Fig. 2.

Participants sat in front of the table, facing the box, and were asked to insert their left hand into the left compartment of the box, while the rubber hand was positioned in the compartment on the right, aligned with participant's left shoulder. Both the participant's and rubber hand's left index fingers were located on the corresponding marked spots. A) While the box was open, participants were asked to look inside and observe the rubber hand. In particular, during the stroking conditions, participants were instructed to follow the brush while it was stroking the rubber hand's forearm. B) Before and after each condition, with the box closed and covered by a black carton, participants had to perform a proprioceptive judgement (see Section 2.4).