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跨语言干扰解决的脑动态在西班牙语-英语双语的人与或没有失语症
Katherine Diane Andrade1, Henrike K Blumenfeld2, Stéphanie Kathleen Riès2
1Joint Doctoral Program in Language and Communicative Disorders, San Diego State University/University of California San Diego, La Jolla, CA, USA.
双语失语的人很难解决跨语言干扰,与对照人不同. 这表明,通常用于管理语言之间的干扰的中枢前额皮层机制中出现了干扰.
科学领域:
- 神经科学是一个神经科学.
- 心理语言学 心理语言学
- 认知科学 认知科学
背景情况:
- 双语者在文字检索时同时激活两种语言.
- 虚假的亲属会诱导跨语言干扰,这对双语失语者来说可能是一个挑战.
- 双语失语症中干扰解决的基础神经机制尚不清楚.
研究的目的:
- 为了研究双语失语者的跨语言干扰解决的神经动力学.
- 为了比较双语失语者与年龄相匹配的对照者之间的干扰解决过程.
主要方法:
- 头皮脑电图 (EEG) 用于记录大脑活动.
- 参与者包括21个年龄相匹配的对照和5个双语的失语患者.
- 任务包括一个图片词干扰范式和一个非语言空间Stroop任务.
主要成果:
- 与对照人群相比,双语失语者表现较低.
- 在两组中都观察到交叉语言干扰.
- 在对照组中存在的中间前脑电图元件 (大约400毫秒) 在语言任务期间缺失了双语失语的人.
结论:
- 双语者通常利用中间额叶皮质来解决跨语言干扰.
- 这种神经机制在双语失语者中似乎被破坏了,这影响了他们处理干扰的能力.
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