从视觉过渡到语言:视觉词形区域的子区域的功能连接的独特模式
Maya Yablonski1,2, Iliana I Karipidis3,4,5, Emily Kubota6
1Division of Developmental-Behavioral Pediatrics, Department of Pediatrics, Stanford University School of Medicine, Stanford, California, USA.
Human brain mapping
|March 15, 2024
概括
视觉文字形式区域 (VWFA) 有两个子区域:VWFA-1连接到视觉区域,而VWFA-2连接到语言网络. 这些独特的功能连接支持不同技能水平的阅读过程.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 脑部成像 脑部成像
背景情况:
- 阅读涉及到专门的大脑区域,包括视觉皮层中的视觉词形区域 (VWFA).
- 拟议VWFA具有子区域:视觉特征的VWFA-1 (后部) 和高级语言的VWFA-2 (前部).
- 了解这些子区域的功能连接对于理解阅读电路至关重要.
研究的目的:
- 调查VWFA-1和VWFA-2的不同功能连接模式.
- 确定这些模式是否不同,与语言和视觉处理有关.
- 检查这些连接模式在成人和发育人口和他们的关系阅读能力.
主要方法:
- 利用了两个数据集:自然景观数据集 (NSD) 具有高质量的成人fMRI数据,以及健康大脑网络 (HBN) 数据库,具有大型发育样本.
- 识别了文字选择性响应,并分析了VWFA-1和VWFA-2在个人层面上的功能连接性.
- 比较VWFA分区域之间的连接模式和相邻的面部选择性区域,并与阅读能力相关联.
主要成果:
- VWFA-1与双边视觉区域有很强的相关性.
- VWFA-2与语言区域的相关性更强,特别是下额头.
- 连接模式是特定于VWFA子区域,并没有将面部选择性区域概括;没有发现与阅读能力的相关性.
结论:
- 这些发现支持基于它们独特的功能连接配置文件,区分VWFA-1和VWFA-2.
- VWFA-2与前置语言网络的连接突出了它在更高层次阅读过程中的作用.
- 与阅读相关的腹腔时皮层的功能连接在一系列阅读技能和发育阶段是强大的.
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