The experiment consisted of two blocks, right and left hand blocks. The order was counterbalanced across the participants.
A pre-test proprioceptive location judgment was obtained by asking the participants, with their eyes open, to indicate where it
felt like the tip of their middle finger was located by reporting the corresponding number along a ruler, which was laid across
the table, parallel to their frontal plane. We instructed participants to report the location of their middle finger as accurately as
possible because the task is intended to measure participants’ body sense. Participants were not informed that this task could
also be used to measure illusional location. A random ruler offset that varied from trial to trial (and from pre to post-test) was
used to discourage the participants from re-using verbal labels from previous trials, and to prevent participants from using a
particular strategy or from being influenced by demand characteristics