ID 58105
FullText URL
Author
Yu, Jiabin Cognitive Neuroscience Laboratory, Graduate School of Natural Science and Technology, Okayama University
Yang, Jiajia Cognitive Neuroscience Laboratory, Graduate School of Interdisciplinary, Science and Engineering in Health Systems, Okayama University
Yu, Yinghua Cognitive Neuroscience Laboratory, Graduate School of Interdisciplinary, Science and Engineering in Health Systems, Okayama University ORCID
Wu, Qiong Cognitive Neuroscience Laboratory, Graduate School of Interdisciplinary, Science and Engineering in Health Systems, Okayama University
Takahashi, Satoshi Cognitive Neuroscience Laboratory, Graduate School of Interdisciplinary, Science and Engineering in Health Systems, Okayama University Kaken ID researchmap
Ejima, Yoshimichi Cognitive Neuroscience Laboratory, Graduate School of Interdisciplinary, Science and Engineering in Health Systems, Okayama University Kaken ID
Wu, Jinglong Cognitive Neuroscience Laboratory, Graduate School of Interdisciplinary, Science and Engineering in Health Systems, Okayama University
Abstract
Human unmyelinated tactile afferents (CT afferents) in hairy skin are thought to be involved in the transmission of affective aspects of touch. How the perception of affective touch differs across human skin has made substantial progress; however, the majority of previous studies have mainly focused on the relationship between stroking velocities and pleasantness ratings. Here, we investigate how stroking hardness affects the perception of affective touch. Affective tactile stimulation was given with four different hardness of brushes a three different forces, which were presented to either palm or forearm. To quantify the physical factors of the stimuli (brush hardness), ten naive, healthy participants assessed brush hardness using a seven-point scale. Based on these ten participants, five more participants were added to rate the hedonic value of brush stroking using a visual analogue scale (VAS). We found that pleasantness ratings over the skin resulted in a preference for light, soft stroking, which was rated as more pleasant when compared to heavy, hard stroking. Our results show that the hairy skin of the forearm is more susceptible to stroking hardness than the glabrous of the palm in terms of the perception of pleasantness. These findings of the current study extend the growing literature related to the effect of stroking characteristics on pleasantness ratings.
Keywords
Neuroscience
Pleasantness ratings
Affective tactile
Physical factors
CT afferents
Stroking hardness
Published Date
2019-08
Publication Title
Heliyon
Volume
volume5
Issue
issue8
Publisher
Elsevier
Start Page
e02141
ISSN
2405-8440
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
Copyright Holders
© 2019 The Authors.
File Version
publisher
PubMed ID
DOI
Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.1016/j.heliyon.2019.e02141
License
https://creativecommons.org/licenses/by-nc-nd/4.0/
Funder Name
Japan Society for the Promotion of Science
助成番号
16K18052
17K18855
18H05009
18K12149
18K15339
18H01411