Tactile perception is an increasingly popular gateway in human-machine interaction, yet universal design guidelines for tactile displays are still lacking, largely due to the absence of methods to measure sensibility across skin areas. In this study, we address this gap by developing and evaluating two fully automated vibrotactile tasks that require subjects to discriminate the position of vibrotactile stimuli using a two-interval forced-choice procedure (2IFC). Of the two methodologies, one was initially validated through a preliminary study involving 13 participants. Subsequently, we applied the validated and improved vibrotactile testing procedure to a larger sample of 23 participants, enabling a direct and valid comparison with static perception. Our findings reveal a significantly finer spatial acuity for static stimuli perception compared to vibrotactile stimuli perception from a stimulus separation of 15 mm onwards. This study introduces a novel method for generating both universal thresholds and individual person-specific data for vibratory perception, marking a critical step towards the development of functional vibrotactile displays. The results underline the need for further research in this area and provide a foundation for the development of universal design guidelines for tactile displays.

翻译：触觉感知在人机交互中日益成为重要的途径，然而，触觉显示的通用设计指南仍然缺乏，这在很大程度上是因为缺少测量不同皮肤区域感知能力的方法。在本研究中，我们通过开发和评估两种全自动振动触觉任务来填补这一空白，这些任务要求受试者使用两区间强制选择程序（2IFC）区分振动触觉刺激的位置。在这两种方法中，一种通过包含13名参与者的初步研究得到初步验证。随后，我们将经过验证和改进的振动触觉测试程序应用于更大的样本（23名参与者），从而能够与静态感知进行直接且有效的比较。我们的研究结果显示，从刺激间隔15毫米开始，静态刺激感知的空间敏锐度显著优于振动触觉刺激感知。本研究引入了一种新方法，用于生成振动感知的通用阈值和个体特异性数据，这标志着向开发功能性振动触觉显示迈出了关键一步。这些结果强调了在该领域进一步研究的必要性，并为制定触觉显示的通用设计指南奠定了基础。