Individual Variability of Pleasantness Ratings to Stroking Touch Over Different Velocities
Individual Variability of Pleasantness Ratings to Stroking Touch Over Different Velocities
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DOI：
10.1016/j.neuroscience.2020.03.030
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发表时间：
2021-05-18
期刊：
影响因子：
3.3
通讯作者：
Ackerley, Rochelle
中科院分区：
文献类型：
--
作者：
Croy, Ilona;Bierling, Antonie;Ackerley, Rochelle
研究已经调查了在一定范围的划动速度上的触觉愉悦感的感知。平均而言，在慢（例如0.3cm/s）和快（例如30 cm/s）的划动速度下，愉悦度较低，但在1和10 cm/s之间的速度下被评为最高。在一个组的水平上，这导致了一个倒U形的愉快评级曲线，这是由一个负二次方程统计描述。我们重新分析了五项早期研究的数据，以研究在群体水平上的倒U形愉悦曲线是否也存在于个体水平上，这是使用触觉愉悦感知作为诊断标志的先决条件。我们汇总了五项研究的数据，共有127名参与者。每项研究都包括以不同速度（0.3、1、3、10、30厘米/秒）抚摸前臂背侧的“标准条件”，参与者对舒适度进行评分。在这些研究中，除划动速度外的其他因素也各不相同。在整个组的水平上，在每项研究中，愉快的评级产生了显着的负二次愉快曲线的抚摸速度。在个体参与者中，评分差异很大，只有42%的参与者显示出显著的负二次曲线。在其他实验条件下，倒U型曲线的陡峭度仅适度相关，表明实验环境会影响愉快度。我们的发现对未来的工作有重要的意义，触觉愉悦曲线的差异不应该被用来预测或诊断个体水平的问题。(c)2020年IBRO。由爱思唯尔有限公司出版。保留所有权利。
studies have investigated the perception of tactile pleasantness over a range of stroking velocities. On average, pleasantness is low at slow (e.g. 0.3 cm/s) and fast (e.g. 30 cm/s) stroking velocities, but is rated highest at velocities between 1 and 10 cm/s. On a group level, this results in an inverted-U shape pleasantness ratings curve, which is described statistically by a negative quadratic equation. We reanalyzed the data from five earlier studies to investigate whether the inverted-U shape pleasantness curve at the group level is also present at the level of the individual,-a precondition for using tactile pleasantness perception as a diagnostic marker. We pooled the data from five studies with a total of 127 participants. Each study included a 'standard condition' of stroking on the dorsal forearm over different velocities (0.3, 1, 3, 10, 30 cm/s) and participants rated the pleasantness. Factors other than stroking velocity were also varied in these studies. On the whole-group level and in each study, pleasantness ratings produced a significant negative quadratic pleasantness curve over the stroking velocities. In individual participants, ratings varied greatly and only 42% of the participants showed a significant negative quadratic curve. The steepness of the inverted-U correlated only moderately across other experimental conditions, showing that the experimental circumstances can influence pleasantness ratings. Our findings have important implications for future work, where differences in the tactile pleasantness curve should not be used to predict or diagnose issues at an individual level.This article is part of a Special Issue entitled: The Neurobiology of Social and Affective Touch. (c) 2020 IBRO. Published by Elsevier Ltd. All rights reserved.