Attention, Perception, & Psychophysics ( IF 1.7 ) Pub Date : 2021-03-26 , DOI: 10.3758/s13414-021-02254-9 Mercedes B. Villalonga , Rachel F. Sussman , Robert Sekuler
The growing use of vibrotactile signaling devices makes it important to understand the perceptual limits on vibrotactile information processing. To promote that understanding, we carried out a pair of experiments on vibrotactile, auditory, and bimodal (synchronous vibrotactile and auditory) temporal acuity. On each trial, subjects experienced a set of isochronous, standard intervals (400 ms each), followed by one interval of variable duration (400 ± 1–80 ms). Intervals were demarcated by short vibrotactile, auditory, or bimodal pulses. Subjects categorized the timing of the last interval by describing the final pulse as either “early” or “late” relative to its predecessors. In Experiment 1, each trial contained three isochronous standard intervals, followed by an interval of variable length. In Experiment 2, the number of isochronous standard intervals per trial varied, from one to four. Psychometric modeling revealed that vibrotactile stimulation produced poorer temporal discrimination than either auditory or bimodal stimulation. Moreover, auditory signals dominated bimodal sensitivity, and inter-individual differences in temporal discriminability were reduced with bimodal stimulation. Additionally, varying the number of isochronous intervals in a trial failed to improve temporal sensitivity in either modality, suggesting that memory played a key role in judgments of interval duration.
中文翻译:
带有触觉,听觉和多感觉刺激的感知定时精度
触觉触觉信号设备的使用越来越广泛,因此重要的是要了解触觉触觉信息处理的感知极限。为了促进这种理解,我们进行了关于触觉,听觉和双峰(同步触觉和听觉)颞视敏度的一对实验。在每次试验中,受试者经历一组等时的标准间隔(每个间隔400毫秒),然后经历一个可变持续时间的间隔(400±1–80毫秒)。间隔由短触觉,听觉或双峰脉搏界定。受试者通过将最终脉冲描述为相对于其前身“早”或“迟”来对最后间隔的时间进行了分类。在实验1中,每个试验都包含三个等时标准间隔,然后是一个可变长度的间隔。在实验2中,每次试用的等时标准间隔数从1到4不等。心理测验模型表明,触觉刺激比听觉刺激或双峰刺激产生的时间分辨力差。此外,听觉信号在双峰敏感性中占主导地位,并且在双峰刺激下,个体之间在时间可辨别性上的差异减小了。此外,在试验中改变等时间隔的数量不能提高两种方式的时间敏感性,这表明记忆在间隔持续时间的判断中起着关键作用。双峰刺激可减少个体间和时间上可分辨性之间的差异。此外,在试验中改变等时间隔的数量未能提高两种方式的时间敏感性,这表明记忆在间隔持续时间的判断中起着关键作用。双峰刺激可减少个体间和时间上可分辨性之间的差异。此外,在试验中改变等时间隔的数量未能提高两种方式的时间敏感性,这表明记忆在间隔持续时间的判断中起着关键作用。