Heller M A
Winston-Salem State University, NC 27110.
Perception. 1987;16(3):291-8. doi: 10.1068/p160291.
Five experiments are reported in which subjects matched tangible or visible braille characters against either visual or tangible arrays. In both modalities recognition was impaired when the characters were tilted, but visual performance was superior to that for touch. Touch may be more sensitive than vision to tilt, since very small deviations from the upright decreased recognition accuracy. Orientation influenced pattern recognition with and without prior information about orientation. Tilting patterns slowed down recognition for tactual-visual matching, but only when orientation was studied with repeated measures. The results are consistent with the hypothesis that it is difficult to code braille patterns tactually as global outline shapes.
本文报告了五项实验，实验中受试者将有形或可见的盲文字符与视觉或有形阵列进行匹配。在两种模式下，当字符倾斜时，识别能力都会受损，但视觉表现优于触觉表现。触觉可能比视觉对倾斜更敏感，因为与直立状态的极小偏差都会降低识别准确率。无论有无关于方向的先验信息，方向都会影响图案识别。倾斜图案会减缓触觉-视觉匹配的识别速度，但只有在采用重复测量研究方向时才会如此。这些结果与以下假设一致，即很难将盲文图案作为整体轮廓形状进行触觉编码。
