视觉文字形式区域展示了个体和任务不可知的一致性,但跨个体的可变性
Jamie L Mitchell1,2, Mia Fuentes-Jimenez1, Hannah L Stone3
1Graduate School of Education, Stanford University, Stanford, CA, USA.
bioRxiv : the preprint server for biology
|August 8, 2025
概括
大脑中的视觉文字形式区域 (VWFA).
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
- 神经成像是一种神经成像.
背景情况:
- 腹角皮质 (VOTC) 包含专门用于视觉刺激的区域.
- 视觉文字形式区域 (VWFA) 位于左侧的VOTC,是阅读至关重要的文本选择区域.
- 在个人之间,VWFA的确切位置和大小存在变化,并且存在关于它是否处理视觉文本特征或是通过阅读任务驱动的争论.
研究的目的:
- 调查视觉Word表格区域 (VWFA) 的本地化和任务依赖性.
- 为了确定VWFA的响应是否受到认知任务或文本固有的视觉处理的调制.
主要方法:
- 功能磁共振成像 (fMRI) 用于扫描成人和儿童.
- 参与者在查看文本,伪字体,面孔,物体和四肢时执行了两个任务 (固定和一个背面).
- 分析的重点是确定单个皮质表面和模板空间中的文本选择性区域.
主要成果:
- 通过使用任何任务,可以在每个个体的皮质表面上识别出一致的VWFA位置.
- 与固定任务相比,单背任务引起了更大的文字选择性响应区域.
- 模板空间中的平均值数据由于个体间的解剖变异性而掩盖了文本选择性皮质.
结论:
- 在儿童和成人中,VWFA可以在个体的皮质表面可靠地定位.
- 鉴定到的VWFA无论认知任务如何,都始终对文本做出响应.
- 在类别选择性区域的排列中,个体间的变化掩盖了VWFA响应,当数据在模板空间中平均时.
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