ObjectiveThis study investigates the impact of whole-body vibrations caused by external vehicle perturbations, such as aircraft turbulence, on the perception of electrovibration displayed on touchscreens.BackgroundElectrovibration is a promising technology for providing tactile feedback on future touchscreens, potentially addressing usability challenges in vehicle cockpits. However, its performance under dynamic conditions, such as whole-body vibrations caused by turbulence, remains largely unexplored.MethodWe measured the absolute detection thresholds of 24 human participants for short (0.2 s) and long (0.5 s) duration electrovibration stimuli displayed on a touchscreen. These measurements were taken in the absence and presence of two types of turbulence motion (Gaussian and Multisine) generated by a motion simulator. Concurrently, we recorded participants' applied contact force and finger displacements.ResultsElectrovibration stimuli displayed on vehicle cockpit touchscreens were more reliably perceived with a 0.5-s duration than a 0.2-s duration, both in the presence and absence of turbulence. Both turbulence types led to increased vibration-induced finger displacements and scan speeds in the direction of turbulence, as well as higher applied forces and force fluctuation rates. Gaussian turbulence significantly elevated perception thresholds, but only for short-duration electrovibration stimuli.ConclusionThe findings indicate that whole-body vibrations impair the perception of short-duration electrovibration stimuli, primarily due to unintentional finger movements and increased fluctuations in applied normal force.ApplicationOur findings offer valuable insights for the future design of touchscreens with tactile feedback in vehicle cockpits.

Keywords: biodynamics; haptics; psychophysics; tactile displays; touchscreens.

目标：本研究调查了由外部车辆扰动（如飞机颠簸）引起的全身振动对触摸屏上电摩擦感感知的影响。 背景：电摩擦是一种有前景的技术，可以在未来的触摸屏上提供触觉反馈，从而解决机舱驾驶舱中的可用性挑战。然而，在动态条件下（例如由湍流引起的全身振动），其性能仍然很大程度上未被探索。 方法：我们测量了24名参与者在触摸屏上显示的短（0.2秒）和长（0.5秒）持续时间电摩擦刺激的绝对检测阈值。这些测量分别在生成高斯和多正弦两种湍流运动的运动模拟器存在或不存在的情况下进行。同时，我们记录了参与者的接触力和手指位移。 结果：无论有无湍流，在车辆驾驶舱触摸屏上显示的电摩擦刺激以0.5秒持续时间比0.2秒持续时间感知得更可靠。两种类型的湍流都导致振动引起的指位移和扫描速度朝着湍流方向增加，以及施加力和力波动率升高。高斯湍流显著提高了短持续时间电摩擦刺激的感知阈值。 结论：研究结果表明，全身振动会损害对短持续时间电摩擦刺激的感知，主要是由于无意的手指移动和施加法向力波动的增加。 应用：我们的发现为未来在车辆驾驶舱触摸屏设计中使用触觉反馈提供了有价值的见解。

关键词：生物动力学；触觉；心理物理学；触觉显示；触摸屏。