Carello C, Santana M V, Burton G
Center for the Ecological Study of Perception and Action University of Connecticut, Storrs 06269-1020, USA.
Percept Psychophys. 1996 Nov;58(8):1177-90. doi: 10.3758/bf03207551.
Perceiving the length of a rod by dynamic touch is tied to the inertia tensor Iij, a quantification of its resistance to rotational acceleration. Perception of the portion extending in front of the grasp has previously been ascribed to decomposing one component of Iij by attention. The tensorial nature of dynamic touch suggests that this ability must be anchored wholly in the tensor. Three experiments show that perceived partial length is a function of two components of the tensor, one tied primarily to magnitude and the other tied primarily to direction, whereas perceived whole length is a function of a magnitude component alone. Dynamic touch is characterized in terms of a haptic perceptual instrument that softly assembles to exploit Iij differently depending on the intention, producing 1:1 maps that are appropriately scaled for each intention.
通过动态触觉感知杆的长度与惯性张量Iij相关，Iij是对杆抵抗旋转加速度的一种量化。此前，对在抓握前方延伸部分的感知被归因于通过注意力分解Iij的一个分量。动态触觉的张量性质表明，这种能力必须完全基于张量。三个实验表明，感知到的部分长度是张量两个分量的函数，一个主要与大小相关，另一个主要与方向相关，而感知到的整体长度仅是大小分量的函数。动态触觉的特点是一种触觉感知工具，它会根据意图进行灵活组合，以不同方式利用Iij，产生针对每个意图进行适当缩放的1:1映射。
