支持人工语法学习的大脑区域的功能重组在生命的前半年
Lin Cai1,2, Takeshi Arimitsu3, Naomi Shinohara3
1Department of Electronics and Electrical Engineering, Keio University, Yokohama, Japan.
PLoS biology
|October 22, 2024
概括
新生儿和婴儿可以检测到对语言至关重要的听觉模式. 脑部成像显示出一个正在发展的左半球网络,从出生开始支持这种能力,为语言学习奠定了基础.
科学领域:
- 神经科学是一个神经科学.
- 发展心理学 发展心理学
- 语言学的语言学.
背景情况:
- 之前的婴儿表现出在听觉刺激中追踪非相邻依赖 (NADs) 的能力.
- 这种听觉处理技能被认为是成功获得语言的基本前提.
- 这种早期能力背后的特定神经发育机制在很大程度上仍未被描述.
研究的目的:
- 研究支持婴儿非相邻依赖 (NAD) 学习和检测的神经基质.
- 探索参与听觉处理和语言先决条件的大脑网络的发展轨迹.
- 识别功能性大脑网络的出现,支持从出生开始的NAD检测.
主要方法:
- 利用功能近红外光谱 (fNIRS) 来测量新生儿和6至7个月大的婴儿的大脑活动.
- 采用人工语法学习范式,使用语音序列来评估NAD学习和检测.
- 进行功能连接分析,以检查不同任务阶段的网络交互.
主要成果:
- 新生儿在NAD检测期间显示左前额叶皮层激活.
- 6至7个月大的婴儿表现出左侧上边脊椎 (SMG),上脊椎 (STG) 和下额头脊椎的激活.
- 功能连接表明左半球网络涉及前额区域,左SMG和STG支持新生儿NAD检测.
结论:
- 一个与左半球学习相关的功能性大脑网络似乎在出生时出现.
- 这个早期网络可能为后来的NAD检测提供了基础的神经基础.
- 这些发现为语言学习的神经发育起源提供了关键的见解.
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