How perceived object dimension influences prehension
How perceived object dimension influences prehension
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DOI：
10.1097/00001756-199602290-00034
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发表时间：
1996-02-29
期刊：
影响因子：
1.7
通讯作者：
Bennett, KMB
中科院分区：
文献类型：
--
作者：
Castiello, U;Bonfiglioli, C;Bennett, KMB
一项运动学研究评估了一个物体的感知尺寸对涉及该物体的移动模式的影响。如果一个苹果被认为是二维的，受试者使用食指和拇指之间的大精度的抓地力。如果苹果被认为是三维的，则使用涉及所有手指的整个手的伸展。运动开始时从感知的二维到三维的视觉扰动导致从2D精确抓握模式到3D全手抓握模式的过渡。这些结果表明，视觉机制解释一个对象的尺寸直接影响电机的选择途径，并不一定访问一个三维的中枢神经系统表示的对象。
A kinematic study assessed the effects of the perceived dimensions of an object upon the patterning of a prehension movement involving that object. If an apple was perceived as two-dimensional, subjects utilized a large precision grip between the index finger and thumb. If the apple was perceived as three-dimensional, whole hand prehension involving all the digits was utilized. A visual perturbation from perceived two-dimensional to three-dimensional at movement onset resulted in a transition from the 2D precision grip pattern to the 3D whole hand prehension. These results suggest that visual mechanisms for interpreting the dimensions of an object directly influence motor selection pathways, and do not necessarily access a three-dimensional central nervous system representation of the object.