Clinical Significance of the R3 Response of the Blink Reflex in Medullar and Cervical Spinal Cord Lesions.
- Author:
Jeong Lim MOON
1
;
Kyung Heui JUNG
;
Yeon Joong YOON
;
Jin Hong CHOI
;
Sun Sook SUH
Author Information
1. Department of Rehabilitation Medicine, School of Medicine The Catholic University of Korea.
- Publication Type:Original Article
- Keywords:
Blink reflex;
R3 response;
Medulla;
Spinal cord
- MeSH:
Blinking*;
Evoked Potentials;
Humans;
Reference Values;
Reflex;
Spinal Cord*
- From:Journal of the Korean Academy of Rehabilitation Medicine
1999;23(6):1199-1206
- CountryRepublic of Korea
- Language:Korean
-
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.
