Precision of voicing perceptual identification is altered in association with voice-onset time production change
Precision of voicing perceptual identification is altered in association with voice-onset time production change
复制标题
发声感知识别的精确度随着发声时间产生的变化而改变
DOI：
10.1007/s00221-019-05584-1
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发表时间：
2019
影响因子：
2
通讯作者：
Mori Shuji
中科院分区：
文献类型：
--
作者：
Shunsuke Tamura;Kazuhito Ito;Nobuyuki Hirose;Mori Shuji
有充分的证据表明，运动学习改变知觉系统的功能。以往的研究探讨言语产生和感知之间的相互作用表明，语音对比的区别，其特点是发音位置的特点是改变后，他们的生产变化引起的听觉反馈的扰动。本研究以语音起始时间（VOT）为时间性发音参数，对塞音中的有无音对比进行了研究。在实验中，我们使用跨类别听觉反馈（CAF）范例（Mitsuya等人，J Acoust Soc Am 135：2986-2994，2014）操纵参与者关于VOT的运动功能，其中以浊塞音（/da/）开始的预先记录的音节声音与参与者的无浊塞音（/ta/）的发音同时反馈，反之亦然。CAF增加了/da/和/ta/生产之间的VOT差异，这与Mitsuya的研究结果一致。此外，我们进行了知觉识别任务的/da/-/ta/连续体刺激不同的VOT之前和之后的CAF任务，并发现识别功能变得更加尖锐后，与之前相比，CAF任务。在此基础上，我们认为，与VOT相关的运动功能的改变影响了无重复-重复的知觉加工。本研究是第一次显示语音产生系统的参与感知语音对比的发音时间特征。
There is ample evidence that motor learning changes the function of perceptual systems. Previous studies examining the interactions between speech production and perception have shown that the discrimination of phonetic contrasts characterized by the difference in articulatory place features is altered following their production changes caused by the perturbation of auditory feedback. The present study focused on a voiced–voiceless contrast in stop consonants, which is characterized by a temporal articulatory parameter, voice-onset time (VOT). In the experiment, we manipulated the participants’ motor functions concerning VOT using a cross-categorical auditory feedback (CAF) paradigm (Mitsuya et al. in J Acoust Soc Am 135:2986–2994, 2014), in which a pre-recorded syllable sound starting with a voiced stop consonant (/da/) was fed back simultaneously with the participant’s utterance of a voiceless stop consonant (/ta/), and vice versa. The VOT difference between /da/ and /ta/ productions was increased by the CAF, which is consistent with the result of Mitsuya’s study. In addition, we conducted perceptual identification tasks of /da/-/ta/ continuum stimuli varying in VOT before and after the CAF task, and found that the identification function became sharper after as compared to before the CAF task. A significant positive correlation between such production and perception changes was also found. On the basis of these results, we consider that the change in motor function concerning VOT affected voiced–voiceless perceptual processing. The present study is the first to show the involvement of the speech production system in the perception of phonetic contrasts characterized by articulatory temporal features.