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随着年龄的增长越来越好:在口头工作记忆编码和维护期间,振荡活动的发育变化
Abraham D Killanin1, Thomas W Ward2, Christine M Embury3
1Institute for Human Neuroscience, Boys Town National Research Hospital, Boys Town, NE, USA; Center for Pediatric Brain Health, Boys Town National Research Hospital, Boys Town, NE, USA; College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA.
Developmental cognitive neuroscience
|February 8, 2024
概括
年轻人工作记忆的发展显示了与年龄相关的大脑振荡的变化. 年龄较大的儿童表现出更强的α和theta脑电波,特别是在语言和视觉区域,表明发育效应.
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:
- 工作记忆对于认知功能至关重要.
- 振荡式大脑动态是成年人工作记忆的关键.
- 关于年龄相关的年轻人工作记忆振荡变化的研究有限.
研究的目的:
- 为了研究时间学年龄和工作记忆之间的关系,研究年轻人发育中的振荡动态.
- 为了确定在记忆编码和维护期间对大脑活动的发育影响.
- 探索这些神经过程中的性别年龄相互作用.
主要方法:
- 磁脑电图 (MEG) 用于记录大脑活动.
- 对82名年轻人 (6-14岁) 进行了修改后的斯特恩伯格口头工作记忆任务.
- 采用波束成形技术,在 (4-7 Hz) 和α (8-14 Hz) 波段中图像振荡反应.
主要成果:
- 观察到强的甲和α振荡反应.
- 年龄较大的参与者在左半球语言区域显示出更强的α振荡.
- 在编码过程中,在年长的年轻人中观察到尾太功率的增加,以及小脑和部区域的性别年龄相互作用.
结论:
- 时间学年龄与年轻人的工作记忆振荡动态有很强的关联.
- 这些发现揭示了对支持高阶功能的大脑网络的强有力的发育效应.
- 这项研究是第一个将年龄与男性和女性年轻人的工作记忆中的α和θ振荡联系在一起的研究.
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