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相关概念视频

Neuroplasticity01:01

Neuroplasticity

Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.

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相关实验视频

Updated: Jun 20, 2026

Whole-Brain 3D Activation and Functional Connectivity Mapping in Mice using Transcranial Functional Ultrasound Imaging
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在老鼠,和人类大脑中,fMRI网络动态在进化过程中得到保存.

Daniel Gutierrez-Barragan1, Julian S B Ramirez2, Stefano Panzeri3

  • 1Functional Neuroimaging Lab, Istituto Italiano di Tecnologia, Center for Neuroscience and Cognitive Systems, Rovereto, Italy.

Nature communications
|October 1, 2024
PubMed
概括

大脑网络动态在哺乳动物中惊人相似. 研究人员在,人类和动物中发现了保守的协同激活模式 (C模式),揭示了大脑组织的共同原则.

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相关实验视频

Last Updated: Jun 20, 2026

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科学领域:

  • 神经科学是一个神经科学.
  • 比较生物学的比较生物学
  • 系统神经科学 系统神经科学

背景情况:

  • 休息状态功能磁共振成像 (fMRI) 研究已经通过时间平均分析确定了具有进化意义的脑网络.
  • 然而,fMRI网络活动的动态,秒速的演变及其跨物种的保护仍然在很大程度上未被探索.

研究的目的:

  • 调查休息状态fMRI网络活动的动态组织是否在哺乳动物物种中得到保护.
  • 为了确定统一的动态原则,管理大脑网络组织在整个族系.

主要方法:

  • 应用框架智能集群到从清醒的雄性和人类的fMRI时间序列数据.
  • 分析了内在fMRI联合激活模式 (C模式) 之间的动态转换.
  • 对比C模式的动态特征和神经解剖学同质性,跨物种,包括动物.

主要成果:

  • 在和人类中确定了4种主导的,神经解剖学上同类的fMRI联合激活模式 (C模式),在动物中可能存在3种.
  • 观察到C模式的物种不变动态特征,包括在特定的全球信号波动阶段的偏好发生和红外低合振荡器动态.
  • 证明主导的C模式发生重建了静态fMRI连接组组织,并预测了跨物种的连接度梯度排名.

结论:

  • 揭示了一组规范哺乳动物fMRI网络动态组织的物种不变原则.
  • 建立了一个框架,通过专注于动态组织,将fMRI网络的发现与哺乳动物的遗传树联系起来.