...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The European Journal of Neuroscience >Neural correlates of visual stimulus encoding and verbal working memory differ between cochlear implant users and normal-hearing controls
【24h】

Neural correlates of visual stimulus encoding and verbal working memory differ between cochlear implant users and normal-hearing controls

机译：视觉刺激编码和口头工作记忆的神经相关性与耳蜗植入用户和正常听力控制之间的不同

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A common concern for individuals with severe-to-profound hearing loss fitted with cochlear implants (CIs) is difficulty following conversations in noisy environments. Recent work has suggested that these difficulties are related to individual differences in brain function, including verbal working memory and the degree of cross-modal reorganization of auditory areas for visual processing. However, the neural basis for these relationships is not fully understood. Here, we investigated neural correlates of visual verbal working memory and sensory plasticity in 14 CI users and age-matched normal-hearing (NH) controls. While we recorded the high-density electroencephalogram (EEG), participants completed a modified Sternberg visual working memory task where sets of letters and numbers were presented visually and then recalled at a later time. Results suggested that CI users had comparable behavioural working memory performance compared with NH. However, CI users had more pronounced neural activity during visual stimulus encoding, including stronger visual-evoked activity in auditory and visual cortices, larger modulations of neural oscillations and increased frontotemporal connectivity. In contrast, during memory retention of the characters, CI users had descriptively weaker neural oscillations and significantly lower frontotemporal connectivity. We interpret the differences in neural correlates of visual stimulus processing in CI users through the lens of cross-modal and intramodal plasticity.
机译：对于安装了人工耳蜗（CIs）的重度至重度听力损失患者来说，一个常见的问题是难以在嘈杂的环境中进行对话。最近的研究表明，这些困难与大脑功能的个体差异有关，包括语言工作记忆和视觉加工听觉区域的跨模态重组程度。然而，这些关系的神经基础尚不完全清楚。在这里，我们研究了14名CI使用者和年龄匹配的正常听力（NH）对照者的视觉-言语工作记忆和感觉可塑性的神经相关性。在我们记录高密度脑电图（EEG）的同时，参与者完成了一项改进的斯特恩伯格视觉工作记忆任务，在该任务中，一组字母和数字以视觉方式呈现，然后在稍后回忆。结果表明，CI使用者的行为工作记忆表现与NH相当。然而，CI使用者在视觉刺激编码过程中有更明显的神经活动，包括听觉和视觉皮质中更强的视觉诱发活动、更大的神经振荡调制和额颞叶连接性增加。相比之下，在角色记忆保留期间，CI用户的神经振荡较弱，额颞叶连接性显著降低。我们通过跨模态和模态内可塑性来解释CI用户视觉刺激处理的神经相关性差异。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号