Tactile-'visual' acuity of the tongue in early blind individuals
Tactile-'visual' acuity of the tongue in early blind individuals
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DOI：
10.1097/wnr.0b013e3282f2a63
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发表时间：
2007-12-03
期刊：
影响因子：
1.7
通讯作者：
Ptito, Maurice
中科院分区：
文献类型：
--
作者：
Chebat, Daniel-Robert;Rainville, Constant;Ptito, Maurice
本研究比较了15名早期失明受试者和24名年龄和性别匹配的正常对照者的舌部“视敏度”。Snellen的翻滚E测试被用来评估使用舌显示单元的“视觉”敏锐度。舌头显示单元是一种感觉替代设备，它将摄像头捕捉的视觉刺激转换为电触觉脉冲，通过电极制成的网格传递到舌头。早期失明（1/206）和正常对照（1/237）参与者之间的阈值没有总体显著差异。然而，我们发现，在两个最高视力类别中，早期失明的比例更大（1/150和1/90）。这些结果扩展了早期的发现，即可以使用舌头测量盲人的视力。此外，我们的数据表明，一个小组的早期失明的参与者是更有效地通过舌头传达视觉信息比控制。
This study compares the 'tactile-visual' acuity of the tongue for 15 early blind participants with that of 24 age-matched and sex-matched sighted controls. Snellen's tumbling E test was used to assess 'visual' acuity using the tongue display unit. The tongue display unit is a sensory substitution device that converts a visual stimulus grabbed by a camera into electro-tactile pulses delivered to the tongue via a grid made out of electrodes. No overall significant difference was found in thresholds between early blind (1/206) and sighted control (1/237) participants. We found, however, larger proportion of early blind in the two highest visual acuity categories (1/150 and 1/90). These results extend earlier findings that it is possible to measure visual acuity in the blind individuals using the tongue. Moreover, our data demonstrate that a subgroup of early blind participants is more efficient than controls in conveying visual information through the tongue.