Temporal masking of multidimensional tactual stimuli.
Temporal masking of multidimensional tactual stimuli.
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DOI：
10.1121/1.1623788
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发表时间：
2003-12
期刊：
影响因子：
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通讯作者：
H. Tan;C. Reed;L. Delhorne;N. Durlach;Natasha Wan
中科院分区：
文献类型：
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作者：
H. Tan;C. Reed;L. Delhorne;N. Durlach;Natasha Wan
进行实验以检查传递到左食指的多维触觉刺激模式的时间掩蔽特性。刺激包括在动觉（2或4 Hz），中频（30 Hz）和皮肤（300 Hz）频率范围内的固定频率正弦运动。在两个信号持续时间（125或250 ms）的每一个，由一个，两个，或三个频谱分量组成的七个刺激。受试者在三种不同的掩蔽范式下识别目标信号：前掩蔽、后掩蔽和夹心掩蔽（其中目标呈现在两个掩蔽物之间）。目标识别作为一个函数的刺激间间隔（ISI）在0至640毫秒的范围内进行了研究。对于两个信号的持续时间，三个掩蔽范式的ISI增加，正确的分数。得分与前向和后向掩蔽是相似的，显着高于得分与三明治掩蔽。错误试验的分析表明，受试者表现出一种倾向，往往比机会，与掩蔽，复合的掩蔽和目标，或组合的目标和组成部分的掩蔽。目前的结果进行比较，在以前的研究中获得的触觉识别掩蔽与简短的皮肤空间模式。结果还讨论了信息传递（IT）和IT率的估计方面，与以前的研究相比，多维触觉信号，并与聋人的触觉援助的发展研究。
Experiments were performed to examine the temporal masking properties of multidimensional tactual stimulation patterns delivered to the left index finger. The stimuli consisted of fixed-frequency sinusoidal motions in the kinesthetic (2 or 4 Hz), midfrequency (30 Hz), and cutaneous (300 Hz) frequency ranges. Seven stimuli composed of one, two, or three spectral components were constructed at each of two signal durations (125 or 250 ms). Subjects identified target signals under three different masking paradigms: forward masking, backward masking, and sandwiched masking (in which the target is presented between two maskers). Target identification was studied as a function of interstimulus interval (ISI) in the range 0 to 640 ms. For both signal durations, percent-correct scores increased with ISI for each of the three masking paradigms. Scores with forward and backward masking were similar and significantly higher than scores obtained with sandwiched masking. Analyses of error trials revealed that subjects showed a tendency to respond, more often than chance, with the masker, the composite of the masker and target, or the combination of the target and a component of the masker. The current results are compared to those obtained in previous studies of tactual recognition masking with brief cutaneous spatial patterns. The results are also discussed in terms of estimates of information transfer (IT) and IT rate, are compared to previous studies with multidimensional tactual signals, and are related to research on the development of tactual aids for the deaf.