VR装置を利用した到達把持運動における物体の各属性処理の独立性  [in Japanese] Information Processing of Object Intrinsic/Extrinsic Properties on Prehension Movements in a Virtual Reality System : Evidence for Independent Visuomotor Channels  [in Japanese]

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Author(s)

    • 福井 隆雄 FUKUI Takao
    • 京都大学大学院情報学研究科博士後期課程 Department of Intelligence Science and Technology, Graduate School of Informatics, Kyoto University
    • 石井 昭紀 ISHII Akinori
    • 京都大学大学院情報学研究科 Department of Intelligence Science and Technology, Graduate School of Informatics, Kyoto University
    • 乾 敏郎 INUI Toshio
    • 京都大学大学院情報学研究科 Department of Intelligence Science and Technology, Graduate School of Informatics, Kyoto University

Abstract

Jeannerod (1981) proposed that prehension movements consist of two components; the transport component and the manipulation component. These two components are independent each other. The transport component is based on extrinsic properties of the object (e.g. location), whereas the manipulation component is based on intrinsic properties (e.g. size). While many studies about the effects of location and size of the object on prehension were investigated, the influence of object orientation has been examined in a few papers. To investigate how orientation of the object is processed, we made two experiments with virtual reality (VR) technique. In experiment 1, we studied the properties of prehension movements to a computer-generated target (a virtual cylinder), comparing it with prehension movements to a real object (a wooden cylinder) and pantomimed movements (subjects were required to pretend to grasp the same cylinder). Results showed that the kinematic pattern of prehension movements to a 3-dimensional virtual image is similar to that of actual performance using a real object. Therefore, VR technique is valid for investigating the kinematics of prehension movements, although there is no tactile feedback when grasping. In experiment 2, we used a visual perturbation paradigm by which the location, size (width) and orientation (in this case, inclination) of the object to be reached and grasped could be changed 150ms after the beginning of movement. Participants could smoothly modify their arm movement (transport), distance of fingers (manipulation) and rotation of wrist to visual perturbation, but the latencies of the modifications for these three movements differed from each other. This result suggests that the orientation of a target is processed in a different system from that for the size or location on prehension movements. That is, hand transport, wrist rotation, and grasping could each be processed by independent visuomotor channels.

Journal

  • Cognitive Studies

    Cognitive Studies 11(2), 109-123, 2004-06-01

    Japanese Cognitive Science Society

References:  24

Cited by:  1

Codes

  • NII Article ID (NAID)
    10013116076
  • NII NACSIS-CAT ID (NCID)
    AN1047304X
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    13417924
  • NDL Article ID
    7024036
  • NDL Source Classification
    ZS2(科学技術--心理学)
  • NDL Call No.
    Z19-B640
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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