Abdouni A, Djaghloul M, Thieulin C, Vargiolu R, Pailler-Mattei C, Zahouani H
Laboratoire de Tribologie et Dynamique des Systèmes-LTDS UMR-CNRS 5513, Université de Lyon, ECL-ENISE, 69134 Ecully, France.
Laboratoire de Biophysique, Faculté de Pharmacie-ISPB, Université Lyon 1, 69008 Lyon, France.
R Soc Open Sci. 2017 Aug 9;4(8):170321. doi: 10.1098/rsos.170321. eCollection 2017 Aug.
The human finger plays an extremely important role in tactile perception, but little is known about how age and gender affect its biophysical properties and their role in tactile perception. We combined studies on contact characteristics, mechanical properties and surface topography to understand age and gender effects on the human finger. The values obtained regarding contact characteristics (i.e. adhesive force) were significantly higher for women than for men. As for mechanical properties (i.e. Young's modulus ), a significant and positive correlation with age was observed and found to be higher for women. A positive correlation was observed between age and the arithmetic mean of surface roughness for men. However, an inverse age effect was highlighted for women. The age and gender effects obtained have never been reported previously in the literature. These results open new perspectives for understanding the weakening of tactile perception across ages and how it differs between men and women.
人类手指在触觉感知中起着极其重要的作用，但对于年龄和性别如何影响其生物物理特性以及这些特性在触觉感知中的作用，我们却知之甚少。我们结合了对接触特性、力学性能和表面形貌的研究，以了解年龄和性别对人类手指的影响。在接触特性（即粘附力）方面，女性获得的值显著高于男性。至于力学性能（即杨氏模量），观察到其与年龄呈显著正相关，且女性的该值更高。男性的年龄与表面粗糙度的算术平均值之间呈正相关。然而，女性却呈现出相反的年龄效应。此前文献中从未报道过所获得的年龄和性别效应。这些结果为理解不同年龄段触觉感知的减弱以及男女之间的差异开辟了新的视角。
