Sensory coupling in tool use

工具使用中的感觉耦合

• 批准号: 252112694
• 负责人: Professor Dr. Herbert Heuer
• 金额: --
• 依托单位: Leibniz-Institut für Arbeitsforschung an der TU Dortmund (IfADo)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/252112694?language=en
• 关键词: Sensory; coupling; tool; use

Sensory information on the position of our hand is typically multimodal, visual and proprioceptive in particular. Sensory integration of the different modalities results in the perception of a single hand in a single position. In tool use, visual and proprioceptive information typically relate no longer to a single object, the hand, but to different objects, the effective part of the tool and the hand, respectively. Movements of the effective part of the tool are related to hand movements by the so-called kinematic transformation. In the most popular experimental paradigm for the study of adaptation to novel kinematic transformations, the direction of the motion of a cursor on a computer monitor is rotated relative to the direction of hand movement. Preliminary studies with a modification of this paradigm revealed sensory coupling of cursor and hand direction, that is, mutual biases of the perceived directions of hand and cursor movements, in spite of different objects in different locations that move in different planes. The purpose of the proposed project is to advance knowledge of this particular type of sensory coupling.A first series of experiments serves to test extensions of widely accepted models of near-optimal sensory integration. These models have been developed for situations in which different sensory modalities refer to a single property of a single object. They shall be generalized to situations, in which the different sensory modalities refer to a property of two different objects, the movements of which are related by a kinematic transformation. Further series of experiments serve to identify factors which determine the strength and the asymmetry of sensory coupling in tool use. The first of these series is designed to compare different kinematic transformations, the second series to assess the effects of learning the kinematic transformation which might differ for different practice regimen. In the third series additional factors are tested that are likely to affect coupling strength. Among these factors are temporal delays between proprioceptive information on hand movements and visual information on cursor motions, and the correlations between the velocity profiles of hand movements and accompanying cursor motions. Finally, as a by-product of several of the planned experiments, estimates of sensory coupling based on explicit psychophysical judgements will be compared with estimates based on a particular kind of indirect measure of the sensed hand position.

关于我们手的位置的感觉信息通常是多模态的，特别是视觉和本体感受。不同模态的感觉整合导致在单个位置中的单个手的感知。在工具使用中，视觉和本体感受信息通常不再与单个物体（手）相关，而是分别与不同的物体（工具的有效部分和手）相关。工具的有效部分的运动通过所谓的运动学变换与手的运动相关。在最流行的实验范式适应新的运动学变换的研究中，光标在计算机显示器上的运动方向相对于手的运动方向旋转。初步的研究与修改这个范例显示感官耦合的光标和手的方向，即，相互偏见的感知方向的手和光标的运动，尽管不同的对象在不同的位置，在不同的平面上移动。该项目的目的是推进这种特殊类型的感觉耦合的知识。第一系列的实验用于测试被广泛接受的接近最佳的感觉整合模型的扩展。这些模型是为不同的感觉模态涉及单个对象的单个属性的情况而开发的。它们应被推广到这样的情况，即不同的感觉模态指的是两个不同物体的性质，它们的运动通过运动学变换而相关。进一步的一系列实验有助于确定决定工具使用中感觉耦合的强度和不对称性的因素。这些系列中的第一个旨在比较不同的运动学变换，第二个系列评估学习运动学变换的效果，这可能会因不同的练习方案而有所不同。在第三个系列中，测试了可能影响耦合强度的其他因素。在这些因素中，手运动的本体感受信息和光标运动的视觉信息之间的时间延迟，以及手运动的速度曲线和伴随的光标运动之间的相关性。最后，作为几个计划中的实验的副产品，基于明确的心理物理判断的感觉耦合的估计将与基于一种特定的间接测量的感觉手的位置的估计进行比较。