Bari D S, Aldosky H Y Y, Tronstad C, Kalvøy H, Martinsen Ø G
Faculty of Science, Department of Physics, University of Zakho, Zakho, Iraq.
College of Science, Department of Physics, University of Duhok, Duhok, Iraq.
Skin Res Technol. 2018 Feb;24(1):108-116. doi: 10.1111/srt.12397. Epub 2017 Aug 4.
BACKGROUND/AIM: Presently, electrodermal activity (EDA) is the preferred term for changes in electrical properties of the skin. Change in the skin conductance responses (SCRs) and skin potential responses (SPRs) due to external stimuli have previously been investigated in a number of studies, but very little for skin susceptance responses (SSRs) recorded simultaneously at the same skin site. This study aimed to investigate the association between the three parameters of EDA, skin conductance (SC), skin potential (SP), and skin susceptance (SS) responses generated by different types of psychological stimuli.
SCRs, SPRs, and SSRs were recorded from 20 healthy test subjects simultaneously at the same skin area. EDA responses were induced by five different external stimuli, which were shown in the form of PowerPoint slides on a PC monitor that situated in front of participants.
All stimuli evoked EDA responses, but with significantly different magnitudes, dependent on stimulus type. Both SC and SP waveforms yielded positive responses with respect to the stimuli; however, SS showed negative response and its role was found to be significant at low frequency (20 Hz).
This study illustrated that different discrete stimuli showed different passive and active electrodermal responses at the same skin site. SCRs, SPRs, and SSRs were dependent on the stimulus type, and the highest response was associated with the sound stimulus, which can be attributed to orienting response or startle reflex. In addition, it was found that the SSRs have a significant contribution at 20 Hz. In spite of a high correlation found between average amplitude values of SCRs and SSRs, no significant association was seen between average amplitudes values of SPRs and SSRs, and between SCRs and SPRs.
背景/目的：目前，皮肤电活动（EDA）是皮肤电学特性变化的首选术语。先前已有多项研究对因外部刺激引起的皮肤电导反应（SCR）和皮肤电位反应（SPR）的变化进行了调查，但对于在同一皮肤部位同时记录的皮肤电纳反应（SSR）的研究却很少。本研究旨在探讨不同类型心理刺激所产生的EDA的三个参数，即皮肤电导（SC）、皮肤电位（SP）和皮肤电纳（SS）反应之间的关联。
从20名健康受试对象的同一皮肤区域同时记录SCR、SPR和SSR。通过五种不同的外部刺激诱发EDA反应，这些刺激以PowerPoint幻灯片的形式显示在参与者面前的电脑显示器上。
所有刺激均诱发了EDA反应，但幅度因刺激类型而异，差异显著。SC和SP波形对刺激均产生正向反应；然而，SS显示为负向反应，并且发现在低频（20Hz）时其作用显著。
本研究表明，不同的离散刺激在同一皮肤部位表现出不同的被动和主动皮肤电反应。SCR、SPR和SSR取决于刺激类型，最高反应与声音刺激相关，这可归因于定向反应或惊吓反射。此外，发现SSR在20Hz时有显著贡献。尽管发现SCR和SSR的平均幅度值之间存在高度相关性，但未观察到SPR和SSR的平均幅度值之间以及SCR和SPR之间存在显著关联。
