Incidental Categorization of Vibrotactile Stimuli
Incidental Categorization of Vibrotactile Stimuli
复制标题
振动触觉刺激的附带分类
DOI：
10.1109/toh.2020.2965446
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发表时间：
2020
影响因子：
2.9
通讯作者：
Tan, Hong Z.
中科院分区：
文献类型：
--
作者：
Martinez, Juan S.;Holt, Lori L.;Reed, Charlotte M.;Tan, Hong Z.
过去的研究已经证明了任务无关的视觉和听觉刺激的附带学习。出于类似的证据在触觉领域和触觉语音通信系统中的潜在应用的可能性，我们调查了偶然的分类的振动触觉刺激通过视觉任务的形状识别。进行了两个实验，参与者暴露于基于位置或基于运动的振动触觉刺激之前，执行一个快速响应的两个目标之一。这两个实验的不同之处仅在于所采用的特定刺激组。在参与者不知道的情况下，振动触觉刺激和视觉目标最初完全相关，以促进其关联的附带学习，短暂不相关，以检查反应时间的成本，并再次相关，以重新建立初始关联。最后，参与者被要求预测新的基于位置和基于运动的刺激的视觉目标。从这两个实验的结果提供了证据的附带分类的振动触觉刺激。从两个实验中的新刺激的公开分类的正确性得分和敏感性指数都远远高于机会，表明学习的泛化。虽然这两个实验都表明，当振动触觉刺激和视觉目标之间的联系被破坏时，反应时间会增加，但这种反应时间成本只对第二个实验中使用的刺激有意义。我们的发现，在触觉领域的附带分类有重要意义的有效收购的语音在触觉语音通信系统。
Past research has demonstrated incidental learning of task-irrelevant visual and auditory stimuli. Motivated by the possibility of similar evidence in the tactile domain and potential applications in tactile speech communication systems, we investigated incidental categorization of vibrotactile stimuli through a visuomotor task of shape identification. Two experiments were conducted where participants were exposed to position-based or movement-based vibrotactile stimuli prior to performing a speeded response to one of two targets. The two experiments differed only in the particular sets of such stimuli employed. Unbeknownst to the participants, the vibrotactile stimuli and visual targets were initially correlated perfectly to facilitate the incidental learning of their associations, briefly uncorrelated to check the cost in reaction time, and correlated again to re-establish the initial association. Finally, participants were asked to predict visual targets from novel position-based and movement-based stimuli. The results from both experiments provided evidence of incidental categorization of vibrotactile stimuli. The percent-correct scores and sensitivity indices for the overt categorization of novel stimuli from both experiments were well above chance, indicating generalization of learning. And while both experiments showed an increase in reaction time when the association between vibrotactile stimuli and visual targets was disrupted, this reaction time cost was significant only for the stimuli used in the second experiment. Our finding of incidental categorization in the tactile domain has important implications for the effective acquisition of speech in tactile speech communication systems.
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