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Effect of 3D microstructure of dermal papillae on SED concentration at a mechanoreceptor location

The feeling of touch is an essential human sensation. Four types of mechanoreceptors (i.e., FA-I, SA-I, FA-II, and SA-II) in human skin signalize physical properties, such as shape, size, and texture, of an object that is touched and transmit the signal to the brain. Previous studies attempted to in...

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Autores principales: Pham, Trung Quang, Hoshi, Takayuki, Tanaka, Yoshihiro, Sano, Akihito
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5722322/
https://www.ncbi.nlm.nih.gov/pubmed/29220415
http://dx.doi.org/10.1371/journal.pone.0189293
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author Pham, Trung Quang
Hoshi, Takayuki
Tanaka, Yoshihiro
Sano, Akihito
author_facet Pham, Trung Quang
Hoshi, Takayuki
Tanaka, Yoshihiro
Sano, Akihito
author_sort Pham, Trung Quang
collection PubMed
description The feeling of touch is an essential human sensation. Four types of mechanoreceptors (i.e., FA-I, SA-I, FA-II, and SA-II) in human skin signalize physical properties, such as shape, size, and texture, of an object that is touched and transmit the signal to the brain. Previous studies attempted to investigate the mechanical properties of skin microstructure and their effect on mechanoreceptors by using finite element modeling. However, very few studies have focused on the three-dimensional microstructure of dermal papillae, and this is related to that of FA-I receptors. A gap exists between conventional 2D models of dermal papillae and the natural configuration, which corresponds to a complex and uneven structure with depth. In this study, the three-dimensional microstructure of dermal papillae is modeled, and the differences between two-dimensional and three-dimensional aspects of dermal papillae on the strain energy density at receptor positions are examined. The three-dimensional microstructure has a focalizing effect and a localizing effect. Results also reveal the potential usefulness of these effects for tactile sensor design, and this may improve edge discrimination.
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spelling pubmed-57223222017-12-15 Effect of 3D microstructure of dermal papillae on SED concentration at a mechanoreceptor location Pham, Trung Quang Hoshi, Takayuki Tanaka, Yoshihiro Sano, Akihito PLoS One Research Article The feeling of touch is an essential human sensation. Four types of mechanoreceptors (i.e., FA-I, SA-I, FA-II, and SA-II) in human skin signalize physical properties, such as shape, size, and texture, of an object that is touched and transmit the signal to the brain. Previous studies attempted to investigate the mechanical properties of skin microstructure and their effect on mechanoreceptors by using finite element modeling. However, very few studies have focused on the three-dimensional microstructure of dermal papillae, and this is related to that of FA-I receptors. A gap exists between conventional 2D models of dermal papillae and the natural configuration, which corresponds to a complex and uneven structure with depth. In this study, the three-dimensional microstructure of dermal papillae is modeled, and the differences between two-dimensional and three-dimensional aspects of dermal papillae on the strain energy density at receptor positions are examined. The three-dimensional microstructure has a focalizing effect and a localizing effect. Results also reveal the potential usefulness of these effects for tactile sensor design, and this may improve edge discrimination. Public Library of Science 2017-12-08 /pmc/articles/PMC5722322/ /pubmed/29220415 http://dx.doi.org/10.1371/journal.pone.0189293 Text en © 2017 Pham et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Pham, Trung Quang
Hoshi, Takayuki
Tanaka, Yoshihiro
Sano, Akihito
Effect of 3D microstructure of dermal papillae on SED concentration at a mechanoreceptor location
title Effect of 3D microstructure of dermal papillae on SED concentration at a mechanoreceptor location
title_full Effect of 3D microstructure of dermal papillae on SED concentration at a mechanoreceptor location
title_fullStr Effect of 3D microstructure of dermal papillae on SED concentration at a mechanoreceptor location
title_full_unstemmed Effect of 3D microstructure of dermal papillae on SED concentration at a mechanoreceptor location
title_short Effect of 3D microstructure of dermal papillae on SED concentration at a mechanoreceptor location
title_sort effect of 3d microstructure of dermal papillae on sed concentration at a mechanoreceptor location
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5722322/
https://www.ncbi.nlm.nih.gov/pubmed/29220415
http://dx.doi.org/10.1371/journal.pone.0189293
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