Physical correlates of human-like softness elicit high tactile pleasantness

Abstract Touching an object can elicit affective sensations. Because these sensations are critical for social interaction, tactile preferences may be adapted to the characteristics of the human body. We have previously shown that compliance, a physical correlate of softness, increased the tactile pl...

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Autores principales:	Ryo Kitada, Megan Ng, Zheng Yee Tan, Xue Er Lee, Takanori Kochiyama
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f1c84a549cdf44068625e683cd73387f
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spelling	oai:doaj.org-article:f1c84a549cdf44068625e683cd73387f2021-12-02T18:50:47ZPhysical correlates of human-like softness elicit high tactile pleasantness10.1038/s41598-021-96044-w2045-2322https://doaj.org/article/f1c84a549cdf44068625e683cd73387f2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96044-whttps://doaj.org/toc/2045-2322Abstract Touching an object can elicit affective sensations. Because these sensations are critical for social interaction, tactile preferences may be adapted to the characteristics of the human body. We have previously shown that compliance, a physical correlate of softness, increased the tactile pleasantness of a deformable surface. However, the extent to which object compliance similar to the human body elicits tactile pleasantness remains unknown. We addressed this question by using a wide range of compliances and by measuring the distribution of compliance of human body parts. The participants numerically estimated the perceived pleasantness or softness while pushing tactile stimuli with their right index fingers. The perceived softness monotonically increased with increasing compliance and then leveled off around the end of the stimulus range. By contrast, pleasantness showed an inverse U pattern as a function of compliance, reaching the maximum between 5 and 7 mm/N. This range of compliance was within that for both hand and arm. These results indicate that objects with similar compliance levels as those of human body parts yield the highest pleasantness when pushing them.Ryo KitadaMegan NgZheng Yee TanXue Er LeeTakanori KochiyamaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ryo Kitada Megan Ng Zheng Yee Tan Xue Er Lee Takanori Kochiyama Physical correlates of human-like softness elicit high tactile pleasantness
description	Abstract Touching an object can elicit affective sensations. Because these sensations are critical for social interaction, tactile preferences may be adapted to the characteristics of the human body. We have previously shown that compliance, a physical correlate of softness, increased the tactile pleasantness of a deformable surface. However, the extent to which object compliance similar to the human body elicits tactile pleasantness remains unknown. We addressed this question by using a wide range of compliances and by measuring the distribution of compliance of human body parts. The participants numerically estimated the perceived pleasantness or softness while pushing tactile stimuli with their right index fingers. The perceived softness monotonically increased with increasing compliance and then leveled off around the end of the stimulus range. By contrast, pleasantness showed an inverse U pattern as a function of compliance, reaching the maximum between 5 and 7 mm/N. This range of compliance was within that for both hand and arm. These results indicate that objects with similar compliance levels as those of human body parts yield the highest pleasantness when pushing them.
format	article
author	Ryo Kitada Megan Ng Zheng Yee Tan Xue Er Lee Takanori Kochiyama
author_facet	Ryo Kitada Megan Ng Zheng Yee Tan Xue Er Lee Takanori Kochiyama
author_sort	Ryo Kitada
title	Physical correlates of human-like softness elicit high tactile pleasantness
title_short	Physical correlates of human-like softness elicit high tactile pleasantness
title_full	Physical correlates of human-like softness elicit high tactile pleasantness
title_fullStr	Physical correlates of human-like softness elicit high tactile pleasantness
title_full_unstemmed	Physical correlates of human-like softness elicit high tactile pleasantness
title_sort	physical correlates of human-like softness elicit high tactile pleasantness
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f1c84a549cdf44068625e683cd73387f
work_keys_str_mv	AT ryokitada physicalcorrelatesofhumanlikesoftnesselicithightactilepleasantness AT meganng physicalcorrelatesofhumanlikesoftnesselicithightactilepleasantness AT zhengyeetan physicalcorrelatesofhumanlikesoftnesselicithightactilepleasantness AT xueerlee physicalcorrelatesofhumanlikesoftnesselicithightactilepleasantness AT takanorikochiyama physicalcorrelatesofhumanlikesoftnesselicithightactilepleasantness
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Physical correlates of human-like softness elicit high tactile pleasantness

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