caa a22 4500 445352620 CHVBK 20180317142849.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00221-011-2884-8 doi (NATIONALLICENCE)springer-10.1007/s00221-011-2884-8 Spatial localization investigated by continuous pointing duri ng visual and gravitoinertial changes [Elektronische Daten] [C. Scotto Di Cesare, L. Bringoux, C. Bourdin, F. Sarlegna, D. Mestre] In order to accurately localize an object, human observers must integrate multiple sensory cues related to the environment and/or to the body. Such multisensory integration must be repeated over time, so that spatial localization is constantly updated according to environmental changes. In the present experimental study, we examined the multisensory integration processes underlying spatial updating by investigating how gradual modifications of gravitoinertial cues (i.e., somatosensory and vestibular cues) and visual cues affect target localization skills. These were assessed by using a continuous pointing task toward a body-fixed visual target. The "single” rotation of the gravitoinertial vector (produced by off-axis centrifugation) resulted in downward pointing errors, which likely were related to a combination of oculogravic and somatogravic illusions. The "single” downward pitch rotation of the visual background produced an elevation of the arm relative to the visual target, suggesting that the rotation of the visual background caused an illusory target elevation (induced-motion phenomenon). Strikingly, the errors observed during the "combined” rotation of the visual background and of the gravitoinertial vector appeared as a linear combination of the errors independently observed during "single” rotations. In other words, the centrifugation effect on target localization was reduced by the visual background rotation. The observed linear combination indicates that the weights of visual and gravitoinertial cues were similar and remained constant throughout the stimulation. Springer-Verlag, 2011 Target localization nationallicence Multisensory integration nationallicence Continuous pointing nationallicence Visual cues nationallicence Vestibular cues nationallicence Somatosensory cues nationallicence Scotto Di Cesare C. Aix-Marseille Univ, UMR 6233 Institute of Movement Sciences, 13288, Marseille, France aut Bringoux L. Aix-Marseille Univ, UMR 6233 Institute of Movement Sciences, 13288, Marseille, France aut Bourdin C. Aix-Marseille Univ, UMR 6233 Institute of Movement Sciences, 13288, Marseille, France aut Sarlegna F. Aix-Marseille Univ, UMR 6233 Institute of Movement Sciences, 13288, Marseille, France aut Mestre D. Aix-Marseille Univ, UMR 6233 Institute of Movement Sciences, 13288, Marseille, France aut Experimental Brain Research Springer-Verlag 215/3-4(2011-12-01), 173-182 0014-4819 215:3-4<173 2011 215 221 https://doi.org/10.1007/s00221-011-2884-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-011-2884-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Scotto Di Cesare C. Aix-Marseille Univ, UMR 6233 Institute of Movement Sciences, 13288, Marseille, France aut NATIONALLICENCE 700 1- Bringoux L. Aix-Marseille Univ, UMR 6233 Institute of Movement Sciences, 13288, Marseille, France aut NATIONALLICENCE 700 1- Bourdin C. Aix-Marseille Univ, UMR 6233 Institute of Movement Sciences, 13288, Marseille, France aut NATIONALLICENCE 700 1- Sarlegna F. Aix-Marseille Univ, UMR 6233 Institute of Movement Sciences, 13288, Marseille, France aut NATIONALLICENCE 700 1- Mestre D. Aix-Marseille Univ, UMR 6233 Institute of Movement Sciences, 13288, Marseille, France aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 215/3-4(2011-12-01), 173-182 0014-4819 215:3-4<173 2011 215 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer