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분열형 인격성향군의 자동 대 의식적 얼굴정서처리 과정과 신경심리 기능과의 관련성

Relationships between Autonomous and Conscious Facial Emotional Processes and Neuropsychological Functions in Nonclinical College Students with Schizotypal Traits

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참고문헌

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주제분류심리과학

초록

분열형 인격성향군의 자동 및 의식적 얼굴정서 처리과정과 신경심리 기능과의 관련성을 조사하였다. 특히 분열형 인격성향군이 자동적 얼굴정서 처리과정은 유지하지만 의식적 얼굴정서 처리과정의 결함을 가지고 있는가와 이러한 결함이 인지 기능과 어떻게 관련되어 있는가를 알아보았다. 분열형 인격장애 질문지(Schizotypal Personality Questionnaire: SPQ) 점수에 근거하여 분열형 인격성향군(n=15)과 정상통제군(n=15)을 선정하였다. 자동적 얼굴정서 처리과정은 성별판단 과제로 측정하였고 의식적 얼굴정서 처리과정은 정서명명 과제로 측정하였다. 신경심리 기능의 평가에는 주의(Trail Making Test: TMT, d2 test, Stroop test), 집행기능(Wisconsin Card Sorting Test: WCST)과 기억(Korean version of the California Verbal Learning Test: K-CVLT, Rey-Osterrieth Complex Figure Test: RCFT)이 포함되었다. 성별판단 과제에서는 분열형 인격성향군과 정상통제군 사이에 유의한 차이가 관찰되지 않았으나, 정서명명 과제에서는 두 집단 간의 유의한 차이가 관찰되었다. 즉 분열형 인격성향군이 정상통제군에 비해 유의하게 높은 오반응율을 보였다. 또한 신경심리 검사 중 TMT part B의 반응 시간, RCFT의 모사 단계의 반응 시간과 d2 검사의 총 오류수가 정서명명 과제의 수행을 잘 예측하였다. 이러한 결과는 분열형 인격성향을 가지는 사람이 의식적 정서처리의 결함을 가지고 있다는 것과 의식적 얼굴정서 처리가 시공간 지각능력, 주의 및 정신적 유동성 등의 인지 기능과 관련되어 있음을 시사한다.

Abstract

This study investigated the relationships between autonomous and conscious facial emotional processes and neuropsychological functions in nonclinical college students with psychometrically-defined schizotypal traits. Based on scores from the Schizotypal Personality Questionnaire(SPQ), schizotypal trait(n=15) and normal control(n=15) groups were selected. For the measurement of autonomous and conscious facial emotional processes, gender judgment and emotional discrimination tasks were administered, respectively. Neuropsychological functions such as verbal/nonverbal memory, executive function and attention were measured. Results indicated that the schizotypal trait and control groups did not differ on the gender discrimination task both in terms of response time(RT) and error rate. However, the schizotypal trait group showed significantly higher error rates than did the control group on the emotional discrimination task. Further, RTs on the emotional discrimination task was significantly correlated with RTs on the Trail Making Test, part B and the Copy condition of Rey-Osterrieth Complex Figure Test, while the error rate on the emotional discrimination task was associated with total number of errors on the d2 test. These results indicate that autonomous emotional processing is maintained but that conscious emotional processing is impaired in nonclinical individuals with schizotypal traits, and that impaired conscious emotional processing seems to be related to attention, visuospatial perception and mental flexibility.

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