Early adversity changes the economic conditions of mouse structural brain network organization.

Early adversity changes the economic conditions of mouse structural brain network organization.
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DOI:
10.1002/dev.22405
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发表时间:
2023-09
影响因子:
2.2
通讯作者:
--
中科院分区:
心理学4区
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--
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早期逆境可以改变教育,认知和心理健康结果。然而,早期逆境发挥这些作用的神经过程在很大程度上仍然未知。我们使用小鼠连接体的生成网络建模来测试不可预测的产后压力是否会改变控制结构连接体组织的约束。一个模型,权衡布线成本的长途连接与拓扑同质性(即,具有共享邻居的区域之间的链接)生成成功复制啮齿动物连接体的模拟。早期生活逆境的施加将表现最好的参数组合移向零,增强了生成过程的随机性。简而言之,不可预测的产后压力改变了复制啮齿动物连接体组织的经济约束,为模拟的发展带来了更大的随机性。虽然这种变化可能会限制认知能力的发展,但它也可能反映出一种适应机制,有助于有效应对未来的挑战。
Early adversity can change educational, cognitive, and mental health outcomes. However, the neural processes through which early adversity exerts these effects remain largely unknown. We used generative network modeling of the mouse connectome to test whether unpredictable postnatal stress shifts the constraints that govern the organization of the structural connectome. A model that trades off the wiring cost of long-distance connections with topological homophily (i.e., links between regions with shared neighbors) generated simulations that successfully replicate the rodent connectome. The imposition of early life adversity shifted the best-performing parameter combinations toward zero, heightening the stochastic nature of the generative process. Put simply, unpredictable postnatal stress changes the economic constraints that reproduce rodent connectome organization, introducing greater randomness into the development of the simulations. While this change may constrain the development of cognitive abilities, it could also reflect an adaptive mechanism that facilitates effective responses to future challenges.
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