论文部分内容阅读
目的探讨应激条件下不同人格特征射击运动员P 300的变化。方法应用特质焦虑问卷(TA I)、艾森克人格问卷(EPQ)在20名射击运动员中,筛选出不同特质焦虑、人格特征的被试,以2009年5月全国射击冠军赛作为应激源,应用N eu-roScan 32 channel ERP System记录其应激前和应激时P 300的变化。结果①高特质焦虑、中等特质焦虑、高神经质运动员应激时P 300潜伏期长于应激前(F=18.81,P=0.000;F=4.55,P=0.048;F=8.260,P=0.011),高特质焦虑、高神经质和中等神经质运动员应激时P 300波幅大于应激前(F=14.81,P=0.001;F=7.300,P=0.025;F=8.160,P=0.014),低特质焦虑运动员应激时P 300波幅小于应激前(F=5.76,P=0.028);②各组应激前潜伏期、波幅无显著性差异,应激时不同特质焦虑运动员的P 300潜伏期、波幅存在显著性差异(F=5.150,P=0.018;F=8.030,P=0.007),高特质焦虑运动员P 300潜伏期长于、P 300波幅大于中等特质焦虑和低特质焦虑运动员(P<0.05);不同神经质运动员的P 300潜伏期、波幅存在显著性差异(F=6.070,P=0.010;F=5.860,P=0.012),高神经质运动员P 300潜伏期长于中等神经质和低神经质运动员(P<0.05),P 300波幅大于低神经质运动员(P<0.05)。结论不同特质焦虑、神经质运动员应激前后P 300的差异提示,个体情绪体验的变化可造成P 300的改变。
Objective To investigate the changes of P 300 in shooters with different personality traits under stress conditions. Methods Trainees with different traits of anxiety and personality were screened out from 20 shooting athletes by using trait anxiety questionnaire (TAI) and Eysenck Personality Questionnaire (EPQ). According to the national shooting championship in May 2009 as the stress source, The changes of P300 before and during stress were recorded using N eu-roScan 32 channel ERP System. Results ① The P300 latency of high trait anxiety, moderate trait anxiety and high nervous athlete stress was longer than that before stress (F = 18.81, P = 0.000; F = 4.55, P = 0.048; F = 8.260, P = 0.011) Trait-anxiety, high-neurotic and moderate neurotic athletes stress P300 amplitude greater than before stress (F = 14.81, P = 0.001; F = 7.300, P = 0.025; F = 8.160, P = 0.014), low trait anxiety athletes should (P = 0.028), P300 amplitude was less than that before stress (F = 5.76, P = 0.028); ② There was no significant difference in pre-stress latency and amplitude between groups, and there was significant difference in P300 latency and amplitude between different trait anxiety and stress conditions (P = 0.018; F = 8.030, P = 0.007). The P300 latency of high trait anxiety athletes was longer than that of P300, and the amplitude of P300 was higher than that of middle trait anxiety and low trait anxiety athletes (P <0.05) (P = 0.010; F = 5.860, P = 0.012). The latency of P300 of high neurotic athletes was longer than that of moderate neuroticism and low neuroticism athletes (P <0.05). The amplitude of P300 was higher than that of low neuroticism Neurotic athletes (P <0.05). Conclusion The differences in P300 before and after stress with different trait anxiety and neurotic athletes suggest that the change of individual emotional experience may lead to the change of P300.