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시공간 재활 훈련이 정신분열병 환자의 인지 기능에 미치는 효과

The effect of visuospatial rehabilitation training on improvement of cognitive functions in patients with schizophrenia

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주제분류심리과학

초록

만성 정신분열병 환자를 대상으로 시공간 재활 훈련을 실시한 후 재활 훈련이 환자의 인지 기능 향상에 효과적인가를 조사하였다. 사회복귀 시설에 거주하는 22명의 정신분열병 환자가 연구에 참여하였으며, 이들을 재활군(n=11)과 통제군(n=11)으로 무선적으로 구분하였다. 재활군에 포함된 환자들에게는 시공간 재활 훈련이 실시된 반면 통제군에 포함된 환자들에게는 재활 훈련이 실시되지 않았다. 시공간 재활 훈련은 10개의 하위 프로그램으로 구성되었으며, 시운동 기술, 시지각력, 심상 및 회전, 공간 지각력과 시각적 통합 능력을 훈련하도록 개발되었다. 시공간 지각력/시각 기억(Rey-Osterrieth Complex Figure Test: ROCF), 주의(Stroop Color-Word Test, Trail-Making Test: TMT, d2 Test), 언어 기억(Korean-California Verbal Learning Test: K-CVLT) 및 집행 기능(Wisconsin Card Sorting Test: WCST)을 평가하는 신경심리검사와 정신분열병의 증상을 측정하는 임상 검사(The Positive and Negative Syndrome Scale: PANSS)가 재활 훈련 전과 후에 실시되었다. 재활 훈련 전에 실시한 신경심리 검사 및 임상 검사에서 두 집단 간에 유의한 차이가 관찰되지 않았다. 그러나 재활 후에 실시된 신경심리 검사에서 재활군이 통제군에 비하여 ROCF의 모사, Stroop Color-Word Test의 Color-Word 간섭조건과 TMT, part B에서 유의하게 수행이 향상되었고, 음성 증상의 완화를 보였다. 이 결과는 시공간 재활 훈련이 만성 정신분열병 환자의 인지 기능의 향상에 효과적이라는 것과 시공간 재활 훈련이 시공간 기능뿐만 아니라 주의의 향상에도 효과적인 것으로 미루어 시공간 지각의 장애가 주의 등과 같은 인지 기능의 장애와 관련되어 있음을 시사한다.

Abstract

This study investigated the effect of visuospatial rehabilitation training on the improvement of cognitive functions in schizophrenic patients. A total of 22 patients living at the Institute for Social Return participated. The rehabilitation group and the control group each consisted of 11 patients. The visuospatial training consists of 10 sub-programs, which were developed to train the visuomotor skills, visual perception, visual imagery & rotation, spatial perception and visual integration skills. Comprehensive neuropsychological tests such as Rey-Osterrieth Complex Figure Test(ROCF), Trail-Making Test(TMT), Stroop test, d2 test, K-CVLT, Wisconsin Card Sorting Test(WCST) and PANSS were administered before and after the training. There were no significant differences between the two groups in terms of demographic variables such as age, IQ, educational level, age of onset. The two groups did not differ on the performances of any of the neuropsychological tests and the PANSS scores administered prior to rehabilitation training. The rehabilitation group showed significantly improved performances on the copy condition of ROCF, TMT, part B and Stroop, Color-Word interference condition, which were administered after the training. However, the control group did not show these improvements. In addition, the rehabilitation group showed significantly reduced negative symptoms after training, but the control group did not. These results indicate that visuospatial training is effective not only for the improvement of visuospatial functioning, but also for attention. In addition, these results indicate the importance of cognitive rehabilitation for schizophrenic patients who are preparing for social return.

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