Yem Vibol, Kajimoto Hiroyuki
IEEE Trans Haptics. 2017 Jan-Mar;10(1):130-134. doi: 10.1109/TOH.2016.2605084. Epub 2016 Sep 5.
An electrotactile display is a tactile interface that provides tactile perception by passing electrical current through the surface of the skin. It is actively used instead of mechanical tactile displays for tactile feedback because of several advantages such as its small and thin size, light weight, and high responsiveness. However, the similarities and differences between these sensations is still not clear. This study directly compares the intensity sensation of electrotactile stimulation to that of mechanical stimulation, and investigates the characteristic sensation of anodic and cathodic stimulation. In the experiment, participants underwent a 30 pps electrotactile stimulus every one second to their middle finger, and were asked to match this intensity by adjusting the intensity of a mechanical tactile stimulus to an index finger. The results showed that anodic stimulation mainly produced vibration sensation, whereas cathodic sensation produced both vibration and pressure sensations. Relatively low pressure sensation was also observed for anodic stimulation but it remains low, regardless of the increasing of electrical intensity.
电触觉显示器是一种触觉接口，通过让电流通过皮肤表面来提供触觉感知。由于其尺寸小、薄、重量轻和响应速度快等优点，它被积极地用于代替机械触觉显示器进行触觉反馈。然而，这些感觉之间的异同仍然不清楚。本研究直接比较了电触觉刺激与机械刺激的强度感觉，并研究了阳极和阴极刺激的特征感觉。在实验中，参与者每秒钟对其中指施加一次30次/秒的电触觉刺激，并被要求通过调整对食指的机械触觉刺激强度来匹配该强度。结果表明，阳极刺激主要产生振动感觉，而阴极刺激产生振动和压力感觉。阳极刺激也观察到相对较低的压力感觉，但无论电强度如何增加，它仍然较低。
