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A study of shape discrimination for tactile guide maps

机译：触觉引导图形状识别的研究

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In a haptic shape task, the human ability to discriminate objects on basis of their shape, as defined by active exploratory movements of the hand, is dependent on receptors located in the skin and deep structures. The shape of a 2-d object is a function of its geometric properties, including the pattern of the surfaces that form the object, their density, their size, and their spatial features. It is now widely known that haptic shape task shares neural activity in visual cortical areas, but we have little information about the factors for haptic shape perception. We investigated to what factors of pattern play an important role in a haptic shape discrimination task. Haptic shape can be gained through a small braille device. There are 10 baselines in the experiment, and 6 kinds of other patterns based on each baseline were made. Healthy right-handed subjects performed a delayed-match-to sample task discriminating between pairs of two-dimensional patterns. From the different characteristics of difficulty in the pattern task, we concluded that different difficulty in discrimination task are underling haptic shape patterns with different densities and sizes.
机译：在触觉形状任务中，人类根据对象的形状（由手的主动探索运动定义）区分对象的能力取决于位于皮肤和深层结构中的受体。二维物体的形状是其几何特性的函数，包括形成物体的表面的图案，密度，大小和空间特征。众所周知，触觉形状任务在视觉皮层区域共享神经活动，但是我们对触觉形状感知因素的了解很少。我们调查了模式的哪些因素在触觉形状识别任务中起着重要的作用。可以通过小型盲文设备获得触觉形状。实验中有10个基准，并根据每个基准制作了6种其他模式。健康的右撇子受试者执行了延迟匹配采样任务，以区分成对的二维模式。从模式任务难度的不同特征，我们得出结论，区分任务的不同难度是具有不同密度和大小的触觉形状模式的基础。

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