Upper panel – Experiment 4. Left upper panel: Participants received a tactile stimulation either on their chest (to study the peri-trunk space) or on their right hand (to study the peri-hand space), while the right hand was placed on the chest. Right upper panel: Multisensory facilitation (in ms; negative values indicate multimodal audio-tactile RT <unimodal baseline tactile trials) as a function of sound distance at the moment of tactile stimulation (D1 indicates the smallest distance, while D6 indicates the largest distance) and the sound’s direction (in solid for looming sounds and in dashed for receding sounds). RTs are averaged for chest and hand stimulation. The black dashed horizontal line indicates baseline, i.e., RT to the fastest unimodal tactile stimulation, * indicate a significant facilitation effect with respect to baseline (p < 0.05 Bonferonni-corrected) and # indicates a significant (p < 0.05) multisensory facilitation that did not survive correction for multiple comparisons; Error bars indicate +/−1 S.E.M. Lower panel – Experiment 5. Left lower panel: Participants received a tactile stimulation either on their right hand (to study the peri-hand space), while the right hand was placed either near the trunk or far from the trunk. Lower right panel; Multisensory facilitation (in ms; negative values indicate multimodal audio-tactile RT <unimodal baseline tactile trials) as a function of sound distance at the moment of tactile stimulation (D1 indicates the smallest distance, while D6 indicates the largest distance) and the posture of the hand with respect to the trunk (RT facilitation is represented in dashed when the hand was placed near the trunk, and in solid when the hand was placed far from the trunk). The black dashed horizontal line indicates baseline, i.e., RT to the fastest unimodal tactile stimulation, and * indicate a significant facilitation effect with respect to baseline (p < 0.05, Bonferroni-corrected). Error bars indicate +/−1 S.E.M. (The human figure was created by JNP, using ‘Poser 10′ software (http://my.smithmicro.com/poser-3d-animation-software.html)).