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Updated: Jun 21, 2026

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人体腹腔时皮层功能横向化的个体变化:局部竞争和远程合

Nicholas M Blauch^1,2, David C Plaut^1,3, Raina Vin^1,4

¹Neuroscience Institute, Carnegie Mellon University, Pittsburgh, PA, United States.

Imaging neuroscience (Cambridge, Mass.)

|March 13, 2025

概括

腹腔皮层 (VTC) 组织揭示了通用的局部相互作用,形成了面部感知侧面化,而不是直接的面对面竞争. 与社会处理的长距离合也会影响后叶的面部横向性.

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
人类大脑成像技术

背景情况:

腹腔皮质 (VTC) 对于高水平视觉至关重要,表现为文字和面部处理的功能横向化.
文字处理通常是左侧化,而面处理是右侧化,侧面性指数 (LI) 量化这一点.
推动面部横向化在VTC中的确切机制,特别是当地竞争和远程连接的作用,仍在争论中.

研究的目的:

调查VTC功能横向化的潜在机制,特别是测试文字和面部处理的局部竞争和远程合理论.
要区分特定的面对面竞争和影响VTC组织的更一般的本地代表性互动.
检查与语言和社会处理区域的远程连接对VTC横向化模式的影响.

主要方法:

在内部实验中利用功能性MRI (fMRI) 来测量神经反应,并计算单词和面部选择性的横向性指数 (LI).
分析了大规模的人类结合体项目 (HCP) 数据集,以检查不同参与者的更广泛的本地LI相互作用和远程合效应.
与不同类别 (词,面孔,工具,身体) 的VTC反应的相关LI以及与参与语言和社会处理的其他大脑区域的LI相关联.

主要成果:

没有证据表明文字和面部表示之间的局部竞争导致VTC横向化;文字和面部LI之间的相关性并不总是负面的.
发现了通用局部相互作用的证据:面部和工具LIs是反相关的,而面部和身体LIs是正相关的.
证明了显著的长距离合:VTC text LI与其他文字处理区域呈正相关性,而VTC face LI与语言和社会处理区域呈明显的负和正相关性.

结论:

包括面部感知在内的VTC侧面化是由一般的本地代表性竞争和合作而不是特定的面对面竞争所塑造的.
远距离合起着重要作用,面部横向化受到后叶社会处理区域的相互作用的影响.
这些发现表明,局部和远程网络动态的复杂相互作用在人类腹腔皮层内组织专门的视觉处理.

关键词:

皮层的竞争皮层的竞争面部处理是面部处理.高层次的视觉视觉 - 高层次的视觉视觉个体变化的个体变化.横向化 (lateralization) 是一种侧向化.腹腔皮层的时间皮层.

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