人类新皮质的功能层次从摇篮到坟墓
Hoyt Patrick Taylor1,2,3, Khoi Minh Huynh2,3, Kim-Han Thung2,3
1Department of Computer Science, University of North Carolina, Chapel Hill, U.S.A.
bioRxiv : the preprint server for biology
|June 25, 2024
概括
人类大脑连接梯度从出生到成年期成熟,在成年早期达到顶峰,然后下降. 这项研究在整个生命周期中绘制了这些功能连接变化的图表,揭示了关键的发育模式.
科学领域:
- 神经科学是一个神经科学.
- 发育神经科学的发展神经科学.
- 认知神经科学 认知神经科学
背景情况:
- 人类新皮层组织依赖于功能连接 (FC) 梯度.
- 这些梯度将大脑地形与认知功能联系起来.
- FC梯度的寿命发展仍然在很大程度上未被绘制.
研究的目的:
- 模拟人类一生中三个主要的FC梯度的发育轨迹.
- 为全球FC层次架构建立一个规范性参考.
- 研究在发育和老化过程中的结构-功能合.
主要方法:
- 使用了大量,高质量的,时间密集的功能性MRI数据集 (出生至100岁).
- 模拟的发展轨迹的感官运动协会 (SA),视觉-体感官 (VS) 和调制-表示 (MR) 的梯度.
- 分析了全球网络特征和结构功能合的与年龄相关的变化.
主要成果:
- 层次组织的全球标志物从出生到早期成年期增加,然后减少.
- 婴儿/幼儿时期表现出感官处理优势和短距离连接.
- 童年后期到成年早期涉及功能差异化,长距离合和SA/MR等级精细化.
- 梯度地形在成年后期/衰老时是稳定的,但从30-100岁开始,FC差异化和复杂性会减少.
- 结构功能梯度合显示了差异寿命轨迹.
结论:
- 提供了FC等级架构的第一个全面的寿命参考.
- 揭示了从婴儿期到老龄化的大脑网络组织的不同发展阶段.
- 突出了整个生命过程中功能和结构梯度之间的动态相互作用.
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