MANUAL DISCRIMINATION OF COMPLIANCE USING ACTIVE PINCH GRASP - THE ROLES OF FORCE AND WORK CUES
MANUAL DISCRIMINATION OF COMPLIANCE USING ACTIVE PINCH GRASP - THE ROLES OF FORCE AND WORK CUES
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DOI：
10.3758/bf03213075
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发表时间：
1995-05-01
期刊：
影响因子：
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通讯作者：
SRINIVASAN, MA
中科院分区：
文献类型：
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作者：
TAN, HZ;DURLACH, NI;SRINIVASAN, MA
在这些实验中，两个盘子被夹在拇指和食指之间，沿着一条直线挤压在一起。由计算机控制的机电系统产生的抵抗挤压的力被编程为在挤压位移上是恒定的(在力识别实验的情况下)或线性增加(在柔顺识别实验的情况下)。在完成了一系列关于顺从分辨的基本心理物理实验(实验1)后，我们进行了进一步的实验，以考察功和/或终端力线索是否在顺从辨别中起作用。在实验2中，采用漂移-位移范式进行了顺应性和力辨别实验，分别从顺应性和力线索中分离出工作线索(和末端力量线索)。并考察了逐次试验反馈对应对策略的影响。实验三采用完全消除工作线索的顺应性辨别实验，大大减少了终端力线索的使用。我们的结果表明，人们倾向于使用机械性工作和强迫线索来进行遵从性辨别。当作功和终端力量线索与顺从线索分离时，顺从线索相对于力量和长度的分辨能力较差(22%)。当工作线索被完全消除时，可以根据终点力线索来预测性能。对顺从性实验的所有数据的简明描述是，受试者根据终端力来区分顺从性。
In these experiments, two plates were grasped between the thumb and the index finger and squeezed together along a linear track. The force resisting the squeeze, produced by an electromechanical system under computer control, was programmed to be either constant (in the case of the force discrimination experiments) or linearly increasing (in the case of the compliance discrimination experiments) over the squeezing displacement. After completing a set of basic psychophysical experiments on compliance resolution (Experiment 1), we performed further experiments to investigate whether work and/or terminal-force cues played a role in compliance discrimination. In Experiment 2, compliance and force discrimination experiments were conducted with a roving-displacement paradigm to dissociate work cues (and terminal-force cues for the compliance experiments) from compliance and force cues, respectively. The effect of trial-by-trial feedback on response strategy was also investigated. In Experiment 3, compliance discrimination experiments were conducted with work cues totally eliminated and terminal-force cues greatly reduced. Our results suggest that people tend to use mechanical work and force cues for compliance discrimination. When work and terminal-force cues were dissociated from compliance cues, compliance resolution was poor (22%) relative to force and length resolution. When work cues were totally eliminated, performance could be predicted from terminal-force cues. A parsimonious description of all data from the compliance experiments is that subjects discriminated compliance on the basis of terminal force.