【摘要】 目的:了解高述情障碍者听觉诱发电位P300的特征;初步探讨述情障碍发生的神经生物学机制;方法:应用多伦多述情障碍量表中文版(TAS-20-C)对湖南某高校300名大学生志愿者的述情障碍程度进行评定,按TAS得分高低,选取16名得分最高的被试作为述情障碍高分组,选取16名得分最低的被试作为述情障碍低分组,两组被试均进行听觉P300的检测;结果:述情障碍高分组在Cz点和Pz点所诱发的P300波幅明显高于述情障碍低分组(P<0.05),而Fz、T7、T8点所诱发的P300波幅两组间无明显差异;Fz、Cz、Pz、T7、T8点诱发的P300潜伏期无明显差异。结论:述情障碍高分组听觉P300波幅明显增高,提示高述情障碍个体存在认知功能的损伤。更多还原

【Abstract】 Objective: To investigate the character of the auditory event-related potentials P300 of subjects with high alexithymia. Methods: 300 undergraduate students were evaluated by 20-item Toronto Alexithym Scale China revision(TAS-20-C), 16 students who got the highest score were chosen as the high score group and 16 students who got the lowest score were chosen as the low score group. The auditory event-related potentials P300 were performed in two groups. Results: Amplitude of point Cz and Pz were significantly higher in high score group(P<0.05). Conclusion: P300’s amplitude was significantly increased in high score group of alexithymia, indicating the cognitive function of the subjects with high alexithymia was incomplete.更多还原