An ERP study of continuous speech processing I. Segmentation, semantics, and syntax in native speakers
An ERP study of continuous speech processing I. Segmentation, semantics, and syntax in native speakers
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DOI：
10.1016/s0926-6410(02)00195-7
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发表时间：
2003-02-01
期刊：
影响因子：
--
通讯作者：
Neville, HJ
中科院分区：
文献类型：
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作者：
Sanders, LD;Neville, HJ
语音分割是听觉语言处理中的一个必要步骤，它将连续的声音流分解为可识别的单元。到目前为止，大多数语音分割的研究都局限于行为措施，可能不会索引在线分割，因为它发生在听自然语音。在本研究中，我们测量了等同于响度、长度和音素内容的词首和词中音节诱发的事件相关电位（ERP）。这种比较提供了一种在线测量自然语音分割的方法。词首的声音引起了更大的早期感觉成分（N100）。此外，我们测量的语义和句法信息对语音分割的效果，通过比较ERPs的词首和词中音节的句子具有不同的语义和句法内容。结果表明，无论是语义或句法信息是必要的词首切分效应被观察到。我们还确定了额外的ERP组件，索引更一般的语义和句法方面的自然语音处理。(C)2002 Elsevier Science B.V.保留所有权利。
Speech segmentation, breaking continuous streams of sound into units that can be recognized, is a necessary step in auditory language processing. To date, most studies of speech segmentation have been limited to behavioral measures that may not index online segmentation as it occurs when listening to natural speech. In, the present study, we measured event-related potentials (ERPs) evoked by word-initial and word-medial syllables equated for loudness, length, and phonemic content. This comparison provided an online measure of natural speech segmentation. Word-initial sounds elicited a larger early sensory component (N100). In addition, we measured the effects of semantic and syntactic information on speech segmentation by comparing ERPs to word-initial and word-medial syllables in sentences with varying amounts of semantic and syntactic content. The results indicated that neither semantic nor syntactic information is necessary for the word-onset segmentation effect to be observed. We also identified additional ERP components that index more general semantic and syntactic aspects of natural speech processing. (C) 2002 Elsevier Science B.V. All rights reserved.