Wang Wei, Sun Guoqiang, Ye Xujun, Shen Mowei, Zhu Rui, Xu Yi
Center of Psychotherapy, Department of Clinical Psychology, Zhejiang University School of Medicine, Yan'an Road 353, 310031 Hangzhou, Zhejiang, China.
Neurophysiol Clin. 2006 Mar-Apr;36(2):63-9. doi: 10.1016/j.neucli.2006.05.001. Epub 2006 May 24.
There is evidence that the second exteroceptive suppression period of temporalis muscle activity (ES2) is modulated by the 5-HT neuronal activity in the brainstem, and the aggression trait is also connected with the cerebral 5-HT neuronal innervation. We therefore studied the temporalis ES2 in subjects with high and low aggression traits.
Sixty-five subjects with either low or high aggression trends, judged by clinical interview, answered the Zuckerman-Kuhlman Personality Questionnaire (ZKPQ), the Zuckerman Sensation Seeking Scales (SSS) and the Plutchik-van Praag Depression Inventory (PVP). These also underwent a temporalis ES2 test procedure. Twenty-two subjects with a high ZKPQ aggression trait score and 27 with a low score were selected for data analysis.
On average, the high aggression group displayed significantly reduced temporalis ES2 duration, elevated ZKPQ Impulsive Sensation Seeking, Neuroticism-Anxiety and Aggression-Hostility, and PVP scores. The personality traits were not related with either latency or duration of temporalis ES2 in any group. The PVP score, however, was negatively correlated with ES2 duration in all 49 subjects.
This study demonstrates neurophysiologic signs of brainstem dysfunction in subjects with high aggression traits.
有证据表明颞肌活动的第二个外感受性抑制期（ES2）受脑干中5-羟色胺（5-HT）神经元活动调节，且攻击特质也与大脑5-HT神经元支配有关。因此，我们研究了具有高、低攻击特质的受试者的颞肌ES2。
通过临床访谈判断，65名具有低或高攻击倾向的受试者回答了祖克曼-库尔曼人格问卷（ZKPQ）、祖克曼感觉寻求量表（SSS）和普拉奇克-范普拉格抑郁量表（PVP）。他们还接受了颞肌ES2测试程序。选取22名ZKPQ攻击特质得分高的受试者和27名得分低的受试者进行数据分析。
平均而言，高攻击组的颞肌ES2持续时间显著缩短，ZKPQ冲动感觉寻求、神经质-焦虑和攻击-敌意得分以及PVP得分升高。在任何组中，人格特质与颞肌ES2的潜伏期或持续时间均无关联。然而，在所有49名受试者中，PVP得分与ES2持续时间呈负相关。
本研究证明了具有高攻击特质的受试者存在脑干功能障碍的神经生理学迹象。
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