The role of multisensory feedback in haptic surface perception

In performing most everyday tasks, we use information from several different sensory modalities, yet our understanding of how these inputs are integrated is limited. The present study investigated the role of multisensory feedback in the perception of surface roughness, specifically focusing on whet...

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Bibliographic Details
Published in11th Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, 2003. HAPTICS 2003. Proceedings pp. 187 - 194
Main Authors Poling, G.L., Weisenberger, J.M., Kerwin, T.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Auditory system
Feedback
Fingers
Haptic interfaces
Humans
Probes
Rough surfaces
Surface roughness
Surface texture
Virtual environment
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Summary:In performing most everyday tasks, we use information from several different sensory modalities, yet our understanding of how these inputs are integrated is limited. The present study investigated the role of multisensory feedback in the perception of surface roughness, specifically focusing on whether the threshold for distinguishing the roughness of two virtual surfaces was different under visual + haptic conditions, as compared to visual-only or haptic-only conditions. Haptic stimuli were presented via the PHANToM; visual stimuli were presented via computer monitor. The virtual surfaces were sinusoidal gratings that varied in spatial period across trials. Overall, results suggested that threshold was determined by haptic input at low surface amplitudes, and by visual input at high surface amplitudes. At intermediate amplitude values, it appeared that observers were combining information across modalities to produce a percept in the combined condition that was better than that obtained under either single modality condition.
ISBN:9780769518909
0769518907
DOI:10.1109/HAPTIC.2003.1191271