摘要
目的:探讨不同特质焦虑大学生应激条件下的ERP特点。方法:以大学英语四级考试为应激源,应用特质-状态焦虑量表在200名考生中,筛选高特质焦虑和低特质焦虑各15人,使用NeuroScan32ChannelERPSystem观察应激期和应激后P3变化。结果:①低特质焦虑组应激后P3波幅大于应激期(P<0.05),潜伏期小于应激期。②高特质焦虑组应激期和应激后相比,P3波幅、潜伏期无变化。③应激时,高、低特质焦虑组P3波幅、潜伏期无明显差异。④应激后,低特质焦虑组P3波幅大于高特质焦虑组、潜伏期小于高特质焦虑组(P<0.05)。结论:高、低特质人群的P3差异提示不同人格特质群体在相同应激事件中,认知功能有差异。
Objective： To investigate the characters of ERP in undergraduates with different trait anxiety during exam stress. Methods： By the State Trait Anxiety Inventory, one group of 15 undergraduates with high trait anxiety and another group with low trait anxiety were chosen from 200 participants in Band 4 College English Test. Their change of P3 were observed through NeuroScan 32 Channel ERP System during pre-exam and post-exam. Results： The amplitude of P3 of the group with low trait anxiety was enhanced while another group with high trait anxiety had no significant difference after exam; The latency of P3 of the group with low trait anxiety were decreased while another group with high trait anxiety had no significant difference after exam; There weren＇t significant differences in amplitude and latency of P3 between high trait anxiety group and low trait anxiety group before exam; There were significant enhance of amplitude of P3 and decrease of latency of P3 in low trait anxiety group after exam as compared with high trait anxiety group. Conclusion： The result suggests different trait anxiety groups have different cognitive functions. When confronting with the same stress.
出处
《中国临床心理学杂志》
CSCD
2005年第3期330-332,共3页
Chinese Journal of Clinical Psychology
基金
全军医药卫生科研基金课题(04M021)
国家自然科学基金课题(30270364
30325026)
中国科学院重要方向项目(KSCX2-SW-221)
关键词
特质焦虑
考试应激
事件相关电位
Trait anxiety
Exam stress
Event-related potentials （ERPs）
