A Trial of Diagnostic Program Using a Computer for Unilateral Visual Neglect. |
Kim, Min Young , Chun, Sae Il , Park, Eun Sook , Lee, Jeong Jun , Kim, Jaehie |
1Green Physical Medicine, Yonsei University College of Medicine. 2Department of Rehabilitation Clinic, Yonsei University College of Medicine. 3Department of Rehabilitation Medicine, Yonsei University College of Medicine. 4Department of Electrical, Yonsei University College of Engineering. 5Department of Computer Engineering, Yonsei University College of Engineering. |
편측 시각 무시에 대한 컴퓨터 진단 프로그램의 시도 |
김민영, 전세일1, 박은숙1, 이정준2, 김재희2 |
그린 재활의학과의원, 1연세대학교 의과대학 재활의학교실, 2연세대학교 공과대학 전자공학과 |
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Abstract |
Objective To confirm the merit of a newly-developed computer system that detects gaze in diagnosing unilateral visual neglect syndrome. Method The subjects were 20 normal adults and 2 left hemiplegic patients with prominent unilateral visual neglect. The 'line bisection' test and the 'star cancellation' test were performed, and their modified forms of tests-the 'center scanning in vacant 2-dimension space' and the 'one object scanning' among 25 different objects were also performed on a table with right hand and on a computer monitor with head motion. Results Normal subjects didn't show difference in line bisection and center scanning tests. However, center scanning time was shorter in the methods that used a computer. By comparing horizontal shifting in the line bisection test and the center scanning test, the center was more shifted toward left side than in the line bisection test when the tests were performed using a computer. Duration to perform the star cancellation was longer than to perform the one object scanning test. It took 3 minutes for each subject to obtain the results from the line bisection and the center scanning on papers, whereas the results from the tests with a computer were displayed at the moment of marking by the subjects. By the results from the patients, the marked centers were deviated toward right side and longer duration was needed to perform the tests in comparison with normal subjects. Conclusion Visual perception can be changed by dimension even in normal adults, and the program using a computer that was developed in this study has merit especially by shortening the testing time. However, continuous study is needed for practical use of this program in the patients with unilateral neglect.
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Key Words:
Unilateral visual neglect, Computer program, Gaze detection system |
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