Haptic curvature discrimination at several regions of the hand
Haptic curvature discrimination at several regions of the hand
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DOI：
10.3758/bf03214210
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发表时间：
1997-11-01
期刊：
影响因子：
--
通讯作者：
Koenderink, JJ
中科院分区：
文献类型：
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作者：
Pont, SC;Kappers, AML;Koenderink, JJ
静态触觉歧视的曲率凸，凹，或直20厘米长的带进行了调查，九个位置的手。在一种情况下，用手的掌侧触摸条带，在另一种情况下，用手背侧触摸条带。还研究了带的长度以及接触长度的影响。对于所有的位置，歧视是较差的背比手掌的条件，由于较差的皮肤分辨率的背侧的手（动觉刺激是相同的，在这两种条件）。因此，皮肤刺激是重要的。在这两个实验中，性能似乎主要取决于接触长度。此外，所有不同的位置和接触长度的歧视阈值遵循相同的趋势。我们的结论是，在这些实验中，有效的刺激的歧视弯曲条是总的差异，当地的表面态度，也就是说，在刺激的远端的斜率差异。
Static haptic discrimination of the curvature of convex, concave, or straight 20-cm-long strips was investigated for nine placements on the hand. In one condition, the strips were touched with the palmar side of the hand, and in the other condition, with the dorsal side. The influence of the lengths of the strips, and thus of contact lengths, was also investigated. For all placements, discrimination was poorer in the dorsal than in the palmar condition, owing to poorer cutaneous resolution on the dorsal side of the hand (the kinesthetic stimulation was the same in both conditions). Thus cutaneous stimulation is important. In both experiments, performance appeared to depend primarily on contact length. Moreover, the discrimination thresholds for all different placements and contact lengths followed the same trend. We conclude that in these experiments the effective stimulus for the discrimination of curved strips is the total difference of local surface attitude-that is, the slope difference over the far ends of the stimulus.