儿科头腔切除后神经视觉识别系统的功能弹性
Michael C Granovetter1,2,3, Anne Margarette S Maallo1, Shouyu Ling4
1Department of Psychology and Neuroscience Institute, Carnegie Mellon University, Pittsburgh, PA 15213, USA.
iScience
|December 30, 2024
概括
在典型的视觉识别中,双边的角角皮层 (OTC) 是至关重要的. 即使有神经弹性,小儿切除后的单个OTC对于正常的面部和物体识别能力是不够的.
科学领域:
- 神经科学是一个神经科学.
- 发育神经科学的发展神经科学.
- 认知神经科学 认知神经科学
背景情况:
- 视觉刺激的神经表现通常是双边的,穿过皮质 (OTC).
- 儿科单边OTC切除提供了一个独特的模型,用于研究单一半球的视觉表征发育.
研究的目的:
- 调查一个单一的OTC是否能够足够地开发用于切除后视觉刺激个体化的表征.
- 为了比较类别选择性 (CS) 和重复抑制 (RS) 对面孔,物体和词在患者和没有OTC切除与健康对照.
主要方法:
- 功能性磁共振成像 (fMRI) 用于绘制儿童患者单边OTC切除和健康对照的非切除半球中的CS和RS.
- 参与者包括在 (n=9) 和外 (n=12) OTC内切除的患者和21名健康对照.
主要成果:
- 在类别选择性或重复抑制方面没有观察到显著的群体差异.
- 与对照组相比,经过OTC切除的患者在识别面孔和物体方面表现出较低的准确性,但不是单词.
- 神经成像显示,在受损后的剩余OTC中,神经复原力.
结论:
- 一个单独的头后皮质 (OTC) 对于典型的视觉识别是不够的,特别是对于面孔和物体.
- 双边OTC贡献对于强大的视觉识别是必要的.
- 这些发现强调了双边大脑结构对于复杂的认知功能的重要性.
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