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Integrating multimodal information about surface texture via a probe: relative contributions of haptic and touch-produced sound sources

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4 Author(s)
Lederman, S.J. ; Dept of Psychol., Queen''s Univ., Kingston, Ont., Canada ; Klatzky, R.L. ; Morgan, T. ; Hamilton, C.

We experimentally assessed the relative contributions of tactile and auditory information to multisensory (i.e., bimodal) judgments of surface roughness using a rigid probe. Participants judged the magnitude of surface roughness and their corresponding confidence in three modality conditions: touch-only, audition-only (i.e., touch-produced sounds only) and touch+audition. The results indicated that touch cues were weighted 62% and auditory cues 38% in the bimodal judgments. Participants also proved to be more confident of their judgments in the bimodal condition. Implications for the creation of virtual roughness presented through uni- vs. multimodal interfaces is also addressed

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Haptic Interfaces for Virtual Environment and Teleoperator Systems, 2002. HAPTICS 2002. Proceedings. 10th Symposium on

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