The Sampling Position Within, Not the Undulating Geometry of, Fingertip Skin Microstructure May Amplify the Sensation of Edges
The Sampling Position Within, Not the Undulating Geometry of, Fingertip Skin Microstructure May Amplify the Sensation of Edges
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指尖皮肤微观结构内的采样位置，而不是其起伏的几何形状，可能会放大边缘的感觉
DOI：
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
G. J. Gerling
中科院分区：
文献类型：
--
作者：
G. J. Gerling
皮肤在将其表面处施加的压痕调节成应力/应变分布中起作用，所述应力/应变分布是机械感受器转换成神经信号的基础。固体力学技术可能有助于解释皮肤微结构，特别是中间脊，如何影响SA-1机械感受器的敏感性，边缘和曲率刺激。本研究分离了中间脊微结构的两个方面，即相对于表皮-真皮a）材料边界和B）起伏界面几何形状的应力/应变采样位置。本研究的目的是确定每个放大采样应力/应变的相对重要性。以下有限元分析发现，起伏的界面几何形状不提供放大优势。相反，放大应力/应变的必要因素是将采样点定位在材料边界上方的较硬表皮材料中。这些结果可能有助于解释SA-I受体的定位，并为未来人造机电触觉传感器的设计提供信息。
The skin plays a role in conditioning imposed indentation at its surface into distributions of stress/strain that underlying mechanoreceptors convert into neural signals. Solid mechanics techniques may help explain how skin microstructure, in particular the intermediate ridges, influence the SA-I mechanoreceptors’ sensitivity to edge and curvature stimuli. This investigation isolates two facets of intermediate ridge microstructure, the stress/strain sampling position relative to the epidermal-dermal a) material boundary and b) undulating interface geometry. The objective of this study is to determine the relative importance of each for amplifying sampled stress/strain. The following finite element analysis finds that undulating interface geometry provides no amplification advantage. Rather, the imperative factor for amplifying stress/strain is the positioning of the sampling points in the stiffer, epidermal material just above the material boundary. These results may help explain the SA-I receptors’ positioning and inform the future design of man-made, electro-mechanical tactile sensors.
DOI：
10.1115/1.2795945
发表时间：
1996-02-01
影响因子：
1.7
作者：
Srinivasan, MA;Dandekar, K
通讯作者：
Dandekar, K
DOI：
10.1115/1.1613673
发表时间：
2003-10-01
影响因子：
1.7
作者：
Dandekar, K;Raju, BI;Srinivasan, MA
通讯作者：
Srinivasan, MA