Analysis on Geometry of Human Epidermal Ridges
Analysis on Geometry of Human Epidermal Ridges
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人体表皮嵴的几何形状分析
DOI：
10.1299/kikaic.71.245
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
H. Sato
中科院分区：
文献类型：
--
作者：
T. Maeno;D. Yamada;H. Sato
人的表皮脊的目的据说是避免滑动并增加触觉感知的灵敏度。在本研究中，每个表皮脊的详细几何形状的意义进行了研究。首先，使用压印材料测量表皮脊的横截面几何形状。结果表明，表皮嵴的几何形状介于圆弧和梯形之间。在此基础上，对指形截面模型与平板的接触进行了有限元分析。发现人表皮嵴的法向接触力分布比圆弧和梯形的法向接触力分布均匀得多。还发现，当施加切向牵引时，发生表皮嵴的快速整体滑动。最后进行了特征值分析。发现表皮嵴的本征频率与FA Ⅰ机械感受器的敏感频率一致。
Purpose of epidermal ridges of humans have been said to avoid slippage and to increase sensitivity of tactile perception. In the present study, meaning of detailed geometry of each epidermal ridge is investigated. First, cross-sectional geometry of epidermal ridges are measured using imprint material. It is found that the geometry of epidermal ridges are between that of arc and trapezoid. Then, finite element contact analyses between finger section model and a flat plate are conducted. It is found that normal contact forse distribution of human epidermal ridge is much uniform compared with those for arc and trapezoid. It is also found that rapid entire slippage of an epidermal ridge occurs when tangential traction is applied. Finally, eigen value analysis is conducted. It is found that eigen frequency of the epidermal ridges agrees with FA I mechanoreceptor's sensitive frequency.