Tactile picture recognition: errors are in shape acquistion or object matching?
Tactile picture recognition: errors are in shape acquistion or object matching?
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触觉图片识别：错误在于形状获取还是物体匹配？
DOI：
10.1163/187847511x584443
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发表时间：
2012
影响因子：
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通讯作者：
Sinha,Pawan
中科院分区：
文献类型：
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作者：
Kalia,AmyA;Sinha,Pawan
许多研究表明，视力正常和失明的人很难识别普通物体的触觉图像。然而，目前还不清楚是什么原因使得识别触觉图像如此困难。一种可能是观察者在感受图像时很难获得图像的整体形状。或者，观察者可能对形状有准确的理解，但无法将其与特定的对象表示联系起来。因此，我们进行了两个实验，以确定触觉图像识别哪里出错。在实验1中，我们发现蒙眼的视觉观察者对触觉图像的识别与影响形状获取的图像特征（对称性和复杂性）相关。在实验2中，我们要求绘画专家在感受图像后画出他们所感知到的东西。我们发现，当专家们不能识别触觉图片时，他们会画出三种类型的图：(1)看起来不像物体的图（不连贯），(2)看起来不像物体的图（连贯但不准确），(3)看起来像正确物体的图（连贯但不准确）。大多数错误似乎是由于对图像整体形状的不准确感知造成的（错误类型1和2）。我们的研究结果表明，简单的物体触觉图像的识别在很大程度上受到低级触觉形状加工的抑制，而不是高级物体识别机制的抑制。©Koninklijke Brill NV，莱顿，2011
Numerous studies have demonstrated that sighted and blind individuals find it difficult to recognize tactile pictures of common objects. However, it is still not clear what makes recognition of tactile pictures so difficult. One possibility is that observers have difficulty acquiring the global shape of the image when feeling it. Alternatively, observers may have an accurate understanding of the shape but are unable to link it to a particular object representation. We, therefore, conducted two experiments to determine where tactile picture recognition goes awry. In Experiment 1, we found that recognition of tactile pictures by blindfolded sighted observers correlated with image characteristics that affect shape acquisition (symmetry and complexity). In Experiment 2, we asked drawing experts to draw what they perceived after feeling the images. We found that the experts produced three types of drawings when they could not recognize the tactile pictures:(1) drawings that did not look like objects (incoherent),(2) drawings that looked like incorrect objects (coherent but inaccurate) and (3) drawings that looked like the correct objects (coherent and accurate). The majority of errors seemed to result from inaccurate perception of the global shape of the image (error types 1 and 2). Our results suggest that recognition of simplistic tactile pictures of objects is largely inhibited by low-level tactile shape processing rather than high-level object recognition mechanisms.© Koninklijke Brill NV, Leiden, 2011