title: The effect of limb crossing and limb congruency on multisensory integration in peripersonal space for the upper and lower extremities.
abstract: The present study investigated how multisensory integration in peripersonal space is modulated by limb posture (i.e. whether the limbs are crossed or uncrossed) and limb congruency (i.e. whether the observed body part matches the actual position of one's limb). This was done separately for the upper limbs (Experiment 1) and the lower limbs (Experiment 2). The crossmodal congruency task was used to measure peripersonal space integration for the hands and the feet. It was found that the peripersonal space representation for the hands but not for the feet is dynamically updated based on both limb posture and limb congruency. Together these findings show how dynamic cues from vision, proprioception, and touch are integrated in peripersonal limb space and highlight fundamental differences in the way in which peripersonal space is represented for the upper and lower extremity.
authors.affiliation: Laboratory of Cognitive Neuroscience, Brain Mind Institute, École Polytechnique Fédérale de Lausanne, Switzerland. m.vanelk@uva.nl
authors.forename: Michiel
authors.initials: M
authors.lastname: van Elk
authors.forename: Joachim
authors.initials: J
authors.lastname: Forget
authors.forename: Olaf
authors.initials: O
authors.lastname: Blanke
mesh_terms: D005260:Female; D006801:Humans; D035002:Lower Extremity; D008297:Male; D010550:Personal Space; D011187:Posture; D011434:Proprioception / Q000502:physiology*; D011930:Reaction Time; D013028:Space Perception / Q000502:physiology*; D014110:Touch / Q000502:physiology*; D034941:Upper Extremity; D014785:Vision, Ocular / Q000502:physiology*; D055815:Young Adult