Haptically perceiving the distances reachable with hand-held objects.
Haptically perceiving the distances reachable with hand-held objects.
复制标题
触觉感知手持物体可到达的距离。
DOI：
10.1037/0096-1523.14.3.404
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
M. Turvey
中科院分区：
文献类型：
--
作者：
H. Y. Solomon;M. Turvey
据报道，有九项实验是关于人们感知手持棒所能达到的距离的能力，他们可以通过手腕的运动来挥动这些棒，但看不到。观察到的将棒固定在一端的感知距离和实际到达距离之间的线性关系不受棒的密度、相对于身体的挥舞方向以及挥舞频率的影响。操纵（a）均匀密集的杆上附着的重物的位置和（b）抓握杆的位置表明，感知的到达距离由手杆系统绕旋转轴的主惯性矩（I）控制。人们发现，即使到达距离仅限于延伸超出中间抓握的杆的长度，这种对惯性矩 (I) 的依赖性仍然存在。描述了触觉子系统（手-肌肉-关节-神经）作为 Runeson（1977）意义上的智能感知仪器，其特征在于一个算子方程，其中一个算子对惯性和应变张量进行函数对角化。在主要物理变换上协调惯性张量的不变量可能是触觉子系统的定义属性。这一性质是从吉布森（生态）观点来讨论的，即信息作为变换的不变量以及意图作为自然法的特殊约束。
Nine experiments are reported on the ability of people to perceive the distances reachable with hand-held rods that they could wield by movements about the wrist but not see. An observed linear relation between perceived and actual reaching distances with the rods held at one end was found to be unaffected by the density of the rods, the direction relative to the body in which they were wielded, and the frequency at which they were wielded. Manipulating (a) the position of an attached weight on an otherwise uniformly dense rod and (b) where a rod was grasped revealed that perceived reaching distance was governed by the principal moment(s) of inertia (I) of the hand-rod system about the axis of rotation. This dependency on moment of inertia (I) was found to hold even when the reaching distance was limited to the length of rod extending beyond an intermediate grasp. An account is given of the haptic subsystem (hand-muscles-joints-nerves) as a smart perceptual instrument in the Runeson (1977) sense, characterizable by an operator equation in which one operator functionally diagonalizes the inertia and strain tensors. Attunement to the invariants of the inertia tensor over major physical transformations may be the defining property of the haptic subsystem. This property is discussed from the Gibsonian (ecological) perspectives of information as invariants over transformations and of intentions as extraordinary constraints on natural law.