Figure 8.

Other-related plastic changes in the PPS representation

The blue bubble represents the hand-centered PPS, whose gradual tonality represents the PPS as a continuous field graded with the proximity to the body when only the self-hand is present, as in (A). The proximity to someone else’s hand, irrespective of the other-hand position in space and regardless the perspective from which it is presented, as in (B, C, and D) induces a shrinkage of the hand-centered PPS boundary so that the portion of space previously coded as the self-hand PPS is recoded as the other-hand PPS (i.e., the orange bubble).