A novel device for delivering two-site vibrotactile stimuli to the skin
A novel device for delivering two-site vibrotactile stimuli to the skin
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DOI：
10.1016/j.jneumeth.2005.05.001
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发表时间：
2005-09-30
影响因子：
3
通讯作者：
Tommerdahl, M
中科院分区：
文献类型：
--
作者：
Tannan, V;Dennis, R;Tommerdahl, M
目前对皮肤施加两点振动刺激的方法通常涉及使用两个单独的振动触觉刺激器，这可能导致难以定位刺激并确保刺激以相同的幅度和频率完美地同相传递。这份报告描述了两点刺激器(TPS)，它是为了在逐个试验的基础上在刺激点之间的可变距离将两点刺激传递到皮肤而开发的。该装置安装在振动触觉刺激器上，将其从标准的单探头尖端修改为两个探头尖端。两个探头尖端中的每一个都可以独立地定位以设置尖端到尖端的间距。TPS的两个点都由单一的振动触觉刺激器驱动，两个部位之间的距离可以在逐个试验的基础上改变。为了测试该器件，提出了一种改进的贝克西跟踪方法，并用于在不同幅值和频率的刺激条件下进行两点阈值测试。收集的数据与之前发表的报告一致，这表明该设备的一个可能用途是提供一种改进空间-触觉敏锐度测量的手段。(C)2005 Elsevier B.V.保留所有权利。
Current methods for applying two-site vibration stimuli to the skin typically involve the use of two separate vibrotactile stimulators, which can lead to difficulty with positioning of stimuli and in ensuring that stimuli are delivered perfectly in phase at the same amplitude and frequency. This report describes the Two-Point Stimulator (TPS) that was developed in order to deliver two-point stimuli to the skin at variable distances between the sites of stimulation on a trial-by-trial basis. The apparatus attaches to a vibrotactile stimulator, modifying it from the standard single probe tip to two probe tips. Each of the two probe tips can be independently positioned to set the tip-to-tip spacing. Both points of the TPS are driven by the single vibrotactile stimulator and distances between the two sites can be varied on a trial-by-trial basis. To test the device, a modified Bekesy tracking method was developed and used for two-point limen testing under stimulus conditions of varying amplitude and frequency. Data collected were consistent with previously published reports, suggesting that one possible use of the device would be to provide a means for improved measures of spatio-tactile acuity. (c) 2005 Elsevier B.V. All rights reserved.