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Journal of the Korean Academy of Rehabilitation Medicine 1999;23(6):1199-1206.
Clinical Significance of the R3 Response of the Blink Reflex in Medullar and Cervical Spinal Cord Lesions.
Moon, Jeong Lim , Jung, Kyung Heui , Yoon, Yeon Joong , Choi, Jin Hong , Suh, Sun Sook
Department of Rehabilitation Medicine, School of Medicine The Catholic University of Korea.
연수 및 상부 경수 손상 환자에서 안륜근 반사의 R3 반응
문정림, 정경희, 윤연중, 최진홍, 서선숙
가톨릭대학교 의과대학 재활의학교실
Abstract

Objective
To compare the R3 response of the blink reflex in medullar and spinal cord lesion and to investigate whether the reflex arc of the R3 response descend to the cervical spinal cord or not.


Method
We have studied 3 patients with medullar lesion and 5 patients with cervical spinal cord or vertebral lesion. Normal ranges of the R3 response refer to the results suggested by Moon et al.


Results
In 3 patients with medullar lesion, two patients with lateral medullar lesion showed delayed R3 latency or no evoked potential. Four patients with cervial spinal cord lesion showed no R3 response. In one patient with disc protrusion R3 was normal.


Conclusion
Our results support the hypothesis that the reflex arc of the R3 response descend to the cervical spinal cord.

Key Words: R3 response, Blink reflex, R3 response, Medulla, Spinal cord


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