在噪音中的语音感知过程中,对双路口语音处理网络的衰老效应
Songjian Wang1, Younuo Chen1, Yi Liu1
1Beijing Institute of Otolaryngology, Otolaryngology-Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Human brain mapping
|January 15, 2024
概括
老年人在噪音中表现出语音感知下降,但在噪音中招募更多的大脑资源,特别是在韦尔尼克.
科学领域:
- 神经科学是一个神经科学.
- 认知老龄化 认知老龄化
- 语音处理 语音处理
背景情况:
- 健康的衰老会改变语音处理网络,尤其是在杂的环境中.
- 在衰老过程中,双路神经网络中的补偿机制尚不清楚.
- 之前的研究表明,在背部和腹部流中增加了大脑活动,以抵消外周衰退.
研究的目的:
- 调查与健康衰老有关的双路功能连接的补偿机制.
- 检查不同信号噪声比率 (SNR) 的语音感知如何受到年龄的影响.
- 分析语音处理网络的效率和节点特征的与年龄相关的变化.
主要方法:
- 利用功能近红外光谱学 (fNIRS) 来研究功能连接.
- 在不同的SNR中,与健康的年轻人,中年人和老年人一起使用语音感知任务.
- 应用图形理论网络分析来评估网络效率和节点特征.
主要成果:
- 语音感知得分随着年龄的增长而显著下降,因为SNR减少.
- 随着年龄的增长,韦尼克区域与其同类之间的功能连接性增加了.
- 网络效率随着年龄的增长而增加,在噪声下维尼克的区域及其对应物中,与年龄相关的显著差异.
结论:
- 韦尼克区域作为一个关键的枢纽,在健康的老龄化过程中保持语音处理网络的效率.
- 年长的成年人招募同源的韦尼克区域资源,以补偿在杂的环境中语音解码.
- 这些发现为老龄化对双路口语音处理网络调节的补偿理论提供了新的见解.
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