Behavioral and neurophysiological investigations of individual variation in cue weighting strategies

线索加权策略个体差异的行为和神经生理学研究

基本信息

批准号：
1827409
负责人：
Alan Yu
金额：
$ 48.05万
依托单位：
University of Chicago
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-09-01 至 2024-02-29
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1827409&HistoricalAwards=false
关键词：
Behavioral neurophysiological investigations individual variation

项目摘要

The perception of speech sounds often requires listeners to pay attention to multiple cues at once. The weighting of the relative importance of cues can nonetheless vary across individuals. Little is known regarding the sources of such variation, however. This project will investigate potential mechanisms underpinning such variability. The project will broaden the empirical database on which theories of speech perception and production are grounded as well as providing insights into first/second language acquisition and pedagogy in terms of the development of personalized training for individual language learners. The project will also introduce young women and under-represented minorities to STEM fields via the study of the language sciences through planned outreach programs. The findings from this project may inform clinical research on developmental or acquired perceptual and language impairments, and may also serve to inform research on speech related technologies.This project focuses on two potential explanations for individual variability in cue weighting. Listeners might differ in early auditory encoding, which affects the reliability, hence weighting, of certain cues that support phonological contrasts. Listeners might also differ in cue integration strategy such that some utilize a continuous cue integration strategy whereby cue information is integrated as they become available, while others might employ a buffer strategy so that phonemic identification is postponed until all necessary information becomes available. This project will investigate individual variability in cue weighting using brainstem and cortical responses to speech sounds within the same individual, thus providing a comprehensive neurophysiological profile that underlies individual patterns of real-time cue weighting process, as measured with eye-movements.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

对语音的感知通常需要听众同时注意多个线索。尽管如此，线索相对重要性的权重可能因人而异。然而，人们对这种变异的来源知之甚少。该项目将研究支撑这种变异性的潜在机制。该项目将扩大语音感知和产生理论基础的实证数据库，并在为个体语言学习者开发个性化培训方面提供对第一/第二语言习得和教学法的见解。该项目还将通过计划的外展计划，通过语言科学研究，向年轻女性和代表性不足的少数群体介绍 STEM 领域。该项目的研究结果可能为发育性或后天知觉和语言障碍的临床研究提供信息，也可能为语音相关技术的研究提供信息。该项目重点关注提示权重个体差异的两种潜在解释。听众的早期听觉编码可能有所不同，这会影响某些支持语音对比的线索的可靠性，从而影响其权重。听者在线索整合策略上也可能有所不同，一些人利用连续的线索整合策略，即线索信息在可用时被整合，而另一些人可能采用缓冲策略，以便推迟音素识别，直到所有必要的信息可用为止。该项目将利用同一个体内脑干和皮层对语音的反应来研究提示加权的个体差异，从而提供一个全面的神经生理学概况，该概况是通过眼球运动测量的实时提示加权过程的个体模式的基础。该奖项反映了通过使用基金会的智力价值和更广泛的影响审查标准进行评估，NSF 的法定使命被认为值得支持。