CAJ | 학술논문

为了研究双趋与双避冲突情景所诱发的脑电成分的差异,本研究分别记录了16名健康大学生被试在双趋、双避、无冲突三种不同情景下完成决策任务的反应时数据与脑电成分.结果表明：（1）被试在冲突情景下的决策反应时均长于无冲突情景,其中双趋冲突下反应时长于双避冲突；（2）双趋冲突情景诱发的P2的波峰值更高,潜伏期也更短,无冲突情景所引发的P2波峰值最小,潜伏期最长；（3）冲突情景与无冲突情景在300 ～ 400 ms之间出现了LPC的分离,动机冲突比无冲突情景诱发的LPC更正.本研究中脑电数据与行为数据得出一致性结果,双趋比双避情景诱发更深程度的负性情绪与注意唤醒,即较高的动机冲突.
위료연구쌍추여쌍피충돌정경소유발적뇌전성분적차이,본연구분별기록료16명건강대학생피시재쌍추、쌍피、무충돌삼충불동정경하완성결책임무적반응시수거여뇌전성분.결과표명：（1）피시재충돌정경하적결책반응시균장우무충돌정경,기중쌍추충돌하반응시장우쌍피충돌；（2）쌍추충돌정경유발적P2적파봉치경고,잠복기야경단,무충돌정경소인발적P2파봉치최소,잠복기최장；（3）충돌정경여무충돌정경재300 ～ 400 ms지간출현료LPC적분리,동궤충돌비무충돌정경유발적LPC경정.본연구중뇌전수거여행위수거득출일치성결과,쌍추비쌍피정경유발경심정도적부성정서여주의환성,즉교고적동궤충돌.
In order to explore the electrophysiological differences between approach - approach and avoidance - avoidance conflict situations, we recorded EEG and reaction time data in 16 healthy participants as they were per- forming decision -making task under approach -approach, avoidance -avoidance conflict and conflict -free situa- tions. The results shows that ： 1 ） reaction time under conflict significantly is longer than conflict - free situation, and approach - approach conflict situations is longer than avoidance - avoidance ;2） approach - approach conflict situa- tions induce a significantly larger amplitude peak and shorter latency of P2, and the amplitude is lowest under con- flict -free situation and the latency of which is longest; 3 ）conflict and conflict -free situations have dissociable im- pacts on LPC between 300 -400ms, and the former induces a more positive LPC. In the current study, we come to a consistent conclusion that approach - approach conflict situation evokes a deeper attention arousal and stronger motivation conflict than avoidance- avoidance.