半球功能连接的增加补偿了老年人听力损失的语音感知
Yi Liu1, Junhua Ding2, Songjian Wang1
1Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, China.
Brain research
|February 9, 2026
概括
与年龄相关的听力损失 (ARHL) 会导致大脑变化,这取决于听力损失的严重程度和认知状态. 早期的听力损失表明适应性大脑连接,但严重的损失可能表明神经功能崩.
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
- 认知神经科学 认知神经科学
背景情况:
- 与年龄相关的听力损失 (ARHL) 与大脑显著重组有关.
- 了解ARHL在不同阶段和大脑状态中的功能连接 (FC) 变化至关重要.
研究的目的:
- 研究老年人不同程度听力损失的休息状态和语音感知引起的FC.
- 确定FC变化如何取决于听力损失和认知状态的阶段.
主要方法:
- 功能近红外光谱学 (fNIRS) 用于测量大脑活动.
- 在有正常听力,轻度听力损失和中度至重度听力损失的老年人中检查了FC.
- 分析包括休息状态和基于任务 (语音感知) 的条件.
主要成果:
- 功能连接 (FC) 的变化既取决于状态,也取决于阶段.
- 轻度听力损失在语音感知过程中显示出增强的跨半球FC,这表明适应性招募.
- 严重的听力损失缺乏这些增强,表明适应机制的潜在破坏和神经通路的改变.
结论:
- 在ARHL中神经适应遵循非线性轨迹.
- 在听力损失的早期阶段,神经可塑性的窗口有限.
- 跨半球重组对于维护语音处理至关重要,特别是在认知负载下.
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