Phonological Cascade in Speech Production

语音生成中的语音级联

基本信息

  • 批准号:
    7642525
  • 负责人:
  • 金额:
    $ 7.38万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
  • 财政年份:
    2007
  • 资助国家:
    美国
  • 起止时间:
    2007-07-01 至 2011-08-31
  • 项目状态:
    已结题

项目摘要

DESCRIPTION (provided by applicant): This research examines the degree to which different phonological processes in speech production interact with one another. Theories of speech production typically assume two distinct stages of phonological processing. First, lexical phonological processes retrieve coarse-grained representations of word form from long term memory. Phonetic processes then generate more fine-grained aspects of phonological structures. Although theories agree that two such processing stages are present, they disagree on the degree to which they interact with one another. The experiments proposed here test one specific proposal for the interaction of these stages: the phonological cascade hypothesis. This hypothesis proposes that although interaction between processes is present, it is restricted. Cascading activation supports interaction by allowing effects that originate within lexical phonological processing (e.g., word-level variables such as word frequency) to influence phonetic processing. Interaction is crucially limited by blocking feedback from phonetic to lexical phonological processes. This restriction on interaction prevents effects originating within phonetic processing (e.g., effects of fine-grained structure such as articulatory similarity) from directly influencing lexical phonological processing. Two series of experiments test this hypothesis. The first examines the performance of individuals with acquired deficits to lexical phonological or phonetic processing. The second examines experimentally induced speech errors in neurologically intact participants. The phonological cascade hypothesis predicts that speech errors generated within lexical phonological processes (either experimentally or via neurological damage) should show sensitivity to word-level variables (e.g., word frequency) but, due to the lack of feedback, be uninfluenced by fine-grained aspects of phonological structure (e.g., articulatory similarity). In contrast, due to cascade, speech errors generated during phonetic processing should be sensitive to both types of variables. Project Narrative: By addressing a relatively unexplored issue in how the sound structure of words is processed to support the production of speech, the experiments proposed here will provide the basis for richer, more detailed theories of language production. Furthermore, increasing our understanding of how the adult language processing system breaks down in aphasia may assist the development of more refined therapies for acquired speech production impairments.
描述(由申请人提供):这项研究考察了语音产生中不同语音过程相互影响的程度。语音产生的理论通常假设语音处理的两个不同阶段。首先,词汇语音过程从长期记忆中检索单词形式的粗粒度表示。然后,语音过程会生成更细粒度的语音结构。尽管理论认为存在两个这样的处理阶段,但他们对它们彼此相互作用的程度存在分歧。这里提出的实验测试了这些阶段相互作用的一个具体建议:语音级联假设。该假设提出,尽管进程之间存在交互,但它是受到限制的。级联激活通过允许词汇语音处理中产生的效果(例如词频等单词级变量)影响语音处理来支持交互。由于阻止从语音到词汇语音过程的反馈,交互受到严重限制。这种对交互的限制防止了源自语音处理的影响(例如,诸如发音相似性之类的细粒度结构的影响)直接影响词汇音系处理。两个系列的实验检验了这一假设。第一个检查是在词汇语音或语音处理方面有后天缺陷的个体的表现。第二项检查是在神经系统完好的参与者中通过实验诱发的言语错误。音系级联假说预测,词汇音系过程中产生的语音错误(无论是通过实验还是通过神经损伤)应该表现出对词级变量(例如词频)的敏感性,但由于缺乏反馈,不会受到音系结构的细粒度方面(例如发音相似性)的影响。相反,由于级联,语音处理过程中产生的语音错误应该对两种类型的变量都敏感。 项目叙述:通过解决如何处理单词的声音结构以支持语音产生的相对未探索的问题,这里提出的实验将为更丰富、更详细的语言产生理论提供基础。此外,增加我们对成人语言处理系统在失语症中如何崩溃的了解可能有助于开发针对获得性言语产生障碍的更精细的疗法。

项目成果

期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Mechanisms of interaction in speech production.
  • DOI:
    10.1080/01690960802299378
  • 发表时间:
    2009-05-01
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Baese-Berk M;Goldrick M
  • 通讯作者:
    Goldrick M
Linking speech errors and phonological grammars: Insights from Harmonic Grammar networks.
连接语音错误和语音语法:来自谐波语法网络的见解。
  • DOI:
    10.1017/s0952675709001742
  • 发表时间:
    2009
  • 期刊:
  • 影响因子:
    1.3
  • 作者:
    Goldrick,Matthew;Daland,Robert
  • 通讯作者:
    Daland,Robert
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MATTHEW A GOLDRICK其他文献

MATTHEW A GOLDRICK的其他文献

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{{ truncateString('MATTHEW A GOLDRICK', 18)}}的其他基金

Using Speech Acoustics to Reveal Motor Disruptions in Psychosis
利用语音声学揭示精神病中的运动障碍
  • 批准号:
    9898478
  • 财政年份:
    2019
  • 资助金额:
    $ 7.38万
  • 项目类别:
Phonological Cascade in Speech Production
语音生成中的语音级联
  • 批准号:
    7259317
  • 财政年份:
    2007
  • 资助金额:
    $ 7.38万
  • 项目类别:
Phonological Cascade in Speech Production
语音生成中的语音级联
  • 批准号:
    7452447
  • 财政年份:
    2007
  • 资助金额:
    $ 7.38万
  • 项目类别:

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