Neural Dynamics Underlying the Emergence of Auditory Categorization and Learning

听觉分类和学习出现背后的神经动力学

基本信息

  • 批准号:
    10635118
  • 负责人:
  • 金额:
    $ 37.99万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
  • 财政年份:
    2018
  • 资助国家:
    美国
  • 起止时间:
    2018-05-16 至 2024-03-31
  • 项目状态:
    已结题

项目摘要

Project Summary Successful perception of the world requires that the human brain assemble diverse sensory information into common, well-formed groupings, a process known as categorical perception (CP). At its core, CP is known as the “invariance-” or “many-to-one mapping” problem: an infinite collection of sensory features must be converted into a finite, invariant perceptual space to be acted upon by the perceptual system. Categorization manifests in nearly all aspects of human cognition and learning including the perception of faces, colors, and music. Skilled categorization is particularly important in the context of spoken and written language as evident by its integral role in reading acquisition and auditory-based learning disorders (e.g., dyslexia, specific language impairment). Despite a wealth of behavioral studies and its importance to understanding receptive human communication, the neural mechanisms underlying the core ability of CP remain poorly understood. In a series of studies, the proposed work will address foundational questions of when, where, and how the brain converts continuous acoustic signals into discrete, meaningful categories exploited by the perceptual system. High-density neuroelectric brain recordings (EEG/ERP) will be obtained from human listeners during tasks designed to tap different attributes of categorical processing and modulate its neurobiology. Our central hypothesis is that auditory categorization skills recruit a common, parsimonious frontotemporal neural network that is both dynamically and differentially engaged depending on attention, familiarity of stimulus context/complexity, learning, and prior listening experience. Novel multivariate analytic techniques will be used to derive “neurometric functions” from listeners’ ERPs to “decode” listeners’ speech perception behaviors from their underlying brain activity. This common neurocomputational approach will be used to investigate several factors that modulate auditory categorization skills through five research aims: (Aim 1) the spatiotemporal emergence of CP in the brain; (Aim 2) linear vs. nonlinear signal dynamics; (Aim 3) identifying sounds from different domains (e.g., speech vs. music); (Aim 4) prior listening experience and novel learning. Aim 5 will measure functional connectivity from EEG recordings to determine how the directed flow of information within the CP brain network changes with the manipulations of prior aims (e.g., learning vs. processing mature categories). Providing a more complete biological description of the acoustic-to-phonetic mapping problem of CP will ultimately offer a window into not only normal speech perception but may reveal important neural mechanisms to target in disorders that impair the formation of auditory categories.
项目总结

项目成果

期刊论文数量(62)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Mandarin-speaking preschoolers' pitch discrimination, prosodic and phonological awareness, and their relation to receptive vocabulary and reading abilities.
讲普通话的学龄前儿童的音调歧视,韵律和语音意识以及他们与接受词汇和阅读能力的关系。
  • DOI:
    10.1007/s11145-020-10075-9
  • 发表时间:
    2021-03
  • 期刊:
  • 影响因子:
    2.5
  • 作者:
    Chung WL;Bidelman GM
  • 通讯作者:
    Bidelman GM
Children with amblyaudia show less flexibility in auditory cortical entrainment to periodic non-speech sounds.
Familiarity of Background Music Modulates the Cortical Tracking of Target Speech at the "Cocktail Party".
  • DOI:
    10.3390/brainsci12101320
  • 发表时间:
    2022-09-29
  • 期刊:
  • 影响因子:
    3.3
  • 作者:
    Brown, Jane A.;Bidelman, Gavin M.
  • 通讯作者:
    Bidelman, Gavin M.
Data-driven machine learning models for decoding speech categorization from evoked brain responses.
数据驱动的机器学习模型用于解码诱发的大脑反应的语音分类。
  • DOI:
    10.1088/1741-2552/abecf0
  • 发表时间:
    2021-03-23
  • 期刊:
  • 影响因子:
    4
  • 作者:
    Mahmud MS;Yeasin M;Bidelman GM
  • 通讯作者:
    Bidelman GM
Cross-linguistic and acoustic-driven effects on multiscale neural synchrony to stress rhythms.
跨语言和声学驱动对多尺度神经同步与应激节律的影响。
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Gavin M. Bidelman其他文献

Reply to Manley: Is there more to cochlear tuning than meets the ear?
致曼利的回复:人工耳蜗调试是否还有不为人知的更多内容?
  • DOI:
    10.1016/j.heares.2025.109218
  • 发表时间:
    2025-04-01
  • 期刊:
  • 影响因子:
    2.500
  • 作者:
    Gavin M. Bidelman
  • 通讯作者:
    Gavin M. Bidelman
Neural correlates of phonetic categorization under auditory (phoneme) and visual (grapheme) modalities
  • DOI:
    10.1016/j.neuroscience.2024.11.079
  • 发表时间:
    2025-01-26
  • 期刊:
  • 影响因子:
  • 作者:
    Gavin M. Bidelman;Ashleigh York;Claire Pearson
  • 通讯作者:
    Claire Pearson

Gavin M. Bidelman的其他文献

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{{ truncateString('Gavin M. Bidelman', 18)}}的其他基金

Neural Dynamics Underlying the Emergence of Auditory Categorization and Learning
听觉分类和学习出现背后的神经动力学
  • 批准号:
    9902399
  • 财政年份:
    2018
  • 资助金额:
    $ 37.99万
  • 项目类别:

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