Figure 1

The experimental set-up (i.e. real body, RB) and the experimental conditions:
From top to bottom, the avatar’s body is rendered fully opaque (0% transparency), or with 25%, 50% and 75% of transparency. The exemplifying picture was taken by MM and the person depicted is KK (both authors of the present manuscript). The virtual environment was programmed using the XVR system38 (VRMedia S.r.l., Pontedera, Italy) and the virtual body using the HALCA library39.