Finger-Braille is a tactile communication method used by people who are Deafblind. Individuals communicate Finger-Braille messages with combinations of taps on three fingers of each of the hands of the person receiving the communication. Devices have been developed to produce Finger-Braille symbols using different tactile stimulation methods. Before engaging in communication studies based on technologically-mediated Finger-Braille, we evaluated the relative efficacy of these methods by comparing two devices similarly constructed; the first based on widely employed eccentric rotating-mass vibrating motors and the other using specifically designed tapping actuators. We asked volunteers to identify the numerosity of presented items and for each device we measured (1) error-rate, (2) reaction time, (3) confidence ratings, and (4) a comparison of confidence ratings to actual performance. The four measures obtained for each device showed a net advantage of the tapping stimulation method over the method of vibrations. In this article, we conclude that the tapping stimulation method is recommended for use in the design of tactile communication devices based on Finger-Braille and fingerspelling methods reliant on finger tapping actions. The results did not demonstrate clear evidence for tactile subitising with passively experienced stimulation on the fingers.

中文翻译：

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用于评估触觉刺激方法的数量识别

手指盲文是聋盲人使用的一种触觉交流方式。个人通过在接收通信的人的每只手的三个手指上轻敲的组合来传达手指盲文消息。已开发出使用不同触觉刺激方法生成手指盲文符号的设备。在进行基于技术介导的手指盲文通信研究之前，我们通过比较两种结构相似的设备来评估这些方法的相对有效性；第一个基于广泛使用的偏心旋转质量振动电机，另一个使用专门设计的攻丝执行器。我们要求志愿者确定所展示物品的数量以及我们测量的每个设备的 (1) 错误率，(2) 反应时间，(3) 置信度，(4) 信心评级与实际表现的比较。为每个设备获得的四项测量显示了敲击刺激方法相对于振动方法的净优势。在本文中，我们得出结论，建议将敲击刺激方法用于基于手指盲文的触觉通信设备和依赖于手指敲击动作的手指拼写方法的设计。结果并没有显示出明显的证据表明在手指上被动体验刺激的触觉subitising。我们得出的结论是，建议将敲击刺激方法用于基于手指盲文的触觉通信设备和依赖于手指敲击动作的手指拼写方法的设计。结果并没有显示出明显的证据表明在手指上被动体验刺激的触觉subitising。我们得出的结论是，建议将敲击刺激方法用于基于手指盲文的触觉通信设备和依赖于手指敲击动作的手指拼写方法的设计。结果并没有显示出明显的证据表明在手指上被动体验刺激的触觉subitising。