The mechanism of speech processing in congenital amusia: evidence from Mandarin speakers.
The mechanism of speech processing in congenital amusia: evidence from Mandarin speakers.
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DOI：
10.1371/journal.pone.0030374
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Stewart L
中科院分区：
文献类型：
--
作者：
Liu F;Jiang C;Thompson WF;Xu Y;Yang Y;Stewart L
先天性失听症是一种音高感知的神经发育障碍，它会导致音乐处理的严重问题，但在语音处理方面只会造成轻微的困难。本研究探讨了一组先天性失读症患者的言语加工过程。13名普通话娱乐者和13名对照者被试参与了一组声调和语调知觉任务和两个音高阈值任务。与对照组相比，amusics表现出受损的表现在自然语音和他们的滑音模拟词的歧视。他们也表现得比对照组差的区别滑音序列来自语句和问题，并表现出升高的阈值音高变化检测和音高方向歧视。然而，他们表现以及控制词识别，并在陈述问题的识别和歧视，在自然语音。总的来说，任务，涉及多个声学线索的沟通意义不受音乐失认症。只有当任务主要依赖于音高敏感性时，与控制组相比，娱乐组才表现出受损的表现。这些发现有助于解释为什么失乐症只以微妙的方式影响语音处理。这些研究结果还需要进一步对汉语普通话和其他语言背景下的音乐进行研究。
Congenital amusia is a neuro-developmental disorder of pitch perception that causes severe problems with music processing but only subtle difficulties in speech processing. This study investigated speech processing in a group of Mandarin speakers with congenital amusia. Thirteen Mandarin amusics and thirteen matched controls participated in a set of tone and intonation perception tasks and two pitch threshold tasks. Compared with controls, amusics showed impaired performance on word discrimination in natural speech and their gliding tone analogs. They also performed worse than controls on discriminating gliding tone sequences derived from statements and questions, and showed elevated thresholds for pitch change detection and pitch direction discrimination. However, they performed as well as controls on word identification, and on statement-question identification and discrimination in natural speech. Overall, tasks that involved multiple acoustic cues to communicative meaning were not impacted by amusia. Only when the tasks relied mainly on pitch sensitivity did amusics show impaired performance compared to controls. These findings help explain why amusia only affects speech processing in subtle ways. Further studies on a larger sample of Mandarin amusics and on amusics of other language backgrounds are needed to consolidate these results.
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影响因子：
1.9
作者：
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通讯作者：
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影响因子：
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