视觉皮层侧向化在激活和功能连接的视觉面孔,场景,身体部位和工具的视力
Edmund T Rolls1,2, Jianfeng Feng1, Ruohan Zhang3
1Department of Computer Science, University of Warwick, Coventry, UK.
Human brain mapping
|March 10, 2026
概括
这项研究揭示了833名参与者对视觉刺激的独特大脑半球专业化. 空间场景更多地激活了右半球,而面孔和工具激活了左半球,展示了功能性大脑横向化.
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
- 脑部成像 脑部成像
背景情况:
- 了解大脑侧向化对于认知功能至关重要.
- 之前的研究表明,不同刺激的半球专业化,但详细的映射正在进行中.
- 人类结合体项目 (HCP) 为此类调查提供了丰富的多式联络数据.
研究的目的:
- 为了研究皮质激活和功能连接的横向化,以应对各种视觉刺激.
- 绘制特定的大脑区域和参与处理场景,面部,身体部位和工具的网络的地图.
- 探索刺激独立的横向化模式及其与语言等既定功能的关系.
主要方法:
- 功能性磁共振成像 (fMRI) 数据的分析从833右撇子参与者在HCP.
- 使用HCP-Multimodal Parcellation图谱进行详细的皮质绘图.
- 在不同视觉刺激中检查了区域激活和功能连接模式.
主要成果:
- 空间场景显示出更强的右半球激活,特别是在腹中视觉流和下等体区域.
- 面部,工具和身体部位引起了较强的左半球激活在腹侧和上突 (STS) 区域.
- 与语言相关的语义区域和早期视觉区域 (V2-V4,POS1) 呈现出独立于刺激类型的一致横向化 (分别是左侧和右侧).
结论:
- 这些发现表明,对于处理不同视觉类别的半球显著专业化.
- 功能连接在很大程度上反映了激活模式,突出了协调的网络横向化.
- 这项研究提供了关于大脑皮层的计算单元及其横向组织的见解.
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