Modelling 3D saccade generation by feedforward optimal control
Fig 9
3D oculomotor behavior and saccade dynamics, resulting from minimizing the AED cost.
(A,B) 3D trajectories in the (y,z) and (x,z) views. Although the torsional range is constrained to a width of σx = 4.88 deg, the eye is not confined to Listing’s Plane. (C) Saccade dynamics. Black dots: data from 1500 saccades starting from randomized initial positions in randomized directions. When starting from straight-ahead, saccades follow a clear saturating amplitude-peak velocity relation (red dots: purely horizontal saccades, blue dots: purely vertical saccades; green dots: 45 deg oblique saccades.) Note that vertical saccades are slowest and horizontal saccades are fastest. (D) All trajectories were nearly straight, as most correlations between the horizontal and vertical velocity profiles were near 1.0.