Fig. 13.
Diagram showing a simplified flow of signals through the cortical pursuit system. The left andright sides of the diagram indicate the left and right eyes and hemispheres, respectively. At the level of the eyes, the signals are divided according to nasal and temporal hemiretina. The values of the aXX coefficients indicate the percentage of cells in each MT that receive inputs from the eye of origin. The values of the bXXcoefficients indicate the strength of connection from each MT to the “higher” parts of the cortical pursuit system (CPS), which may include area MST and the frontal pursuit area. Thearrows inside each CPS indicate that the output signals from each are driven only by elements preferring ipsilaterally directed target motion. P indicates the output of the pursuit system.