特质焦虑对静息状态及诱发负面情绪期间后激活不对称性的影响：脑电图研究
Trait anxiety impact on posterior activation asymmetries at rest and during evoked negative emotions: EEG investigation.
作者信息
Aftanas Ljubomir I, Pavlov Sergey V
机构信息
Psychophysiology Laboratory, State-Research Institute of Physiology, Siberian Branch, Russian Academy of Medical Sciences, Timakova str. 4, 630117, Novosibirsk, Russia.
出版信息
Int J Psychophysiol. 2005 Jan;55(1):85-94. doi: 10.1016/j.ijpsycho.2004.06.004.
The main objective of the present investigation was to examine how high trait anxiety would influence cortical EEG asymmetries under non-emotional conditions and while experiencing negative emotions. The 62-channel EEG was recorded in control (n=21) and high anxiety (HA, n=18) non-patient individuals. Results showed that in HA subjects, the lowest level of arousal (eyes closed) was associated with stronger right-sided parieto-temporal theta-1 (4-6 Hz) and beta-1 (12-18 Hz) activity, whereas increased non-emotional arousal (eyes open, viewing neutral movie clip) was marked by persisting favored right hemisphere beta-1 activity. In turn, viewing aversive movie clip by the HA group led to significant lateralized decrease of the right parieto-temporal beta-1 power, which was initially higher in the emotionally neutral conditions. The EEG data suggests that asymmetrical parieto-temporal theta-1 and beta-1 EEG activity might be better interpreted in terms of Gray's BAS and BIS theory.
本研究的主要目的是考察高特质焦虑如何在非情绪状态和体验负面情绪时影响皮层脑电图不对称性。对对照组（n = 21）和高焦虑（HA，n = 18）非患者个体进行了62导脑电图记录。结果显示，在高焦虑组受试者中，最低唤醒水平（闭眼）与右侧顶颞区更强的θ-1（4 - 6 Hz）和β-1（12 - 18 Hz）活动相关，而在非情绪性唤醒增加时（睁眼，观看中性电影片段），其特征是右侧半球β-1活动持续占优。相应地，高焦虑组观看厌恶电影片段导致右侧顶颞区β-1功率显著的侧化降低，该功率在情绪中性条件下最初较高。脑电图数据表明，顶颞区θ-1和β-1脑电图活动的不对称性或许能根据格雷的行为激活系统（BAS）和行为抑制系统（BIS）理论得到更好的解释。
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