Figure 3.

Slant perceived as frontoparallel, normalized across observers, as measured with the frontoparallel slant judgment task interleaved between ball bounce blocks. This is shown for (a) the nonspinning ball group and (b) the spinning ball group. c, Overall recalibration effect averaged across observers in each group. This represents the slant perceived as frontoparallel at the end of each phase of the experiment, i.e., sessions 5, 11, and 15, as highlighted in a and b. Error bars all show SEM.