Interaction of Perceived Frequency and Intensity in Fingertip Electrotactile Stimulation: Dissimilarity Ratings and Multidimensional Scaling.
Interaction of Perceived Frequency and Intensity in Fingertip Electrotactile Stimulation: Dissimilarity Ratings and Multidimensional Scaling.
复制标题
DOI：
10.1109/tnsre.2017.2702628
复制
发表时间：
2017-11
期刊：
影响因子：
--
通讯作者：
Haase SJ
中科院分区：
文献类型：
--
作者：
Kaczmarek KA;Tyler ME;Okpara UO;Haase SJ
由触摸的电刺激引起的感觉是多维的，响应于刺激电流或波形定时的变化而在感知强度和质量上变化。这项研究操纵电流和频率，而志愿者参与者估计所有不相同的16对刺激条件的不同之处。多维尺度分析表明，具有两个感知维度的模型足以代表电触觉（皮肤电）的感觉。这两个维度被确定为感知频率和强度，并且与两个刺激变量频率和电流强烈相关，尽管不是1：1对应。频率差的感知随刺激强度单调增加，这与其他人类感觉系统（如听觉和视觉）一致。我们的研究结果与以前报道的研究使用不同的方法和皮肤位点是一致的。不同方法和实验室的一致性表明了相似的潜在感知机制。
Sensations elicited by electrical stimulation of touch are multidimensional, varying in perceived intensity and quality in response to changes in stimulus current or waveform timing. This study manipulated both current and frequency while volunteer participants estimated the dissimilarity of all non-identical pairs of 16 stimulus conditions. Multidimensional scaling analysis revealed that a model having two perceptual dimensions was adequate in representing the electrotactile (electrocutaneous) sensations. The two dimensions were identified as perceptual frequency and intensity, and were strongly correlated with the two stimulus variables, frequency and current, although not in a 1:1 correspondence. Perception of frequency differences increased monotonically with stimulus intensity, which is consistent with other human sensory systems such as hearing and vision. Our results are consistent with previously-reported research using different methodology and cutaneous locus. Congruence across different methods and laboratories suggests similar underlying perceptual mechanisms.