Department of Psychology, Neuroscience & Behaviour, McMaster University, Canada.
Int J Psychophysiol. 2012 Apr;84(1):65-73. doi: 10.1016/j.ijpsycho.2012.01.011. Epub 2012 Jan 24.
Although the search for psychophysiological manifestations of social anxiety has a rich history, there appear to be no published reports examining the reliability of continuous electrocortical measures that putatively index stress vulnerability and stress reactivity in socially anxious individuals. We examined the 1-week test-retest reliability of regional electroencephalogram (EEG) alpha asymmetry and power, respiratory sinus arrhythmia (RSA), heart period, and heart period variability measures at rest and during anticipation of an impromptu speech in 26 adults diagnosed with social anxiety disorder (SAD). Across the 1-week time period, we found medium-to-large correlations for regional EEG asymmetry and large correlations for regional EEG alpha power, RSA, heart period, and heart period variability measures at rest and during speech anticipation, before and after accounting for age and medication status. These results are similar to patterns observed in nonclinical samples and appear to provide the first documented evidence of test-retest reliability of psychophysiological measures that index central nervous system activity in socially anxious individuals. These findings also provide support for the notion that resting frontal EEG asymmetry and RSA constitute relatively stable individual differences in this clinical population.
虽然对社交焦虑的心理生理表现的研究历史悠久，但似乎还没有发表的报告检查连续脑电（EEG）测量指标在社交焦虑个体中的应激易感性和应激反应的可靠性。我们在 26 名被诊断为社交焦虑障碍（SAD）的成年人中，检查了 1 周内区域 EEG 阿尔法不对称和功率、呼吸窦性心律失常（RSA）、心率和心率变异性在休息和即兴演讲前的测试-重测信度。在 1 周的时间内，我们发现区域 EEG 不对称的中到大相关，区域 EEG 阿尔法功率、RSA、心率和心率变异性在休息和演讲前的大相关，在考虑年龄和药物状态后。这些结果与非临床样本中观察到的模式相似，似乎为社交焦虑个体中反映中枢神经系统活动的心理生理测量的测试-重测信度提供了首次记录证据。这些发现还支持这样一种观点，即休息时额叶 EEG 不对称和 RSA 构成了该临床人群中相对稳定的个体差异。
