临床儿科杂志 ›› 2022, Vol. 40 ›› Issue (3): 202-207.doi: 10.12372/jcp.2022.21e0872

• 神经系统疾病专栏 • 上一篇    下一篇

健康儿童睁闭眼不同状态下多频段大脑磁活动研究

范玉颖1, 向敬2, 刘雪雁1, 王华1()   

  1. 1.中国医科大学附属盛京医院小儿神经内科(辽宁沈阳 110004)
    2.美国辛辛那提儿童医院脑磁图中心(美国辛辛那提 45229)
  • 收稿日期:2021-06-08 出版日期:2022-03-15 发布日期:2022-03-09
  • 通讯作者: 王华 E-mail:wangh1@sj-hospital.org
  • 基金资助:
    国家自然科学基金青年基金项目(81501299);中国医科大学附属盛京医院345人才工程项目

A study of multi-frequency neuromagnetic brain activities in children with eyes-open and eyes-closed

FAN Yuying1, XIANG Jing2, LIU Xueyan1, WANG Hua1()   

  1. 1. Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning, China
    2. MEG Center, Division of Neurology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
  • Received:2021-06-08 Online:2022-03-15 Published:2022-03-09
  • Contact: WANG Hua E-mail:wangh1@sj-hospital.org

摘要:

目的 探讨健康儿童睁眼和闭眼不同状态下的多频段大脑磁活动特征。方法 记录24名健康儿童睁眼和闭眼时的脑磁图数据。应用累积源成像方法,对大脑磁活动在多个频段进行分析,包括δ(1~4 Hz)、 θ(4~8 Hz)、α(8~12 Hz)、β(12~30 Hz)、低γ(30~55 Hz)和高γ(65~90 Hz)频段。结果 纳入研究24名,平均年龄(10.3±2.4)岁,男14名、女10名。闭眼状态组儿童的α和β频段脑磁源绝对强度较睁眼状态组显著增加,差异有统计学意义(P<0.01)。与睁眼状态组相比,闭眼状态组儿童α和β频段脑磁源相对强度显著升高,差异有统计学意义(P<0.01)。闭眼状态组的δ、低γ和高γ频段脑磁源相对强度较睁眼状态组显著降低,差异有统计学意义(P<0.05)。各频段的脑磁源位置分布在睁、闭眼状态下差异无统计学意义(P>0.05)。结论 睁眼和闭眼状态下,大脑活动在较宽的频率范围内发生显著变化。闭眼可以调节多种频率范围内的大脑生理活动。在脑磁图或脑电图的研究中,应考虑睁眼闭眼的基线条件差异。

关键词: 脑磁图, 累积源成像, 多频分析, 睁眼, 闭眼

Abstract:

Objective To investigate the characteristics of brain activities within multi-frequency ranges in the developing brain during eyes-open and eyes-closed. Methods The magnetoencephalography (MEG) data were recorded from 24 healthy children during eyes-open and eyes-closed. The MEG sources were localized with accumulated source imaging and analyzed in multi-frequency bands, including delta (1-4 Hz), theta (4-8 Hz), alpha (8-12 Hz), beta (12-30 Hz), low-gamma (30-55 Hz) and high-gamma (65-90 Hz). Results Twenty-four subjects (14 boys and 10 girls) were enrolled, and the average age was (10.3±2.4) years. Compared with eyes-open, the absolute source power of alpha and beta activities during eyes-closed was increased in children, and the difference was statistically significant (P<0.01). Compared with eyes-open, the relative source power of alpha and beta activities was increased (P<0.01), while the relative source power of delta, low-gamma and high-gamma activities was decreased during eyes-closed in children, and the differences were statistically significant (P<0.05). There was no significant difference in the source location distribution of each frequency band between eyes-open and eyes-closed in children (P>0.05). Conclusions The brain activity varies significantly over a wide frequency range between eyes-open and eyes-closed in children. Eye closure can regulate brain physiological activity in a wide range of frequencies. The differences in baseline conditions between eyes-closed and eyes-open should be considered in MEG or EEG studies.

Key words: magnetoencephalography, accumulated source imaging, multi-frequency analysis, eyes-open, eyes-closed