Figure 11.

Summary of the main findings. A schematic of the segregated and parallel pathways for distinct processing of different motion signals in V1, V2, and V4 of macaque ventral visual pathway, encapsulating our findings with those of previous studies. Here we illustrate only the main feedforward projections. Essentially, the orientation domains mapped in V1, V2, and V4 not only process contour orientation signals but also process motion signals associated with motion axis and speed. In contrast, the direction-selective responses recorded in V2 thick stripes are independent of motion speed.