Comparison of Blind and Sighted Subjects' Volar Tactile Sensation Using Static and Moving Two-Point Discrimination Tests
Comparison of Blind and Sighted Subjects' Volar Tactile Sensation Using Static and Moving Two-Point Discrimination Tests
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使用静态和移动两点辨别测试比较盲人和视力正常受试者的掌侧触觉
DOI：
10.1299/kikaic.72.829
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
N. Sakai
中科院分区：
文献类型：
--
作者：
S. Shimawaki;N. Sakai
采用静态两点辨别试验（s2 PD）和运动两点辨别试验（m2 PD）对盲人和正常人的掌侧触觉进行测试。12名盲人受试者（年龄范围19-72岁，平均36岁; 1名女性;平均盲文阅读经验27年）和10名视力正常的受试者（年龄范围21-24岁，平均22岁）参加了本研究。根据手指关节的位置、周围神经和周围神经的支配区域，将受试者右手掌侧分为29个区。在手掌侧19个区域，盲人的s2 PD阈值明显短于有视力的人。然而，在所有29个区域，盲人受试者和视力正常受试者的m2 PD阈值之间没有差异。此外，盲人受试者的m2 PD阈值仅在两个区域显著短于他们的s2 PD阈值。因此，盲人受试者对于静态和运动刺激的手掌侧具有优越的上级触觉。
The volar tactile sensations of the blind and the sighted subjects were measured using two tests : static two-point discrimination test (s2PD) and moving two-point discrimination test (m2PD). Twelve blind subjects (age range 19-72 years, mean 36 years; one female; mean Braille reading experience 27 years) and ten sighted subjects (age range 21-24 years, mean 22 years) participated in this study. The volar side of the right hand of subjects was divided into 29 areas each, according to the location of finger joints and the innervation regions of peripheral and peripheral nerves. The s2PD thresholds of blind subjects were significantly shorter than that of sighted subjects at 19 areas on the volar side of hand. However, there was no difference between the m2PD thresholds of blind subjects and sighted subjects at all 29 areas. In addition, the m2PD thresholds of blind subjects were significantly shorter than the s2PD thresholds of them at only two areas. So, blind subjects have superior tactile sensation on the volar side of hand for both static and moving stimuli.