考试焦虑个体静息态脑电的振荡特征

Resting-state EEG Brain Oscillatory Activity in Test Anxiety

目的:高考试焦虑个体存在认知障碍和情绪异常,这些缺损可能会在静息态脑电活动中得到反应。本研究将探索考试焦虑个体静息态脑电的振荡特征。方法:选取40名低考试焦虑者和39名高考试焦虑者完成8分钟的静息态脑电数据采集。选取与认知能力相关的静息态脑电指标额叶theta/beta值、alpha1能量和alpha2能量,以及与情绪调节相关的静息态脑电指标额叶alpha波偏侧化进行分析。结果:高考试焦虑组个体的考试焦虑量表得分和theta/beta值显著正相关;高考试焦虑组的alpha1和alpha2能量均显著高于低考试焦虑组,且高考试焦虑组个体的考试焦虑量表得分和alpha1能量显著正相关。结论:静息状态下,高考试焦虑个体可能主要存在注意能力削弱的问题,这一发现为考试焦虑的诊断及其神经机制的理解提供了独特的视角。

Objective:High test anxiety persons are always characterized by cognitive impairment and emotional abnormalities.These defects may be reflected in resting-state EEG brain oscillatory activity.The present study aimed to explore resting-state EEG brain oscillatory activity in test anxiety.Methods:8-min resting-state EEG datasets of 40 low test anxiety subjects and 39 high test anxiety subjects were involved in the present study.Resting state EEG indicators related to cognitive ability,namely frontal theta/beta value,alpha 1 and alpha 2 energy,and the indicator related to emotional regulation,namely frontal alpha asymmetry were selected for analysis.Results:Test anxiety scale(TAS)scores were significantly and positively correlated with frontal theta/beta values in high test anxiety group.High test anxiety subjects had a greater alpha1 and alpha 2 power than low test anxiety subjects;TAS scores were significantly and positively correlated with alpha1 values in high test anxiety group.Conclusion:High test anxiety persons may mainly be accompanied by attention impairment in the resting state.This provides a unique window into the diagnosis of test anxiety,and the understanding of neural mechanisms underlying test anxiety.