Illustration of a single frame of a sample stimulus used in the biological motion detection experiment and results of the experiment.

<p>(A) An upright point-light walker (target) embedded in dynamic noise dots. Blue lines are for illustration purpose here and were not shown in the actual experiment. (B) The accuracy of the detection task was significantly higher for the toward condition (purple) than for the away condition (green). Exp_LM+ or Exp_LM-: average performance of the experimental group, with congruent local motion (i.e., noise made from scrambled targets) or incongruent local motion (i.e., noise made from scrambled walkers rendered with disparity signals opposite to those of the target). Ctrl: average performance of the control group, with local motion conditions combined. Error bars indicate one SEM. **<i>p</i><.01.