Evaluating the Effect of Stimulus Duration on Vibrotactile Cue Localizability With a Tactile Sleeve
Evaluating the Effect of Stimulus Duration on Vibrotactile Cue Localizability With a Tactile Sleeve
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DOI：
10.1109/toh.2021.3079727
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发表时间：
2021-04-01
影响因子：
2.9
通讯作者：
K. O'Malley, Marcia
中科院分区：
文献类型：
--
作者：
S. Macklin, Alix;M. Yau, Jeffrey;K. O'Malley, Marcia
振动触觉阵列作为可穿戴触觉设备很有吸引力，因为设计师可以改变参数，包括提示位置和持续时间，以创建不同的触觉图标来代表广泛的信息。振动触觉套通常使用持续时间从100毫秒到400毫秒不等的线索，但线索持续时间如何影响刺激的可定位性尚不清楚。我们使用一种通常用来理解我们的视觉系统如何定位刺激的实验方案，研究了在前臂固定位置间隔的触觉线索的定位，同时我们在100到400毫秒之间改变线索的持续时间。为了验证我们的实验方法和硬件，我们还评估了视觉线索定位性能。我们的视觉线索定位结果与先前的实验一致，表明视觉线索中的不同噪音影响线索定位。更重要的是，这个实验范式使我们能够验证参与者能够成功地定位触觉线索，而不考虑持续时间。触觉定位反应差异明显大于视觉定位反应差异。刺激位置对触觉定位也有影响。我们的研究结果支持触觉提示持续时间在100到400 ms范围内的变化，这些变化是由前臂上的触觉阵列引起的。
Vibrotactile arrays are appealing as wearable haptic devices, since designers can vary parameters including cue location and duration to create distinct haptic icons to represent a wide range of information. Vibrotactile sleeves have typically used cues that vary in duration from 100 to 400 ms, but it is not well understood how cue duration might affect localizability of stimuli. Using an experimental protocol typically employed to understand how our visual system can localize stimuli, we examined localization of tactile cues for tactors spaced at fixed locations along the forearm while we varied cue duration between 100 and 400 ms. To validate our experimental methods and hardware, we also evaluated visual cue localization performance. Our visual cue localization results were in agreement with prior experiments showing that varying noise in visual cues affects cue localization. More importantly, this experimental paradigm allowed us to verify that participants could successfully localize tactile cues regardless of duration. Response variance in tactile localizability was much greater than the visual case. There was also an effect of stimulus location on tactile localization performance. Our findings support the variation of tactile cue duration in the 100 to 400 ms range for tactile arrays positioned on the forearm.