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Rotational inertia and multimodal heaviness perception

Psychonomic Bulletin and Review, ISSN: 1069-9384, Vol: 14, Issue: 5, Page: 1001-1006
2007
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Article Description

Perceived heaviness of wielded objects has been shown to be a function of the objects' rotational inertia - the objects' resistance to rotational acceleration. Studies have also demonstrated that if virtual objects rotate faster than the actual wielded object (i.e., a rotational gain is applied to virtual object motion), the wielded object is perceived as systematically lighter. The present research determined whether combining those inertial and visual manipulations would influence heaviness perception in a manner consistent with an inertial model of multimodal heaviness perception. Rotational inertia and optical rotational gain of wielded objects were manipulated to specify inertia multimodally. Both visual and haptic manipulations significantly influenced perceived heaviness. The results suggest that rotational inertia is detected multimodally and that multimodal heaviness perception conforms to an inertial model. Copyright 2007 Psychonomic Society, Inc.

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