人类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, Tucson, United States.
eLife
|October 28, 2025
概括
认知训练并没有改变大脑结构,但增强了大脑网络中的功能连接. 这表明学习涉及灵活的网络调整,而不是永久的物理变化.
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于日常生活至关重要.
- 了解认知技能获得的潜在大脑机制至关重要.
- 以前的研究还没有完全解决认知训练是否会诱导结构性或功能性大脑变化.
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导致大脑的可观察变化.
- 在认知技能学习后,区分结构性和功能性大脑适应.
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,随机分配到培训组.
- 在训练期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,皮质体积或白质微观结构的显著变化.
- 基于网络的分析显示了与任务相关的功能连接的变化.
- 连接的变化主要发生在皮层区域之间,涉及认知控制网络.
结论:
- 认知干预似乎调节大脑网络中的功能连接.
- 这些发现表明,认知技能获得涉及动态网络重新配置,而不是持久的结构变化.
- 通过短暂的网络配置来适应大脑的能力可能是认知改进的基础.
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