Identifying acoustic-level and language-specific sensory processing mechanisms

识别声学级别和语言特定的感觉处理机制

• 批准号: 10711229
• 负责人: Monica Wagner
• 金额: $ 20.5万
• 依托单位: ST. JOHN'S UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-08-21 至 2027-07-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10711229
• 关键词: Acoustics; Adult; Attention; Auditory; Auditory Evoked Potentials; Auditory area; Behavioral; Brain; Brain region; Complex; Cues; Data Analyses; Data Set; Development; Electroencephalography; English Language; Etiology; Feedback; Frequencies; Goals; Hearing; Impairment; Individual; Investigation; Language; Language Development; Linguistics; Measures; Methods; Nature; Outcome; Participant; Pattern; Perception; Polishes; Positioning Attribute; Process; Reporting; Sensory; Signal Transduction; Source; Spatial Distribution; Speech; Speech Perception; Speech Sound; Stimulus; Stream; Stress; Testing; Time; density; experience; language comprehension; neural; neurotransmission; non-Native; phonology; response; selective attention; speech processing; time use

Speech perception is modulated by experiences with native language phonotactic patterns. Sensory processing of speech is fundamental to perception, language learning, and language comprehension however much is unknown about how neural signals become language-specific within the cortical information stream. Preliminary evidence suggests that language experience with phonotactic patterns modulates acoustic-level sensory processing at early cortical stages (<150 ms) through feedback within the low frequency bands of the electroencephalogram (EEG). However, there are conflicting reports on the timing of the modulatory effects, and few, if any, cross-linguistic investigations of native and non-native phonotactic patterns that examine the direction of information flow within cortical networks. For this project, we will analyze 96 EEG datasets, previously obtained from 24 native Polish and 24 native English-speaking adults as they listened to same and different spoken nonword pairs during two listening conditions, an Attend and Passive condition. Nonwords within the pairs contained the onset sequences /pt/, /pət/, /st/, and /sət/ that occur in the Polish and English languages, except for /pt/, which never occurs in English in the word onset position. Analysis of this dataset will test the hypothesis that language-specific sensory processing occurs early within the cortical information stream (<150 ms) through information flow directed to phonological processing regions in auditory cortex. Multiple methods of analysis including AEPs, measures of time-frequency from brain source-level channels, current source density, and measures of brain connectivity, including coherence and Granger causality-based connectivity will be used to carry out the specific aims. Aim 1 will determine whether sensory processing of spoken nonwords is language-specific within the context of selective attention at early cortical stages. Aim 2 will evaluate whether sensory processing of spoken nonwords is language-specific within the context of repeated phonological sequences at early cortical stages. Aim 3 will determine the spatial distribution of language-specific activity and the direction of information flow during sensory processing of native and non- native phonotactic patterns and within the contexts of attention and repetition suppression. The outcomes will clarify sensory processing mechanisms of speech perception.

言语感知是通过母语语音感觉模式的经验来调节的。 然而，语音处理是感知、语言学习和语言理解的基础 关于神经信号如何在皮质信息流中变得特定于语言，目前还不清楚。 初步证据表明，具有语音趋向模式的语言体验可以调节声级 通过低频带内的反馈在早期皮质阶段（<150 ms）进行感觉处理 然而，关于调节作用的时间存在相互矛盾的报告。 很少（如果有的话）对母语和非母语音位模式进行跨语言研究来检查 在这个项目中，我们将分析 96 个脑电图数据集， 之前从 24 名以波兰语为母语的成年人和 24 名以英语为母语的成年人那里获得，因为他们听了相同的和 在两种听力条件（注意和被动非单词条件）下，有不同的口语非单词对。 在包含波兰语和英语中出现的起始序列 /pt/、/pət/、/st/ 和 /sət/ 的对中 语言中，除了 /pt/ 之外，它在英语中从未出现在该数据集的单词起始位置中。 检验以下假设：特定于语言的感觉处理发生在皮质信息的早期 通过信息流（<150 ms）定向到听觉皮层的语音处理区域。 多种分析方法，包括 AEP、脑源级通道的时频测量、 电流源密度和大脑连接性测量，包括一致性和基于格兰杰因果关系 连接性将用于实现特定目标，目标 1 将确定感官处理是否有效。 口语非单词是在早期皮质阶段选择性注意的背景下特定于语言的。 将评估口语非单词的感觉处理是否是特定于语言的上下文 目标 3 的早期皮质阶段的重复语音序列将决定空间分布。 母语和非母语的感觉处理过程中特定于语言的活动和信息流的方向 原生的语音趋向模式以及在注意力和重复抑制的背景下。 阐明言语感知的感觉处理机制。