在神经面部感知网络中的半球间集成:刺激位置是否重要?
Julia Elina Stocker1, Antonia Schulz1, Ina Thome1
1Department of Psychiatry and Psychotherapy, University of Marburg, Marburg, Germany.
Imaging neuroscience (Cambridge, Mass.)
|August 13, 2025
概括
刺激的位置会影响面部感知过程中的大脑连接. 与中央呈现相比,外围面部呈现导致不同的神经网络模式,影响半球间传输.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 神经成像是一种神经成像.
背景情况:
- 半球横向化研究经常使用外围刺激,可能与中央处理不同.
- 了解半球间集成需要适用于典型的叶加工的模型.
研究的目的:
- 研究刺激位置 (边缘与中心) 在面部感知过程中如何影响神经网络连接.
- 用fMRI和DCM比较外围和中央面部刺激的半球间传递机制.
主要方法:
- 在17名健康志愿者身上进行功能磁共振成像 (fMRI),观察外围或中心的面部和物体图像.
- 动态因果建模 (DCM) 分析神经网络连接和半球间传输.
- 贝叶斯模型平均化 (BMA) 用于整合五种连接模型中的参数.
主要成果:
- 确定了双边面部敏感区域 (FFA,OFA) 和V1.
- 与中央刺激相比,外围面部刺激诱导了明显不同的半球间传输模式.
- 对于左侧和右侧视野呈现,观察到不对称的连接模式.
结论:
- 刺激位置在面部处理中关键调节神经网络连接.
- 外围和中央的面部呈现激活了不同的处理路径.
- 中央刺激处理与典型的面部感知网络更加紧密地结合在一起.
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