Dependence of pursuit responses in strabismic monkeys on the direction of target motion. Each vectorrepresents the direction and magnitude of the eye acceleration during the first 100 msec of pursuit elicited by a step-ramp pursuit target whose motion (15 deg/sec) began at the center of gaze and proceeded in 1 of the 12 “clock-face” directions indicated by the central rosette. A, Monkey SY, left eye viewing.B, Monkey SY, right eye viewing. C, Monkey PW, left eye viewing. D, Monkey PW, right eye viewing. Filled arrowheads indicate the cardinal directions.