title: Slow changing postural cues cancel visual field dependence on self-tilt detection.
abstract: Interindividual differences influence the multisensory integration process involved in spatial perception. Here, we assessed the effect of visual field dependence on self-tilt detection relative to upright, as a function of static vs. slow changing visual or postural cues. To that aim, we manipulated slow rotations (i.e., 0.05° s(-1)) of the body and/or the visual scene in pitch. Participants had to indicate whether they felt being tilted forward at successive angles. Results show that thresholds for self-tilt detection substantially differed between visual field dependent/independent subjects, when only the visual scene was rotated. This difference was no longer present when the body was actually rotated, whatever the visual scene condition (i.e., absent, static or rotated relative to the observer). These results suggest that the cancellation of visual field dependence by dynamic postural cues may rely on a multisensory reweighting process, where slow changing vestibular/somatosensory inputs may prevail over visual inputs.
authors.affiliation: Aix-Marseille Université, CNRS, ISM UMR 7287, France; Cognitive Neuroscience Department and Cognitive Interaction Technology - Center of Excellence, Bielefeld University, Germany. Electronic address: cecile.scotto@gmail.com.
authors.forename: C
authors.initials: C
authors.lastname: Scotto Di Cesare
authors.affiliation: Aix-Marseille Université, CNRS, ISM UMR 7287, France.
authors.forename: T
authors.initials: T
authors.lastname: Macaluso
authors.affiliation: Aix-Marseille Université, CNRS, ISM UMR 7287, France.
authors.forename: D R
authors.initials: DR
authors.lastname: Mestre
authors.affiliation: Aix-Marseille Université, CNRS, ISM UMR 7287, France.
authors.forename: L
authors.initials: L
authors.lastname: Bringoux
mesh_terms: D003463:Cues; D005260:Female; D006801:Humans; D008297:Male; D009949:Orientation / Q000502:physiology; D011434:Proprioception / Q000502:physiology*; D012399:Rotation; D014794:Visual Fields / Q000502:physiology*; D055815:Young Adult
keywords: Field dependence; Interindividual differences; Multisensory integration; Spatial orientation; Tilt perception