Figure 1. Schematic side view of the experimental setup.

(A) Using shutter glasses participants had a 3D percept of a life-size avatar, who carried out the actions toward them. Reflective markers on the hand and glasses were used for tracking the hand and the head movement, respectively. Stimuli: (B) The peak frame of the dynamic fist bump adaptor. (C) the peak frame of the dynamic punch adaptor. Each adaptor was shown repeatedly. After adaptation, participants classified ambiguous test actions (one example shown in (D) Note, depicting the original dynamic stimuli as a static figure attenuates differences between tests and adaptor stimuli. The avatar is a Rocketbox asset.