caa a22 4500 445353953 CHVBK 20180317142853.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s00221-011-2717-9 doi (NATIONALLICENCE)springer-10.1007/s00221-011-2717-9 Integration of vestibular and proprioceptive signals for spatial updating [Elektronische Daten] [Ilja Frissen, Jennifer Campos, Jan Souman, Marc Ernst] Spatial updating during self-motion typically involves the appropriate integration of both visual and non-visual cues, including vestibular and proprioceptive information. Here, we investigated how human observers combine these two non-visual cues during full-stride curvilinear walking. To obtain a continuous, real-time estimate of perceived position, observers were asked to continuously point toward a previously viewed target in the absence of vision. They did so while moving on a large circular treadmill under various movement conditions. Two conditions were designed to evaluate spatial updating when information was largely limited to either proprioceptive information (walking in place) or vestibular information (passive movement). A third condition evaluated updating when both sources of information were available (walking through space) and were either congruent or in conflict. During both the passive movement condition and while walking through space, the pattern of pointing behavior demonstrated evidence of accurate egocentric updating. In contrast, when walking in place, perceived self-motion was underestimated and participants always adjusted the pointer at a constant rate, irrespective of changes in the rate at which the participant moved relative to the target. The results are discussed in relation to the maximum likelihood estimation model of sensory integration. They show that when the two cues were congruent, estimates were combined, such that the variance of the adjustments was generally reduced. Results also suggest that when conflicts were introduced between the vestibular and proprioceptive cues, spatial updating was based on a weighted average of the two inputs. Springer-Verlag, 2011 Multisensory integration nationallicence Locomotion nationallicence Vestibular nationallicence Proprioceptive nationallicence Spatial updating nationallicence Maximum likelihood estimation nationallicence Frissen Ilja Max Planck Institute for Biological Cybernetics, Multisensory Perception and Action Group, Tübingen, Germany aut Campos Jennifer Max Planck Institute for Biological Cybernetics, Human Perception, Cognition, and Action Group, Tübingen, Germany aut Souman Jan Max Planck Institute for Biological Cybernetics, Multisensory Perception and Action Group, Tübingen, Germany aut Ernst Marc Max Planck Institute for Biological Cybernetics, Multisensory Perception and Action Group, Tübingen, Germany aut Experimental Brain Research Springer-Verlag 212/2(2011-07-01), 163-176 0014-4819 212:2<163 2011 212 221 https://doi.org/10.1007/s00221-011-2717-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-011-2717-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Frissen Ilja Max Planck Institute for Biological Cybernetics, Multisensory Perception and Action Group, Tübingen, Germany aut NATIONALLICENCE 700 1- Campos Jennifer Max Planck Institute for Biological Cybernetics, Human Perception, Cognition, and Action Group, Tübingen, Germany aut NATIONALLICENCE 700 1- Souman Jan Max Planck Institute for Biological Cybernetics, Multisensory Perception and Action Group, Tübingen, Germany aut NATIONALLICENCE 700 1- Ernst Marc Max Planck Institute for Biological Cybernetics, Multisensory Perception and Action Group, Tübingen, Germany aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 212/2(2011-07-01), 163-176 0014-4819 212:2<163 2011 212 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer