Ware John, Cha Elizabeth, Peshkin Michael A, Colgate J Edward, Klatzky Roberta L
IEEE Trans Haptics. 2014 Oct-Dec;7(4):545-50. doi: 10.1109/TOH.2014.2323257.
Haptic interfaces controlled by a single fingertip or hand-held probe tend to display surface features individually, requiring serial search for multiple features. Novel surface haptic devices, however, have the potential to provide displays to multiple fingertips simultaneously, affording the possibility of parallel search. Using variable-friction surface haptic devices, we investigated the ability of participants to detect a target feature among a set of distractors in parallel across the fingers. We found that searches for a material property (slipperiness) and an illusory shape (virtual hole) were significantly impaired by distractors, while search for an abrupt discontinuity (virtual edge) was not. The efficiency of search for edges rendered by surface haptics suggests that they engage primitive detectors in the haptic perceptual system.
由单个指尖或手持探头控制的触觉界面倾向于单独显示表面特征，需要对多个特征进行串行搜索。然而，新型表面触觉设备有可能同时向多个指尖提供显示，从而提供并行搜索的可能性。我们使用可变摩擦表面触觉设备，研究了参与者在手指间并行检测一组干扰物中的目标特征的能力。我们发现，对材料属性（滑爽度）和虚幻形状（虚拟孔）的搜索会受到干扰物的显著影响，而对突然的不连续性（虚拟边缘）的搜索则不受影响。表面触觉呈现边缘的搜索效率表明，它们激活了触觉感知系统中的原始探测器。
