与年龄相关的听力损失的个体的视觉选择性注意力
Min Zhu1, Yufei Qiao1, Wen Sun1
1Department of Otorhinolaryngology, Peking Union Medical College Hospital, Beijing, People's Republic of China.
NeuroImage
|August 15, 2024
概括
与年龄相关的听力损失 (ARHL) 可能会损害视觉注意力系统,即使没有听觉任务. 这项研究发现,ARHL个体的视觉注意力神经标志物减少,这表明听力和认知能力下降之间存在联系.
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:
- 流行病学研究将听力损失与认知能力下降联系起来,但机制尚不清楚.
- 听力任务表明退化输入增加了认知负载,可能会影响其他认知功能.
- 注意网络可能参与其中,但它们在没有听觉需求的情况下的功能尚未得到充分理解.
研究的目的:
- 研究与年龄相关的听力损失 (ARHL) 患者的视觉注意力处理.
- 探索ARHL潜在注意力缺陷的神经生理基础.
- 在ARHL中检查听力敏度和视觉注意力之间的关系.
主要方法:
- 使用视觉注意力选择任务进行脑电图 (EEG) 研究.
- 将30名ARHL (60-73岁) 个体与年龄相匹配的 (N=30,60-70岁) 和年轻的 (N=35,22-29岁) 正常听力对照进行了比较.
- 测量后部逆侧N2元件振幅和目标引起的α横向化.
主要成果:
- 与对照组相比,ARHL个体的后侧逆侧N2组分幅度降低,尽管行为表现相似.
- 在老年人中,N2pc振幅减小与纯音声听力测量值和语音噪声能力相关.
- 在对照组中,ARHL个体没有表现出目标诱导的α横向化.
结论:
- 在ARHL中减少的N2pc振幅表明视觉注意力缺陷,即使没有增加的听觉处理负载.
- 研究结果支持这样一个假设:慢性降低的听觉输入对认知控制系统产生不利影响.
- 这可能代表了一种机制,将与年龄相关的听力损失与加速认知衰退联系在一起.
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