中文摘要：

目的研究重大创伤幸存者情绪自动加工对其认知的影响。方法比较10名重大创伤幸存者在创伤后一个月内与10名健康对照者完成闽上和阈下情绪任务的行为学和脑电结果。结果在阈上任务中，当启动刺激为正性或负性情绪图片时，创伤组平均反应时间长于对照组；但两组间反应正确率无明显差异。ERPs结果显示，阈上任务中创伤组P2潜伏期明显长于对照组，波幅无明显差异。结论大多数个体在经历重大创伤后，随时间推移其情绪加工及认知判断均渐趋向正常，P2成分可能是判断个体是否完全恢复的一个敏感的指标。

英文摘要：

Objective trauma survivors. Methods The aim of this study was to explore the influences of emotion on 10 survivors who experienced major trauma during one month and cognition in major 10 healthy controls were completed sub - threshold and supra - threshold emotion tasks, their behavior responses and electrophysiological data were recorded. Results Giving positive or negative emotion pictures as the priming stimulus, the average reaction time of survivors were longer than that of controls in supra - threshold emotion task, but the accuracy made no differences between the two groups. P2 latencies were prolonged in survivors, and P2 amplitudes had no significant differences between survivors and controls. Conclusions Emotion process and cognition judgment of most survivors are trending to normal after major trauma. P2 element is likely to be a sensitive marker to judge whether the individual recover completely.