the 95% confidence interval around the exponential fit. Red lines are used for rightward movements. Blue lines are used for leftward movements. Negative amplitudes (maximum displacements) correspond to leftward movements. Positive amplitudes (maximum displacements) represent rightward movements.