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.

中文翻译：

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使用触觉套筒评估刺激持续时间对振动触觉提示定位能力的影响


振动触觉阵列作为可穿戴触觉设备很有吸引力，因为设计人员可以改变提示位置和持续时间等参数，以创建不同的触觉图标来表示广泛的信息。振动触觉套筒通常使用持续时间从 100 到 400 毫秒不等的提示，但目前尚不清楚提示持续时间如何影响刺激的定位性。使用通常用于了解我们的视觉系统如何定位刺激的实验方案，我们检查了沿着前臂分布在固定位置的接触器的触觉提示的定位，同时我们在 100 到 400 毫秒之间改变提示持续时间。为了验证我们的实验方法和硬件，我们还评估了视觉提示定位性能。我们的视觉线索定位结果与之前的实验一致，表明视觉线索中不同的噪声会影响线索定位。更重要的是，这种实验范式使我们能够验证参与者能够成功定位触觉线索，无论持续时间如何。触觉定位的响应方差远大于视觉情况。刺激位置对触觉定位性能也有影响。我们的研究结果支持位于前臂上的触觉阵列的触觉提示持续时间在 100 到 400 毫秒范围内的变化。