语音处理网络在语后和语前聋内耳植入物使用者的特点
Younuo Chen1, Songjian Wang1, Liu Yang2
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 100005, China.
Cerebral cortex (New York, N.Y. : 1991)
|January 1, 2024
概括
耳植入物在语言前和语言后使用者中以不同的方式重组语音处理的大脑网络. 尽管听觉激活率较低,但耳植入物用户仍然保持高效的语音处理网络.
科学领域:
- 神经科学是一个神经科学.
- 听觉神经科学 听觉神经科学
- 语音处理 语音处理
背景情况:
- 听力损失改变了大脑的结构和功能.
- 通过耳植入器 (CI) 恢复听力可以导致皮质重组.
- 功能重组模式在后语言和前语言CI用户之间有所不同,但底层机制尚不清楚.
研究的目的:
- 研究语言学习和听力恢复对语音感知的影响.
- 在耳植入后探索语音处理网络中的皮层重组.
- 为了比较脑活性,功能连接和网络属性在语后CI用户,语前CI用户和听力控制 (HC) 中.
主要方法:
- 功能近红外光谱学 (fNIRS) 用于评估大脑活动和连接性.
- 语音噪音刺激向三个组呈现:语后CI用户 (n=12),语前CI用户 (n=10) 和年龄匹配的HC (n=22).
- 应用图形理论分析来检查语音处理网络的网络属性.
主要成果:
- 与HC相比,耳植入物使用者在与听觉相关的区域的激活率较低.
- 在语音处理网络的网络属性中,在语后和语前CI用户之间观察到显著的差异,特别是在Wernicke和Broca的区域.
- 尽管激活模式发生了变化,但CI用户在处理语音信息方面表现出高的网络效率.
结论:
- 这项研究描述了语音处理网络在不同的噪音环境中的特征,用于语后和语前CI用户.
- 结果提供了关于不同耳植入时间如何影响功能语音处理网络重塑的见解.
- 这些发现突出了基于听力损失发病和恢复年龄的不同神经重组策略.
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