攻击人格特质影响颞肌活动第二外感受抑制的研究

Personality trait aggression influences the second exteroceptive suppression of temporalis muscle activity.

目的探讨攻击人格特质对颞肌活动外感受抑制的影响。方法对65名高、低攻击倾向个体(以临 床估计)先检测颞肌外感受抑制,后行Zuckerman—Kuhlman人格量表(ZKPQ)、感觉寻求量表(SSS)、Plutchik-van Pragg抑郁量表(PVP)测试,最后选取符合研究分析要求的49人(高攻击22名,低攻击27名)实验数据进行统计分 析。结果高攻击组颞肌第二外感受抑制持续时间明显低于低攻击组。高攻击组ZKPQ的冲动感觉寻求、神经质 -焦虑和攻击-敌意3分量表得分、PVP总分明显高于低攻击组。2组所有人格特质或抑郁倾向与外感受抑制潜 伏期或持续时间均无相关关系。结论有限的神经生理学研究分析显示,高攻击人格特质个体可能存在脑干功能 紊乱。

Objective To explore the influences of personality trait aggression upon the exteroceptive suppression of temporalis muscle activity. Methods 65 subjects with high or low aggression trends, judged by clinical evalution, have been asked to undergo a temporalis ES2 test procedure, and answer the Zuckerman - Kuhlman personality questionnair （ZKPQ） , the Zuckerman sensation seeking scales （SSS） , the Plutchik -van Pragg depression inventory （PVP）. Finally, 22 subjects with high ZKPQ aggression trait score and 27 with low score were selected for data analysis. Results 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 when compared with the low aggression group. The personality traits were not related with either latency or duration of temporalis ES2 in either high or low aggression group. Conclusions This study, from a limited neurophysiological prospective, indicates that some brainstem dysfunction might exist in subjects with high aggression trait.