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, Mia Jimenez2, Hannah L Stone3
1Graduate School of Education, Stanford University, Stanford, CA, USA; Department of Psychology, Stanford University, Stanford, CA, USA.
Developmental cognitive neuroscience
|March 6, 2026
概括
阅读的视觉文字形式区域 (VWFA) 始终位于个体中,但其精确的大小各不相同. 个体之间的平均值掩盖了这一区域,这是由于腹腔尾皮皮层 (VOTC) 的解剖学变异性.
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
- 视觉感知 视觉感知 视觉感知
背景情况:
- 腹角角皮层 (VOTC) 对视觉刺激表现出分类功能专业化.
- 视觉文字形式区域 (VWFA) 对于阅读至关重要,位于左侧的VOTC,但在尺寸和精确位置上显示出显著的个体变化.
- 关于VWFA主要是处理文本的视觉特征还是由阅读任务驱动的,目前仍存在争论.
研究的目的:
- 调查VWFA位置在个人和任务之间的一致性.
- 确定不同任务对文本选择性响应范围的影响.
- 检查个体解剖学变异性对在模板空间中识别文本选择性皮层的影响.
主要方法:
- 功能磁共振成像 (fMRI) 用于扫描成人和儿童.
- 参与者在两个条件下查看文本,伪字体,面孔,物体和四肢:固定任务和单背任务.
- 兴趣区域 (ROI) 分析是在单个皮质表面和模板空间中进行的.
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 (ROI).
- 模板空间中的平均值数据掩盖了文本选择性皮质,这是由于类别选择性区域的排列在个人之间具有很高的变化.
- 这些发现在整个发育阶段都是一致的.
结论:
- 个别的VWFA位置是任务不可知的,但任务需求会影响激活区域的范围.
- 在VOTC类别选择性区域的高解剖变异性阻止了在平均模板空间中可靠地识别VWFA.
- 了解个体的变化对于研究阅读及其发展的神经基础至关重要.
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