--- abstract: "We recently published a study of the reconstruction of passively travelled trajectories from optic flow. Perception was prone to illusions in a number of conditions, and not always veridical in the other conditions. Part of the illusionary reconstructed trajectories could be explained if we assume that the subjects based their reconstruction on the ego-motion percept obtained during the stimulus' initial moments. In the current paper, we test this hypothesis using a novel paradigm. If indeed the final reconstruction is governed by the initial percept, then additional, extra-retinal information that modifies the initial percept should predictably alter the final reconstruction. We supplied extra-retinal stimuli tuned to supplement the information that was underrepresented or ambiguous in the optic flow: the subjects were physically displaced or rotated at the onset of the visual stimulus. A highly asymmetric velocity profile (high acceleration, very low deceleration) was used. Subjects were required to guide an input device (in the form of a model vehicle; we measured position and orientation) along the perceived trajectory. We show for the first time that a vestibular stimulus of short duration can influence the perception of a much longer lasting visual stimulus. Perception of the ego-motion translation component in the visual stimulus was improved by a linear physical displacement; perception of the ego-motion rotation component by a physical rotation. This led to a more veridical reconstruction in some conditions, but it could also lead to less veridical reconstructions in other conditions." altloc: [] chapter: ~ commentary: ~ commref: ~ confdates: ~ conference: ~ confloc: ~ contact_email: ~ creators_id: [] creators_name: - family: Bertin given: R.J.V. honourific: '' lineage: '' - family: Berthoz given: A. honourific: '' lineage: '' date: 2001 date_type: published datestamp: 2002-03-08 department: ~ dir: disk0/00/00/21/22 edit_lock_since: ~ edit_lock_until: ~ edit_lock_user: ~ editors_id: [] editors_name: [] eprint_status: archive eprintid: 2122 fileinfo: /style/images/fileicons/application_pdf.png;/2122/3/Paper20020110.pdf full_text_status: public importid: ~ institution: ~ isbn: ~ ispublished: ~ issn: ~ item_issues_comment: [] item_issues_count: 0 item_issues_description: [] item_issues_id: [] item_issues_reported_by: [] item_issues_resolved_by: [] item_issues_status: [] item_issues_timestamp: [] item_issues_type: [] keywords: 'navigation, orientation, optic flow, visuo-vestibular interaction, virtual reality' lastmod: 2011-03-11 08:54:54 latitude: ~ longitude: ~ metadata_visibility: show note: ~ number: ~ pagerange: ~ pubdom: FALSE publication: ~ publisher: ~ refereed: FALSE referencetext: |- Bakker NH, Werkhoven PJ, Passenier PO (1999) The effects of proprioceptive and visual feedback on geographical orientation in virtual environments. Presence 8: 36-53 Bertin RJV, Israël I, Lappe M (2000) Perception of two-dimensional, simulated ego-motion trajectories from optic flow. Vision Res. 40: 2951-2971 Bertin RJV, Israël I (2002) Optic flow based perception of two-dimensional trajectories: the effects of a single landmark. Submitted for publication in Vision Research Brandt T, Bartenstein P, Janek A, Dieterich M (1998) Reciprocal inhibitory visual-vestibular interaction. Visual motion stimulation deactivates the parieto-insular vestibular cortex. Brain 121 ( Pt 9): 1749-1758 Buizza A, Leger A, Droulez J, Berthoz A, Schmid R (1980) Influence of otolithic stimulation by horizontal linear acceleration on optokinetic nystagmus and visual motion perception. Exp.Brain Res. 39: 165-176 Conditt MA, Gandolfo F, Mussa-Ivaldi FA (1997) The Motor System Does Not Learn the Dynamics of the Arm by Rote Memorization of Past Experience. J.Neurophysiol. 