知觉驱动条件下悲伤性心境对抑郁情绪个体内隐记忆的影响

目的 探讨知觉驱动条件下悲伤性心境对抑郁情绪个体内隐记忆的影响.方法 采用Paller改进的知觉驱动内隐范式,对26名抑郁情绪被试和25名正常被试进行学习一测验任务.记录被试对不同情绪效价面孔的性别判断正确率.结果 ①正常组和抑郁情绪组的视觉模拟评分中,评价时间(F=4.61,P<0.05)、心境状态(F=21.61,P<0.05)有显著主效应,二者存在交互作用(F=4.13,P<0.05).组别无主效应.②正常组和抑郁情绪组对不同呈现时间的情绪面孔性别判断正确率中,呈现时间(F=4.12,P<0.05)、实验类型(F=20.55,P<0.05)有显著主效应,并且存在交互效应(F=31.72,P<0.05).③进一步简单效应分析发现:实验类型在呈现时间为3600 ms的正性(80±13)%,(92±10)%,F=65.06,P<0.05]、负性(58±12)%,(91±10)%,F=10.00,P<0.05]、中性(84±16)%,(88±9)%,F=12.49,P<0.05]面孔的性别判断正确率上的简单效应非常显著;实验类型在呈现时间为300ms的正性(76±12)%,(85±10)%,F=54.72,P<0.05]、中性(82±10)%,(80±10)%,F=54.57,P<0.05]面孔的性别判断正确率上的简单效应非常显著,同时,呈现时间为300ms的中性面孔的性别判断正确率的简单效应存在组间差异(F=54.72,P<0.05).结论 悲伤性心境使2组被试对正性和负性面孔的内隐记忆显著增强,抑郁情绪组较正常组在中性面孔的内隐性加工过程上存在显著差异.

The implicit memory of individual depression in percept-driven process under the influence of sad mood induction

Objective To investigate the effect of sad mood to implicit memory of depressed individuals under the condition of percept-driven process. Methods Using the percept-driven implicit paradigm improved by Paller,26 depression subjects and 25 normal subjects completed study-test task and reported the gender of different emotional faces. Results ①There were main effects of time(F = 4.61, P<0.05)and mood state(F= 21.61, P <0.05) ,significant interaction of time and emotion(F = 4. 13, P<0. 05) ,no significant difference of group on visual analogue scale(VAS) mood ratings. ②Among the accuracy rate of subjects' gender judging to different emotional faces,there were significant main effects on time(F = 4.12, P<0.05)and experiment type (F = 20.55, P < 0.05) , and there was significant interaction of time and experiment type (F=31.72,P<0.05). ③Further simple effects analysis showed that the positive((80 ± 13)%vs(92 ± 10)% , F=65.06, P<0.05) ,negative((58 ± 12)%vs(91 ±10)%,F=10.00,P<0.05),neutral((84±16)%vs(88±9)%, F= 12.49, P < 0. 05) faces when the presentation time was 3600ms in experiment type had significant simple effects; the positive ((76 ± 12)%vs(85±10)%,F=54.72, P<0.05) ,neutral((82 ± 10)% vs(80 ± 10)% , F = 54.57, P<0.05)faces when the presentation time was 300 ms in experiment types had significant simple effects, while the accuracy of neutral faces had significant simple effect between the two groups. Conclusion Sad mood enhance the implicit memory of both depressed and normal subjects to positive and negative faces,and the accuracy rate in implicit processing to neutral faces of depressed group were lower than that of normal group.