Print Email Facebook Twitter Haptic perception disambiguates visual perception of 3D shape Title Haptic perception disambiguates visual perception of 3D shape Author Wijntjes, M.W.A. Volcic, R. Pont, S.C. Koenderink, J.J. Kappers, M.L. Faculty Industrial Design Engineering Department Industrial Design Date 2009-02-08 Abstract We studied the influence of haptics on visual perception of three-dimensional shape. Observers were shown pictures of an oblate spheroid in two different orientations. A gauge-figure task was used to measure their perception of the global shape. In the first two sessions only vision was used. The results showed that observers made large errors and interpreted the oblate spheroid as a sphere. They also misinterpreted the rotated oblate spheroid for a prolate spheroid. In two subsequent sessions observers were allowed to touch the stimulus while performing the task. The visual input remained unchanged: the observers were looking at the picture and could not see their hands. The results revealed that observers perceived a shape that was different from the vision-only sessions and closer to the veridical shape. Whereas, in general, vision is subject to ambiguities that arise from interpreting the retinal projection, our study shows that haptic input helps to disambiguate and reinterpret the visual input more veridically. Subject Visual perceptionHaptic perceptionCross-modal3D shape To reference this document use: http://resolver.tudelft.nl/uuid:3a88bcd6-f3e7-4265-89aa-6d7af045d25b DOI https://doi.org/10.1007/s00221-009-1713-9 Publisher Springer ISSN 1432-1106 Source Experimental Brain Research, 193 (4), 2009 Part of collection Institutional Repository Document type journal article Rights (c) 2009 The Authors Files PDF wijntjes_2009.pdf 256.27 KB Close viewer /islandora/object/uuid:3a88bcd6-f3e7-4265-89aa-6d7af045d25b/datastream/OBJ/view