Speech Computations of the Human Superior Temporal Gyrus.

Speech Computations of the Human Superior Temporal Gyrus.
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DOI:
10.1146/annurev-psych-022321-035256
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发表时间:
2022-01-04
影响因子:
24.8
通讯作者:
Chang, Edward F.
Chang, Edward F.
中科院分区:
心理学1区
文献类型:
--
作者:
Bhaya-Grossman, Ilina;Chang, Edward F.

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人类的语音感知是由神经计算产生的,神经计算将外部声音语音信号转换为单词的内部表示。上级颞回(STG)包含非初级听觉皮层,是语音加工的关键部位。在这里,我们描述了如何在STG的语音声音表示依赖于从根本上非线性和动态的过程,如分类,规范化,上下文恢复,和提取的时间结构。STG上的局部皮层位点的空间马赛克表现出复杂的听觉编码不同的声学语音和韵律特征。我们建议,作为一个人口合奏,这些分布式模式的神经活动引起抽象的,高阶音素和音节的代表,支持语音感知。本文提出了一个多尺度的,在STG的语音处理的循环模型,突出听觉和语言系统之间的关键接口。
Human speech perception results from neural computations that transform external acoustic speech signals into internal representations of words. The superior temporal gyrus (STG) contains the nonprimary auditory cortex and is a critical locus for phonological processing. Here, we describe how speech sound representation in the STG relies on fundamentally nonlinear and dynamical processes, such as categorization, normalization, contextual restoration, and the extraction of temporal structure. A spatial mosaic of local cortical sites on the STG exhibits complex auditory encoding for distinct acoustic-phonetic and prosodic features. We propose that as a population ensemble, these distributed patterns of neural activity give rise to abstract, higher-order phonemic and syllabic representations that support speech perception. This review presents a multi-scale, recurrent model of phonological processing in the STG, highlighting the critical interface between auditory and language systems.
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