摘要
目的为了研究健康成年男性心率变异性参数随精神负荷的变化关系,探讨交感神经系统与副交感神经系统的变化趋势。方法通过设计基于N-BACK实验范式的精神压力实验系统,对30名在校男性硕士研究生进行基于N-BACK的精神负荷测试实验,采集不同负荷水平下的心电信号并分析其心率变异性的时、频域参数。结果计算结果显示,时域指标R-R间期的标准差、R-R间期差值的均方根均随着精神负荷的增加,表现出明显减小的趋势;频域指标高频功率随着精神负荷的增加,表现出下降的趋势。结论本研究对自主神经系统状态及精神负荷的评估具有参考意义。
Objective To explore the changing trend of sympathetic nervous system and parasympathetic nervous system with the changing of mental stress, this process was accomplished by studying the relationship between heart rate variability parameters and mental workload in healthy adult males. Methods First, a mental stress experiment system was designed based on N-BACK experimental paradigm. Second, the mental stress test was performed on 30 male college graduate to acquire ECG signal under different mental stress level. Then the heart rate variability of ECG was analyzed. Results The calculation results showed that RMSSD as well as SDNN in time domain and the high frequency power components in frequency domain were decreased with the increasing of mental stress. Conclusion This study has reference value for the assessment of autonomic nervous system state and mental stress.
出处
《中国医疗设备》
2017年第6期36-38,共3页
China Medical Devices
基金
解放军总医院临床科研扶持基金(2015FC-CXYY-1008)
科技支撑计划课题(2013BAI03B03)
科技支撑计划课题(2013BAI03B04)
关键词
精神负荷
心率变异性
时域分析
频域分析
自主神经系统
mental stress
heart rate variability
time domain analysis
frequency domain analysis
autonomic nervous system
