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早期的语言体验和模式影响不同半球的头顶皮层激活:从听到双模双语者的见解
A Banaszkiewicz1, B Costello2, A Marchewka3
1Laboratory of Brain Imaging, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland; Laboratory of Language Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
Neuropsychologia
|August 16, 2024
概括
学习年龄 (AoA) 显著影响大脑对手语的表现. 与晚期标记者相比,本地标记者在右下侧叶 (IPL) 中显示出明显的神经模式,突出显示AoA.
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
- 双语研究 双语研究
背景情况:
- 获取年龄 (AoA) 对语言发展至关重要.
- 了解AoA如何影响双语者,特别是手语者的大脑组织是关键.
- 听力双模双语者提供了一个独特的模型来研究语言处理.
研究的目的:
- 调查AoA对手语功能性大脑表现的影响.
- 比较本地 (早期) 和晚期 (青春期后) 的签名者.
- 检查AoA的影响是否在手语和口语之间有所不同.
主要方法:
- 招募了两组听力双模双语者:母语和晚期标志者.
- 通过使用专业测试,对高水平的手语能力进行控制.
- 利用神经成像技术分析语言处理期间的大脑活动.
主要成果:
- 在右下叶 (IPL) 中发现了显著的AoA效应,与原生签名者显示的激活模式不同于迟签名者.
- 在这两组中,与口语相比,手势语言的左侧IPL参与度更大,这表明了模式效应.
- 语言的神经支是由语言特征和学习时间决定的.
结论:
- AoA调节了手势语言的神经表达.
- 语言模式影响大脑激活,不论是AoA.
- 语言学习的时间是塑造大脑语言网络的关键因素.
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