Era Ataru, Yokosawa Kazuhiko
Department of Psychology, Graduate School of Humanities and Sociology, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113- 0033, Japan.
Shinrigaku Kenkyu. 2009 Aug;80(3):232-7. doi: 10.4992/jjpsy.80.232.
We investigated whether visual cues are useful for judging haptic angles. Participants explored three-dimensional angles with a virtual haptic feedback device. For visual cues, we use a location cue, which synchronizes haptic exploration, and a space cue, which specifies the haptic space. In Experiment 1, angles were judged more correctly with both cues, but were overestimated with a location cue only. In Experiment 2, the visual cues emphasized depth, and overestimation with location cues occurred, but space cues had no influence. The results showed that (a) when both cues are presented, haptic angles are judged more correctly. (b) Location cues facilitate only motion information, and not depth information. (c) Haptic angles are apt to be overestimated when there is both haptic and visual information.
我们研究了视觉线索是否有助于判断触觉角度。参与者使用虚拟触觉反馈设备探索三维角度。对于视觉线索，我们使用一种同步触觉探索的位置线索和一种指定触觉空间的空间线索。在实验1中，两种线索下角度的判断都更准确，但仅使用位置线索时会出现高估。在实验2中，视觉线索强调深度，出现了位置线索导致的高估情况，但空间线索没有影响。结果表明：（a）当两种线索都呈现时，触觉角度的判断更准确。（b）位置线索仅有助于运动信息，而非深度信息。（c）当存在触觉和视觉信息时，触觉角度容易被高估。
