Stroking hardness changes the perception of affective touch pleasantness across different skin sites

Jiabin Yu, Jiajia Yang, Yinghua Yu, Q. Wu, Satoshi Takahashi, Yoshimichi Ejima, Jinglong Wu

Research output: Contribution to journalArticle

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 at three different forces, which were presented to either palm or forearm. To quantify the physical factors of the stimuli (brush hardness), ten naïve, 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.

Original languageEnglish
Article numbere02141
JournalHeliyon
Volume5
Issue number8
DOIs
Publication statusPublished - Aug 1 2019

Fingerprint

Touch Perception
Hardness
Touch
Skin
Forearm
Pleasure
Visual Analog Scale
Healthy Volunteers
Light

Keywords

  • Affective tactile
  • CT afferents
  • Neuroscience
  • Physical factors
  • Pleasantness ratings
  • Stroking hardness

ASJC Scopus subject areas

  • General

Cite this

Stroking hardness changes the perception of affective touch pleasantness across different skin sites. / Yu, Jiabin; Yang, Jiajia; Yu, Yinghua; Wu, Q.; Takahashi, Satoshi; Ejima, Yoshimichi; Wu, Jinglong.

In: Heliyon, Vol. 5, No. 8, e02141, 01.08.2019.

Research output: Contribution to journalArticle

@article{f9c00a91656d4182878c5d3a252a9fff,
title = "Stroking hardness changes the perception of affective touch pleasantness across different skin sites",
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 at three different forces, which were presented to either palm or forearm. To quantify the physical factors of the stimuli (brush hardness), ten na{\"i}ve, 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 = "Affective tactile, CT afferents, Neuroscience, Physical factors, Pleasantness ratings, Stroking hardness",
author = "Jiabin Yu and Jiajia Yang and Yinghua Yu and Q. Wu and Satoshi Takahashi and Yoshimichi Ejima and Jinglong Wu",
year = "2019",
month = "8",
day = "1",
doi = "10.1016/j.heliyon.2019.e02141",
language = "English",
volume = "5",
journal = "Heliyon",
issn = "2405-8440",
publisher = "Elsevier BV",
number = "8",

}

TY - JOUR

T1 - Stroking hardness changes the perception of affective touch pleasantness across different skin sites

AU - Yu, Jiabin

AU - Yang, Jiajia

AU - Yu, Yinghua

AU - Wu, Q.

AU - Takahashi, Satoshi

AU - Ejima, Yoshimichi

AU - Wu, Jinglong

PY - 2019/8/1

Y1 - 2019/8/1

N2 - 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 at three different forces, which were presented to either palm or forearm. To quantify the physical factors of the stimuli (brush hardness), ten naïve, 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.

AB - 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 at three different forces, which were presented to either palm or forearm. To quantify the physical factors of the stimuli (brush hardness), ten naïve, 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.

KW - Affective tactile

KW - CT afferents

KW - Neuroscience

KW - Physical factors

KW - Pleasantness ratings

KW - Stroking hardness

UR - http://www.scopus.com/inward/record.url?scp=85070395704&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85070395704&partnerID=8YFLogxK

U2 - 10.1016/j.heliyon.2019.e02141

DO - 10.1016/j.heliyon.2019.e02141

M3 - Article

AN - SCOPUS:85070395704

VL - 5

JO - Heliyon

JF - Heliyon

SN - 2405-8440

IS - 8

M1 - e02141

ER -