In this study, inactivation of PTV resulted in an upward shift in preferred velocities of some area 17 cells and in changes in their velocity preferences, with a tendency of a shift to higher velocities of over a third of area 19 neurons. Thus, it appears PTV cells providing the feedback projections to area 19 prefer higher velocities than the preferred velocities of area 19 cells based on the velocities preferred by the integrated input to area 19. Due to the fact that the highest velocity tested by us was 66°/s, and it was lower than the cut-off velocities of most area 19 neurons when PTV cortex was intact, we were unable to assess if inactivation of PTV resulted also in an upward shifts in the cut-off velocities of a substantial proportion of area 19 neurons. Nevertheless, in a couple of area 19 cells, cooling resulted in reversible upward shifts of their high cut-off velocities. Thus, the feedback from PTV might normally suppress the responses of area 19 cells to fast moving stimuli.