新训练的导航和口头记忆技能引发了与任务相关网络的变化,而不是大脑结构的变化
Li Zheng1,2, Zachary Boogaart3, Andrew McAvan1
1Department of Psychology, University of Arizona, 1503 E. University Blvd., Tucson, AZ 85719.
bioRxiv : the preprint server for biology
|August 20, 2025
概括
认知训练并没有改变大脑结构,但在认知控制网络中增强了功能连接. 这表明干预改善了短暂的网络配置,而不是永久的大脑变化.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 神经成像是一种神经成像.
背景情况:
- 获得复杂的认知技能对现实世界有重大影响.
- 了解认知技能获取的神经支柱至关重要.
- 以前的研究还没有完全解决与学习复杂任务相关的大脑变化.
研究的目的:
- 研究强化认知训练对大脑结构和功能的影响.
- 为了确定导航或口头记忆的多周干预是否会诱导持久的神经变化.
- 区分结构性和功能性大脑适应性与认知训练之间的区别.
主要方法:
- 开发并验证了多周的强化认知训练干预 (导航与口头记忆).
- 招募了75名健康的年轻参与者,随机分配到一个培训组.
- 在训练前后使用结构和功能磁共振成像 (MRI).
主要成果:
- 没有观察到海马体积,皮质体积或白质连接性的显著变化.
- 基于网络的分析显示了与任务相关的信息连接的变化.
- 这些功能变化主要涉及皮质区域和认知控制网络.
结论:
- 强化认知干预似乎调节功能连接,而不是导致结构性大脑变化.
- 认知训练可以通过优化暂时网络配置来增强认知控制.
- 研究结果表明,在认知干预研究中,重点从结构性可塑性转向动态功能网络变化.
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