Statistical analysis of the major axis of the perturbation response ellipses during baseline pursuit in oblique directions. Each histogram shows the distribution of the angles of the major axis of the ellipse that provided the best fit to the resampled perturbation response functions. Vertical dashed lines with long dashes indicate the direction of baseline target motion and pursuit. Vertical dashed lines with short dashes indicate the horizontal direction nearest to the direction of baseline pursuit. The three columns show data for the three monkeys. From top to bottom, the four rows show data for baseline oblique pursuit to the right and up (R&U), left and up (L&U), left and down (L&D), and right and down (R&D).