大脑潜力和功能性MRI证据表明,如何用一个大脑处理两种语言
Antoni Rodriguez-Fornells1, Michael Rotte, Hans-Jochen Heinze
1Department of Neuropsychology, Otto von Guericke University, Universitätsplatz 2, Gebäude 24, 39106 Magdeburg, Germany.
Nature
|March 5, 2002
概括
双语者通过早期拒绝非目标单词,在访问其含义之前,来防止语言干扰. 这种早期拒绝机制有助于有效地处理目标语言.
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:
- 双语人士需要有效的认知策略来管理语言之间的干扰.
- 了解语言选择的神经机制对于认知神经科学至关重要.
研究的目的:
- 调查非目标语言单词在双语中被抑制的阶段.
- 阐明双语者语言干扰管理背后的神经过程.
主要方法:
- 利用事件相关的大脑潜力 (ERP) 和功能磁共振成像 (fMRI).
- 使用双语西班牙语/加泰罗尼亚语和单语西班牙语参与者的语言选择任务.
- 监控大脑对目标词,非目标词和伪词的反应.
主要成果:
- 双语者很早就会拒绝非目标语言的单词,而不是先进行语义分析.
- 非目标词的频率没有影响双语者的大脑潜力,这表明意义没有被访问.
- fMRI显示了语音和伪文字处理区域的激活,这表明间接的词汇访问路线.
结论:
- 双语者使用早期的抑制机制来防止非目标语言的干扰.
- 双语者利用间接的语音路线进入词典,以访问目标语言,避免语义干扰.
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