TENSORIAL BASIS TO THE CONSTANCY OF PERCEIVED OBJECT EXTENT OVER VARIATIONS OF DYNAMIC TOUCH
TENSORIAL BASIS TO THE CONSTANCY OF PERCEIVED OBJECT EXTENT OVER VARIATIONS OF DYNAMIC TOUCH
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DOI：
10.3758/bf03206936
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发表时间：
1993-07-01
期刊：
影响因子：
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通讯作者：
TURVEY, MT
中科院分区：
文献类型：
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作者：
PAGANO, CC;FITZPATRICK, P;TURVEY, MT
受试者使用闭塞棒，有或没有附着质量，并报告其远端头端可达到的距离。实验1-3比较了手腕、手肘和肩部的挥舞。实验4和5比较了自由挥舞，使用整个手臂，挥舞只有手腕。这两个比较，分别是空间和时间的变化，在杆的转动惯量。感知程度被认为是恒定的，在这两个比较。这种恒定性与惯性张量I（ij）有关，惯性张量I（ij）定义在一个点上，该点在挥舞过程中与物体保持固定距离，这是施加在身体组织上的机械能的空间和时间相关模式的不变量。讨论集中在相互作用和感知能力的多节段的肢体，在动态触摸的神经生物学的张力关系，并通过不变量理解感知恒定性的策略。
Subjects wielded occluded rods, with or without attached masses, and reported the distances reachable with their distal tips. Experiments 1-3 compared wielding about the wrist, the elbow, and the shoulder. Experiments 4 and 5 compared free wielding, using the whole arm, with wielding only about the wrist. The two comparisons, respectively, were of spatial and temporal variations in the rod's rotational inertia. Perceived extent was found to be constant in both comparisons. This constancy was tied to the inertia tensor I(ij) defined about a point that remains a fixed distance from the object during wielding-an invariant of the spatially and temporally dependent patterning of mechanical energy impressed upon the tissues of the body. Discussion focused on the reciprocal action and perception capabilities of multisegmented limbs, the tensorial relations in the neurobiology of dynamic touch, and the strategy of understanding perceptual constancy through invariants.