在儿童的情绪处理过程中突出和前额系统的快速参与:MEG研究
Ioannis Ntoumanis1, Mally Townsend2, Crystal M Cooper3
1Jane and John Justin Institute for Mind Health, Cook Children's Health Care System, 1500 Cooper St, Fort Worth, TX 76104, USA; Department of Bioengineering, University of Texas at Arlington, 500 UTA Blvd, Arlington, TX 76010, USA.
NeuroImage
|February 14, 2026
概括
儿童快速处理情感图像,大脑活动因年龄和情感价值而有所不同. 这项研究强调了情绪处理中的发育变化以及与情绪障碍的潜在联系.
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
- 情感科学是一种情感科学.
背景情况:
- 情绪处理对于社会发展和理解情绪障碍至关重要.
- 以前使用功能性MRI的神经成像研究缺乏快速神经动态的时间分辨率.
- 现有的情绪刺激套件通常以成年人为重点,限制了它们对儿童的有效性.
研究的目的:
- 用磁脑图 (MEG) 研究儿童和青少年情绪处理的时空动态.
- 检查年龄如何影响大脑对情绪刺激的反应.
- 识别情绪处理的神经相关物和情绪障碍的潜在风险因素.
主要方法:
- 磁脑电图 (MEG) 用于记录57名儿童和青少年的大脑活动.
- 参与者从Nencki情感图像系统 (NAPS) 查看了愉快,不愉快和中性图像.
- 用基于集群的换测试分析了来源重建的MEG数据,以确定显著的大脑反应.
主要成果:
- 与中性刺激相比,愉快和不愉快的刺激都在突出和前额叶区域 (岛屿,轨道前额叶皮层) 引起了快速 (50-100毫秒) 的激活.
- 不愉快的刺激在突出和默认模式网络区域显示出更强,更持久的活动,表明负面偏差.
- 观察到发育上的差异:年幼的儿童对愉快的刺激表现出更大的中间前额外反应,而年长的青少年对不愉快的刺激表现出更大的反应.
结论:
- 儿童可以快速区分情感和中立信息.
- 负面信息由突出和默认模式网络系统优先处理.
- 在情绪处理过程中,前额头和默认模式网络活动的与年龄相关的变化是显而易见的,这为情绪障碍的发展轨迹提供了信息.
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