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官信息通常是多模式，视觉和本体感受的。不同模态的感觉整合导致在单个位置的一只手的感知。在工具使用中，视觉和本体感受信息通常不再与单个对象，手，而是与不同对象，分别是工具和手的有效部分。该工具有效部分的运动与所谓的运动学转换有关手动运动。在最流行的实验范式中，用于研究对新型运动学转化的适应，光标在计算机监视器上的运动方向相对于手动运动的方向而旋转。通过对这种范式进行修改的初步研究表明，光标和手方向的感觉耦合，即，尽管在不同平面运动的不同位置中有不同的物体，但手动和光标运动的感知方向的相互偏见。拟议项目的目的是促进对这种特定类型的感觉耦合的了解。第一系列实验可用于测试广泛接受的近距离感觉整合模型的扩展。这些模型是针对不同感官方式指的是单个对象的单个属性的情况。它们应概括为情况，在这种情况下，不同的感觉方式是指两个不同对象的属性，其运动与运动学转换有关。进一步的实验可以识别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转换，第二个系列是评估学习运动学转化的效果，这可能在不同的实践方案中有所不同。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，在手机上的本体感受信息与光标运动的视觉信息之间的时间延迟，以及手动移动的速度曲线与随附的光标运动之间的相关性。最后，作为几个计划实验的副产品，将将基于显式心理物理判断的感觉耦合的估计与基于特定类型的间接量度的估计值进行比较。