Effects of Age on Cortical Tracking of Word-Level Features of Continuous Competing Speech.
Effects of Age on Cortical Tracking of Word-Level Features of Continuous Competing Speech.
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年龄对连续竞争语音的单词级特征的皮质跟踪的影响。
DOI：
10.3389/fnins.2021.635126
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发表时间：
2021
影响因子：
4.3
通讯作者：
Wojtczak M
中科院分区：
文献类型：
--
作者：
Mesik J;Ray L;Wojtczak M
噪音中的言语理解困难在老年人中很常见，然而传统的客观言语感知测量在很大程度上对这种缺陷不敏感，特别是在没有临床听力损失的情况下。近年来，越来越多的对听力正常的年轻成年人的研究表明，与语音语义和词汇可预测性相关的高级特征在单词出现后400毫秒左右的脑电图信号中引起强烈的中枢-顶叶负性。在这里，我们研究了年龄对两个说话者混合语音中这些词水平特征的皮质跟踪的影响，以及它们与自我报告的噪音语音理解困难的关系。在接受脑电图记录时，年轻和年长的成年参与者在有干扰物的情况下听了一个连续的叙事故事。然后，我们利用前向编码模型来估计四个语音特征的皮质跟踪：(1)单词开始，(2)每个单词相对于前一个上下文的“语义”不相似性，(3)每个单词的词汇惊讶性，以及(4)整体单词可听性。我们的研究结果显示了对出席演讲的所有特征的稳健跟踪，惊讶和单词可听性对神经活动的贡献明显大于不相似。此外，老年人对单词水平特征的追踪明显强于年轻人，尤其是额叶电极部位，这可能反映了他们在听力方面付出的努力。最后，神经行为分析揭示了主观语音噪声感知困难与出席演讲模型拟合优度之间的负相关趋势，以及任务绩效与拟合优度之间的正相关趋势，表明这些测量的行为相关性。总之，我们的研究结果证明了利用复杂的词级特征对多语者语音的皮层反应建模的实用性，以及它们在研究衰老和听力损失导致的语音处理变化方面的潜力。
Speech-in-noise comprehension difficulties are common among the elderly population, yet traditional objective measures of speech perception are largely insensitive to this deficit, particularly in the absence of clinical hearing loss. In recent years, a growing body of research in young normal-hearing adults has demonstrated that high-level features related to speech semantics and lexical predictability elicit strong centro-parietal negativity in the EEG signal around 400 ms following the word onset. Here we investigate effects of age on cortical tracking of these word-level features within a two-talker speech mixture, and their relationship with self-reported difficulties with speech-in-noise understanding. While undergoing EEG recordings, younger and older adult participants listened to a continuous narrative story in the presence of a distractor story. We then utilized forward encoding models to estimate cortical tracking of four speech features: (1) word onsets, (2) “semantic” dissimilarity of each word relative to the preceding context, (3) lexical surprisal for each word, and (4) overall word audibility. Our results revealed robust tracking of all features for attended speech, with surprisal and word audibility showing significantly stronger contributions to neural activity than dissimilarity. Additionally, older adults exhibited significantly stronger tracking of word-level features than younger adults, especially over frontal electrode sites, potentially reflecting increased listening effort. Finally, neuro-behavioral analyses revealed trends of a negative relationship between subjective speech-in-noise perception difficulties and the model goodness-of-fit for attended speech, as well as a positive relationship between task performance and the goodness-of-fit, indicating behavioral relevance of these measures. Together, our results demonstrate the utility of modeling cortical responses to multi-talker speech using complex, word-level features and the potential for their use to study changes in speech processing due to aging and hearing loss.
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语言背景下的单词识别：年龄，听力敏锐度，言语能力和认知功能的影响。
影响因子：
3.7
作者：
Benichov J;Cox LC;Tun PA;Wingfield A
通讯作者：
Wingfield A
影响因子：
3.7
作者：
Amichetti, Nicole M.;Atagi, Eriko;Wingfield, Arthur
通讯作者：
Wingfield, Arthur
影响因子：
5.7
作者：
Dalton, DS;Cruickshanks, KJ;Nondahl, DM
通讯作者：
Nondahl, DM
DOI：
10.1111/j.2517-6161.1995.tb02031.x
发表时间：
1995-01-01
影响因子：
5.8
作者：
BENJAMINI, Y;HOCHBERG, Y
通讯作者：
HOCHBERG, Y
影响因子：
5.7
作者：
Fiedler, Lorenz;Woestmann, Malte;Obleser, Jonas
通讯作者：
Obleser, Jonas