Cortical encoding and neurophysiological tracking of intensity and pitch cues signaling English stress patterns in native and nonnative speakers

被引:13
作者
Chung, Wei-Lun [1 ]
Bidelman, Gavin M. [1 ,2 ]
机构
[1] Univ Memphis, Sch Commun Sci & Disorders, 4055 North Pk Loop, Memphis, TN 38152 USA
[2] Univ Memphis, Inst Intelligent Syst, Memphis, TN 38152 USA
关键词
Suprasegmental phonology; Prosody; Auditory event-related brain potentials (ERPs); Mismatch negativity (MMN); Mandarin Chinese; MISMATCH NEGATIVITY MMN; AUDITORY-CORTEX; HUMAN BRAIN; FREQUENCY DISCRIMINATION; PHONEME REPRESENTATIONS; CATEGORICAL PERCEPTION; SPEECH-PERCEPTION; LEXICAL STRESS; ACOUSTIC CUES; WORD STRESS;
D O I
10.1016/j.bandl.2016.04.004
中图分类号
R36 [病理学]; R76 [耳鼻咽喉科学];
学科分类号
100104 ; 100213 ;
摘要
We examined cross-language differences in neural encoding and tracking of intensity and pitch cues signaling English stress patterns. Auditory mismatch negativities (MMNs) were recorded in English and Mandarin listeners in response to contrastive English pseudowords whose primary stress occurred either on the first or second syllable (i.e., "nocTICity" vs. "NOCticity"). The contrastive syllable stress elicited two consecutive MMNs in both language groups, but English speakers demonstrated larger responses to stress patterns than Mandarin speakers. Correlations between the amplitude of ERPs and continuous changes in the running intensity and pitch of speech assessed how well each language group's brain activity tracked these salient acoustic features of lexical stress. We found that English speakers' neural responses tracked intensity changes in speech more closely than Mandarin speakers (higher brain-acoustic correlation). Findings demonstrate more robust and precise processing of English stress (intensity) patterns in early auditory cortical responses of native relative to nonnative speakers. (C) 2016 Elsevier Inc. All rights reserved.
引用
收藏
页码:49 / 57
页数:9
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