Fig 1.
The participant is seated at a table on which a raised platform is placed. The participant’s right hand is placed on top of the platform, but occluded from view by a divider. The left hand is placed below the platform. During the experiment, participants focus their attention on a realistic silicone hand placed in front of them, while their real hand and the fake hand are brushed by the experimenter in either a synchronous or asynchronous fashion. At the end of each trial, participants use their left hand to indicate where they think their right index finger is located, by moving their left index finger over a tape measure placed on the platform on the side of the experimenter. Additionally, they answered nine questions related to their subjective experience during the trial.
Table 1.
Questionnaire on subjective experience of the rubber hand illusion assessed after each trial.
Fig 2.
Average proprioceptive drift in cm in the different conditions of experiment 1 (angry vocal, happy vocal, no sound and non-vocal sounds) in synchronous or asynchronous stroking.
Error bars indicate standard error.
Fig 3.
Average proprioceptive drift in cm for the data pooled into emotion (angry and happy vocal) and no emotion (no sound and non-vocal sounds) with synchronous or asynchronous stroking.
Error bars indicate standard error.
Fig 4.
Average proprioceptive drift in cm in the different conditions of experiment 2 (no sound, angry vocal and neutral vocal) in synchronous and asynchronous stroking.
Error bars indicate standard error.
Fig 5.
Average scores of the answers to the nine questions related to the subjective strength of the rubber hand illusion as measured in experiment 1 (A) and 2 (B).
Error bars indicate standard error.