Scalp Electrical Activity Related to Autonomic Nervous During a Mental Arithmetic Task

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Scalp Electrical Activity Related to Autonomic Nervous During a Mental Arithmetic Task

更新时间：2025-07-09

- Scalp Electrical Activity Related to Autonomic Nervous During a Mental Arithmetic Task
- Vol. 43, Issue 10, Pages: 124-128(2009)
- 作者机构：
  
  西安交通大学生物医学信息工程教育部重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： R318.04
- Online First：10 October 2009，
  
  Published：2009
- 稿件说明：
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Scalp Electrical Activity Related to Autonomic Nervous During a Mental Arithmetic Task[J]. 2009, 43(10): 124-128.
DOI：

Scalp Electrical Activity Related to Autonomic Nervous During a Mental Arithmetic Task[J]. 2009, 43(10): 124-128. DOI：

摘要

通过部分直接相干性(PDC)对心算任务中脑区间信息流的方向进行分析

研究了与心脏自主神经活动有关的前后脑区的功能耦合.实验对象为43名健康男性自愿者

通过心率变异性的功率谱分析进行评价交感和副交感神经活动.实验显示

心算任务中的心率明显加快(P<0.01)

交感活动显著增加而副交感活动显著降低(P<0.01).同时

alpha频段的小波包能量显著降低

beta频段的小波包能量显著增加(P<0.01)

前后脑区信息流从顶到额方向转变为额到顶方向

并且信息流强度显著增加(P<0.05).相关分析显示

自主神经活动对心率调节的增强与头皮神经元额到顶区耦合程度的增加显著相关(P<0.05).结果表明

心算应激任务引起了脑皮层中央前区向后区信息流的增强

进而调节交感和副交感神经活动

加快心率.

Abstract

The direction of information flow within electroencephalogram(EEG)and the relationship between functional coupling at different electrode pairs and cardiac automatic nervous system during a mental arithmetic(MA)task are explored with partial directed coherence(PDC). Forty-three healthy male subjects voluntarily participate in the project. The sympathetic and parasympathetic activities are estimated with heart rate variability obtained by power spectral analysis of R-R intervals. The results show that when mental arithmetic task is implemented heart rate increases(P<0.01)

the sympathetic activity increases and the sympathetic activity decreases(P<0.01); relative wavelet packet energy in alpha rhythm of EEG decreases and the beta rhythm of EEG increases significantly(P<0.01); the direction of the information flow changed from posterior-to-anterior direction to anterior-to-posterior direction and the information flow get stronger(P<0.05). There are obvious correlations between the increases of frontal and posterior coupling and heart rate variability(P<0.05). It is noted that anterior-to-posterior direction of the cortical functional coupling enhanced with the decrease of parasympathetic activity and increase of sympathetic activity

and the post-central areas influence heart rate by virtue of increasing sympathetic activity and decreasing parasympathetic activity during MA.

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references

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脑深部剌激电极的结构优化及其模拟分析.西安交通大学学报,2008,42(12):1537-1540.

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