78: 554-560 Crowell JA, Banks MS, Shenoy KV, Andersen RA (1998) Visual self-motion perception during head turns. Nature neuroscience 1: 732-737 Ehrlich SM, Beck DM, Crowell JA, Freeman TC, Banks MS (1998) Depth information and perceived self-motion during simulated gaze rotations. Vision Res 38: 3129-3145 Gibson JJ (1950) The perception of the visual world. Houghton Mifflin, Boston Groen EL, Valenti Clari MSV, Hosman RJAW (2000) Psychophysical thresholds associated with the simulation of linear acceleration. AIAA 4294-4302 Harris LR, Jenkin M, Zikovitz DC (2000) Visual and non-visual cues in the perception of linear self motion. Exp.Brain Res. 135: 12-21 Hlavacka F, Mergner T, Bolha B (1996) Human self-motion perception during translatory vestibular and proprioceptive stimulation. Neurosci Lett 210: 83-86 Jürgens R, Bob T, Becker W (1999) Estimation of self-turning in the dark: comparison between active and passive rotation. Exp.Brain Res. 128: 491-504 Kim NG, Turvey MT (1998) Visually perceiving heading on circular and elliptical paths. J Exp Psychol Hum Percept Perform 24: 1690-1704 Koenderink JJ (1986) Optic Flow. Vision Res 26: 161-180 Lambrey, S., Viaud-Delmon, I., Berthoz, A. (in press) Influence of a sensorimotor conflict on the memorisation of a path travelled in virtual reality. Brain Res special issue on multisensory integration. Lappe M, Bremmer F, van den Berg AV (1999) Perception of self-motion from visual flow [Review]. Trends in Gognitive Sciences 3: 329-336 Li L, Warren WH, Jr. (2000) Perception of heading during rotation: sufficiency of dense motion parallax and reference objects. Vision Res. 40: 3873-3894 Loose R, Ayan T, Probst T (1999) Visual motion direction evoked potentials are direction specifically influenced by concurrent vestibular stimulation. Clinical Neurophysiology 110: 192-199 Mergner T, Becker W (1990) Perception of horizontal self-rotation : multisensory and cognitive aspects. In: Warren R, Wertheim AH (eds) Perception and control of self-motion. Lawrence Erlbaum Ass., Hillsdale, pp 219-263 Mergner T, Schweigart G, Müller M, Hlavacka F, Becker W (2000) Visual contributions to human self-motion perception during horizontal body rotation. Arch Ital Biol 138: 139-166 Mesland, B. S. About horizontal self-motion perception... 1998. PhD thesis, Utrecht University, the Netherlands. Pavard B, Berthoz A (1977) Linear acceleration modifies the perceived velocity of a moving visual scene. Perception 6: 529-540 Probst T, Loose R, King SK, Stott JR, Wist ER, Wright R (1996) Perception of direction of visual motion. II. Influence of linear body acceleration. Behav Brain Res 81: 147-154 Probst T, Loose R, Niedeggen M, Wist ER (1995) Processing of visual motion direction in the fronto-parallel plane in the stationary or moving observer. Behav Brain Res 70: 133-144 Redlick FP, Jenkin M, Harris LR (2001) Humans can use optic flow to estimate distance of travel. Vision Res. 41: 213-219 Royden CS, Crowell JA, Banks MS (1994) Estimating heading during eye movements. Vision Res 34: 3197-3214 Rushton SK, Harris JM, Lloyd MR, Wann JP (1998) Guidance of locomotion on foot uses perceived target location rather than optic flow. Curr Biol 8: 1191-1194 Sibigtroth, M. P. and Banks, M. S. Vestibular Stimulation in Heading Estimation. Presentation at VSS, 2001. von der Heyde, M., Riecke, B. E., Cunningham, D. W., and Bülthoff, H. Visual-vestibular sensor integration follows a Max-Rule: Results from psychophysical experiments in Virtual Reality. Poster at the Tübinger Wahrnehmungskonferenz (TWK) 2001 Wann, JP, Schwapp, DK (2000) Why you should look where you steer. Nature neuroscience 3: 647-648 Wann JP, Swapp D, Rushton SK (2000) Heading perception and the allocation of attention. Vision Res. 40: 2533-2543 Wenzel R, Bartenstein P, Dieterich M, Danek A, Weindl A, Minoshima S, Ziegler S, Schwaiger M, Brandt T (1996) Deactivation of human visual cortex during involuntary ocular oscillations - A PET activation study. Brain 119: 101-110 relation_type: [] relation_uri: [] reportno: ~ rev_number: 12 series: ~ source: ~ status_changed: 2007-09-12 16:42:59 subjects: - behav-neuro-sci - neuro-psy - psy-phys succeeds: ~ suggestions: ~ sword_depositor: ~ sword_slug: ~ thesistype: ~ title: |- Reconstructing passively travelled manoeuvres: Visuo-vestibular interactions. type: preprint userid: 2821 volume: ~