?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Reconstructing+passively+travelled+manoeuvres%3A%0AVisuo-vestibular+interactions.&rft.creator=Bertin%2C+R.J.V.&rft.creator=Berthoz%2C+A.&rft.subject=Behavioral+Neuroscience&rft.subject=Neuropsychology&rft.subject=Psychophysics&rft.description=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%2C+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%2C+we+test+this+hypothesis+using+a+novel+paradigm.+If+indeed+the+final+reconstruction+is+governed+by+the+initial+percept%2C+then+additional%2C+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%3A+the+subjects+were+physically+displaced+or+rotated+at+the+onset+of+the+visual+stimulus.+A+highly+asymmetric+velocity+profile+(high+acceleration%2C+very+low+deceleration)+was+used.+Subjects+were+required+to+guide+an+input+device+(in+the+form+of+a+model+vehicle%3B+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%3B+perception+of+the+ego-motion+rotation+component+by+a+physical+rotation.+This+led+to+a+more+veridical+reconstruction+in+some+conditions%2C+but+it+could+also+lead+to+less+veridical+reconstructions+in+other+conditions.&rft.date=2001&rft.type=Preprint&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F2122%2F3%2FPaper20020110.pdf&rft.identifier=++Bertin%2C+R.J.V.+and+Berthoz%2C+A.++(2001)+Reconstructing+passively+travelled+manoeuvres%3A+Visuo-vestibular+interactions.++%5BPreprint%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F2122%2F