Transfer Effect of Speech-sound Learning on Auditory-motor Processing of Perceived Vocal Pitch Errors.
Transfer Effect of Speech-sound Learning on Auditory-motor Processing of Perceived Vocal Pitch Errors.
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语音学习对感知音调误差的听觉运动处理的传递效应
DOI：
10.1038/srep13134
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发表时间：
2015-08-17
影响因子：
4.6
通讯作者：
Liu H
中科院分区：
文献类型：
--
作者：
Chen Z;Wong FC;Jones JA;Li W;Liu P;Chen X;Liu H
言语的感知和产生是紧密相连的。有证据表明，言语运动学习导致言语听觉处理的变化。然而，言语运动控制是否受益于言语中的知觉学习仍不清楚。本研究采用事件相关电位研究了语音学习是否可以调节音高调节过程中反馈错误的处理。普通话使用者被训练感知五个泰语词汇音调，同时学习将图片与口语单词联系起来超过5天。在训练前后，参与者发出持续的元音，而他们听到的音高反馈意外地受到干扰。与训练前相比，对照组的声音补偿幅度显著降低，但在训练后训练组保持一致。然而，受过训练的一组有更小和更快的N1反应音高扰动，并表现出增强P2反应，与他们的学习成绩显着相关。这些研究结果表明，皮质处理的音高调节可以通过学习新的语音声音协会，这表明，知觉学习语音可以产生转移效应，以促进有关发声听觉反馈的在线监测的神经机制。
Speech perception and production are intimately linked. There is evidence that speech motor learning results in changes to auditory processing of speech. Whether speech motor control benefits from perceptual learning in speech, however, remains unclear. This event-related potential study investigated whether speech-sound learning can modulate the processing of feedback errors during vocal pitch regulation. Mandarin speakers were trained to perceive five Thai lexical tones while learning to associate pictures with spoken words over 5 days. Before and after training, participants produced sustained vowel sounds while they heard their vocal pitch feedback unexpectedly perturbed. As compared to the pre-training session, the magnitude of vocal compensation significantly decreased for the control group, but remained consistent for the trained group at the post-training session. However, the trained group had smaller and faster N1 responses to pitch perturbations and exhibited enhanced P2 responses that correlated significantly with their learning performance. These findings indicate that the cortical processing of vocal pitch regulation can be shaped by learning new speech-sound associations, suggesting that perceptual learning in speech can produce transfer effects to facilitating the neural mechanisms underlying the online monitoring of auditory feedback regarding vocal production.