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听触觉刺激的快速时间校正
Rapid Temporal Recalibration of Auditory-Tactile Stimuli

DOI: 10.12677/AP.2020.106104, PP. 868-874

Keywords: 多模态整合，听觉触觉整合，时间校正，同时性判断，主观同时性点
Multisensory Integration, Auditory-Tactile Integration, Temporal Calibration, Simultaneity Judgment, Point of Subjective Simultaneity

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Abstract:

本文探究在听触觉多模态整合过程中，是否存在快速时间校正的现象。我们利用听触觉双刺激系统，采用心理物理实验的方法，设计了同时性判断任务，对11名被试者的听触觉感知主观同时性点进行了测量。结果发现，仅在单次试次的适应情况下，被试的听触觉感知的主观同时性点(PSS)就发生了偏移。并且当适应试次的SOA发生变化时，主观同时性点的偏移量也会发生相应的变化；而当适应试次的模态顺序发生变化时，主观同时性点的偏移并未发生显著变化。结论：听触觉刺激间存在着快速时间校正机制，并且这种在线式的即时校正受到适应试次的SOA的调制。
This study investigated rapid temporal calibration during auditory-tactile multisensory integration. By using an auditory-tactile bimodal stimulation system and psychophysical methods, we measured 11 subjects’ point of subjective simultaneity (PSS) in a simultaneity judgment task. We showed that the subject’s PSS shifted rapidly after the exposure to single trial. We further showed that when the adaptive trial’s stimulus onset asynchrony (SOA) varied, the PSS offset changed accordingly, but there was no significant change in PSS when the order of stimulus modality was switched. We conclude that rapid temporal recalibration occurs in audio-tactile integration, and the online recalibration mechanism is modulated by the adaptive trial’s SOA magnitude.

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