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via Experimental Brain Research (Online First™) on 10/27/10
Abstract
The sense of touch is believed to provide a reliable perception of the object's properties; however, our tactile perceptions could be illusory at times. A recently reported tactile illusion shows that a raised form can be perceived as indented when it is surrounded by textured areas. This phenomenon suggests that the form perception can be influenced by the surface textures in its adjacent areas. As perception of texture and that of form have been studied independently of each other, the present study examined whether textures, in addition to the geometric edges, contribute to the tactile form perception. We examined the perception of the flat and raised contact surface (3.0 mm width) with various heights (0.1, 0.2, 0.3 mm), which had either textured or non-textured adjacent areas, under the static, passive and active touch conditions. Our results showed that texture decreased the raised perception of the surface with a small height (0.1 mm) and decreased the flat perception of the physically flat surface under the passive and active touch conditions. We discuss a possible mechanism underlying the effect of the textures on the form perception based on previous neurophysiological findings.
- Content Type Journal Article
- DOI 10.1007/s00221-010-2464-3
- Authors
- Masashi Nakatani, Graduate School of Information Science and Technology, The University of Tokyo, Bunkyo, Tokyo Japan
- Robert D. Howe, Harvard School of Engineering and Applied Sciences, Cambridge, MA USA
- Susumu Tachi, Graduate School of Media Design, Keio University, Kohoku-ku, Yokohama, Japan
- Journal Experimental Brain Research
- Online ISSN 1432-1106
- Print ISSN 0014-4819
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