儿童和青少年的智力能力和皮质同型的发展
1State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, China.
Developmental cognitive neuroscience
|July 15, 2025
概括
通过同位素功能亲和度 (HFA) 测量的大脑连接性,随着年龄的增长而下降,特别是在更高阶网络中. 这种神经专业化与智力相关,特别是在青少年中,这表明高度发达的大脑的效率提高.
科学领域:
- 神经科学是一个神经科学.
- 发展心理学 发展心理学
- 认知科学 认知科学
背景情况:
- 功能性同位素,即同源大脑区域之间的相似性,对于半球间通信和认知融合至关重要.
- 大脑发育涉及从童年时的扩散网络转向青春期的专业配置,以增加半球分化和整合为标志.
研究的目的:
- 用一种新型的度量,即同位素功能亲和力 (HFA) 来研究功能性同位素的发展轨迹.
- 在整个发展过程中检查功能性同位素和智力之间的关系.
- 阐明认知发展和半球专业化背后的神经机制.
主要方法:
- 从发育队列收集纵向数据.
- 应用一种新型指标,同位素功能亲和力 (HFA),以量化半球间的功能相似性.
- 相关性分析以评估不同年龄组的HFA和智力之间的关系.
主要成果:
- 观察到与年龄相关的HFA显著下降,特别是在更高阶的协会网络中.
- 与年轻儿童相比,青少年在HFA和智力之间表现出更强烈,主要是负相关性.
- 智力较高的个体显示HFA的加速下降,这表明通过增强的半球专业化,神经效率更高.
结论:
- 功能性同位素随着年龄的增长而减少,这反映了认知发育过程中半球专业化增加.
- 青少年中HFA和智力之间的反向关系表明,神经效率与半球之间更大的差异化有关.
- 这些发现强调了大脑组织和智力能力之间的动态相互作用,这对教育和临床干预有意义.
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