Representing spatial location and layout from sparse kinesthetic contacts
Representing spatial location and layout from sparse kinesthetic contacts
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DOI：
10.1037/0096-1523.29.2.310
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发表时间：
2003-04-01
影响因子：
2.1
通讯作者：
Lederman, SJ
中科院分区：
文献类型：
--
作者：
Klatzky, RL;Lederman, SJ
参与者的手指被引导到桌子上的两个位置，持续3秒，然后回到起点。他们通过(a)替换1个或2个手指，(b)转换接触结构，或(c)单独估计距离或角度来报告位置之间的距离和角度。在这些条件下，距离误差增加。在响应前旋转角度参考轴时，角度误差增大。从暴露到测试，姿势的改变会损害我的手指。结果表明，我们使用了一种动觉表征来代替手指，但为了估计新位置的距离和角度，我们计算了一种构型表征。这种表示是在外部参考框架内定向的，并且比比例更准确地保持形状。
Participants' fingers were guided to 2 locations on a table for 3 s, then back to the start. They reported distances and angles between the locations by (a) replacing I or 2 fingers, (b) translating the contacted configuration, or (c) estimating distance or angle alone. Distance error increased across these conditions. Angular error increased when the angular reference axis was rotated before the response. Replacing I finger was impaired by a change in posture from exposure to test. The results suggest a kinesthetic representation is used to replace the fingers, but to estimate distance and angle at new locations, a configural representation is computed. This representation is oriented within an extrinsic reference frame and maintains shape more accurately than scale.