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人类与猕猴在MT+复合体中的连接差异。

Connectional differences between humans and macaques in the MT+ complex.

作者信息

Ruan Jianxiong, Yuan Ye, Qiao Yicheng, Qiu Minghao, Dong Xueda, Cui Yue, Wang Jianhong, Liu Ning

机构信息

School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230026, China.

State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.

出版信息

iScience. 2024 Dec 17;28(1):111617. doi: 10.1016/j.isci.2024.111617. eCollection 2025 Jan 17.

DOI:10.1016/j.isci.2024.111617
PMID:39834863
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11743884/
Abstract

MT+ is pivotal in the dorsal visual stream, encoding tool-use characteristics such as motion speed and direction. Despite its conservation between humans and monkeys, differences in MT+ spatial location and organization may lead to divergent, yet unexplored, connectivity patterns and functional characteristics. Using diffusion tensor imaging, we examined the structural connectivity of MT+ subregions in macaques and humans. We also employed graph-theoretical analyses on the constructed homologous tool-use network to assess their functional roles. Our results revealed location-dependent connectivity in macaques, with MST, MT, and FST predominantly connected to dorsal, middle, and ventral surfaces, respectively. Humans showed similar connectivity across all subregions. Differences in connectivity between MST and FST are more pronounced in macaques. In humans, the entire MT+ region, especially MST, exhibited stronger information transmission capabilities. Our findings suggest that the differences in tool use between humans and macaques may originate earlier than previously thought, particularly within the MT+ region.

摘要

MT+在背侧视觉通路中起关键作用，编码诸如运动速度和方向等工具使用特征。尽管它在人类和猴子之间具有保守性，但MT+空间位置和组织的差异可能导致尚未探索的不同连接模式和功能特征。利用扩散张量成像，我们研究了猕猴和人类MT+亚区域的结构连接性。我们还对构建的同源工具使用网络进行了图论分析，以评估它们的功能作用。我们的结果揭示了猕猴中位置依赖性连接，其中MST、MT和FST分别主要连接到背侧、中间和腹侧表面。人类在所有亚区域都表现出相似的连接性。MST和FST之间的连接差异在猕猴中更为明显。在人类中，整个MT+区域，尤其是MST，表现出更强的信息传递能力。我们的研究结果表明，人类和猕猴在工具使用上的差异可能比之前认为的更早出现，特别是在MT+区域内。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/c65b901fb96f/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/297f617c7672/fx1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/d35a5beb81ac/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/675657070ad5/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/8fbbf89b12a3/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/2af62409b1f9/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/67b87256bb8f/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/c65b901fb96f/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/297f617c7672/fx1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/d35a5beb81ac/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/675657070ad5/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/8fbbf89b12a3/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/2af62409b1f9/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/67b87256bb8f/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/322d/11743884/c65b901fb96f/gr6.jpg

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Multimodal Connectivity-Based Individual Parcellation and Analysis for Humans and Rhesus Monkeys.基于多模态连接的人类和恒河猴的个体分区与分析。
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Connectivity reveals homology between the visual systems of the human and macaque brains.
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