강박성향군의 강박사고 위협자극에 대한 억제기능
Inhibitory Functions for Obsessive Threat Stimuli in Young Adults with Obsessive-Compulsive Traits
이종환 (경북대학교 심리학과)
곽호완 (경북대학교)
장문선 (경북대학교)
구본훈 (영남대학교병원 정신과 임상심리실)
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초록
본 연구는 강박성향 집단이 나타내는 개인적 위협자극에 대한 자동적 억제 결함의 특성을 밝히고, 강박성향 집단을 자생성/반응성 강박집단으로 분류하여 자극의 범주에 따른 억제 결함의 차이가 나타나는지를 확인하고자 수행되었다. 연구 1에서는 개인적 위협자극, 중립적, 일반적 위협자극으로 구성된 정서 스트룹 과제를 사용하여 강박성향 집단과 강박성향이 낮은 집단 간 수행차이를 분석하였다. 연구 2에서는 오염·불쾌, 중립적, 성·공격 자극을 사용한 지시된 망각과제를 실시하여 자생성 강박집단, 반응성 강박집단, 강박성향이 낮은 집단에서의 수행차이를 분석하였다. 연구 1의 결과, 강박성향 집단은 정서 스트룹 과제수행에서 개인적 위협자극이 제시되었을 때 간섭에 대한 억제의 결함을 보였다. 연구 2의 결과, 강박사고 하위집단 중 반응성 강박집단은 잊어버리라는 지시에도 불구하고 본인의 강박사고와 관련된 오염·불쾌 단어자극을 망각하는 것에 어려움을 보이는 것으로 나타났다. 이러한 결과는 강박성향 집단이 자신의 강박사고와 관련한 개인적 위협자극에 대하여 주의를 억제하는 것에 결함이 있음을 시사하며, 반응성 강박집단의 오염·불쾌 자극에 대한 시연억제의 손상을 반영한다. 결과적으로 강박장애에서 보이는 자동적, 의도적 억제결함은 강박장애를 가진 개인이 원치 않는 불안한 생각과 이미지에 공격받는 결과를 초래하는 것으로 해석될 수 있다. 또한 강박집단을 강박사고 유형에 따라 자생성 강박집단과 반응성 강박집단으로 나누어 살펴본 결과, 직접적인 자극에 의해 침투사고가 유발되는 반응성 강박집단은 오염·불쾌 단어자극에서 의도적 억제의 결함을 보인 반면 침투사고를 유발하는 자극이 명확하지 않은 자생성 강박집단은 의도적 억제의 결함을 확인하지 못하였다. 이는 두 집단의 이질성을 지지하며, 강박집단 간의 의도적 억제에서 자극의 범주와 유형에 따른 차이가 있음을 시사한다.
- keywords
- 강박장애, 자생성/반응성 강박사고, 억제기능, 정서 스트룹, 지시된 망각과제, obsessive-compulsive disorder, autogenous/reactive obsessions, inhibitory function emotional, emotional Stroop, directed forgetting
Abstract
The objective of this study is to investigate the characteristics of Obsessive-Compulsive(OC) tendencies’ automatic inhibitory dysfunction to personal threats stimuli, and to confirm whether any differences of the inhibitory dysfunction exists according to the different range of stimuli with classifying OC tendencies into its subgroups which are autogenous obsession and reactive obsession. In Study 1, OC tendencies group and OC lower tendencies group performed a stroop test under three conditions: (1) Individual threat, (2) Neutral, (3) General threat. In Study 2, the OC group was divided into two different subtypes: autogenous obsession group and reactive obsession group. Subjects which fell into the autogenous obsession group(AOs), control group(Cs) and reactive obsession(ROs) performed directed forgetting tasks using obsession threat stimuli of OC subtypes. The result of study 1, the OC tendencies group, showed reduced inhibition of individual threat material in the stroop test. The result of study 2, In spite of directed forgetting, showed the ROs impaired forgetting for contamination/unpleasant word related own obsession compared to the Cs and AOs, The results of this study suggest that individuals with obsessive-compulsive traits have attentional inhibition dysfunction in obsession-congruent individual threatening words. Also the results of this study reflect the ROs impaired rehearsal inhibition for contamination/unpleasant word. In conclusion, OC tendencies group’s failure to inhibitory control ability undesirable stimuli results in the person being bombed with recurrent unwanted and disturbing thoughts and images. Furthermore, classifying OC tendencies into its subgroups which are ROs and AOs demonstrate the ROs showed impaired forgetting for contamination/unpleasant word. On the other hand, the performance patterns indirected forgetting task using contamination/unpleasant word of the AOs were similar to those of the Cs. These findings support a partial heterogeneity in the OC group and the usefulness of classifying stimuli in an intentionally inhibited study.
- keywords
- 강박장애, 자생성/반응성 강박사고, 억제기능, 정서 스트룹, 지시된 망각과제, obsessive-compulsive disorder, autogenous/reactive obsessions, inhibitory function emotional, emotional Stroop, directed forgetting
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