J Korean Acad Rehabil Med Search


Journal of the Korean Academy of Rehabilitation Medicine 1995;19(2):7.
F/M Ratios in Polyneuropathy and Spastic Hyperreflexia
Myeong Ok Kim, M.D. , Hee Kyu Kwon, M.D.
Department of Rehabilitation Medicine, Korea University College of Medicine

Department of Rehabilitation Medicine, Aju University College of Medicine*

다발성 신경병증과 경직성 반사항진증에서 F/M 비에 대한 연구
김명옥, 권희규
고려대학교 의과대학 재활의학교실

Since F responses involve conduction in motor fibers to and from the spinal cord as well as discharge of anterior horn cells, F waves are dependent on the state of both the peripheral and central nervous system. The ratios of F to M amplitudes, determined by dividing the mean amplitude of 20 F waves by the amplitude of maximum evoked compound muscle action potential recording from the abductor pollicis brevis and abductor hallucis, were compared from age matched control subjects and patients with polyneuropathies or spastic hyperreflexia.

Compared with controls, F/M ratios were increased at statistically significant levels in all patients with either peripheral or central lesions.

Even if the mechanisms differ, the results indicate a similar physiological response in situations where muscle tension might be abnormal whether the injury is peripheral or central.

Key Words: F/M ratios, F/M ratios, Polyneuropathy, Spastic hyperreflexia
Share :
Facebook Twitter Linked In Google+ Line it
METRICS Graph View
  • 560 View
  • 6 Download
Related articles in ARM


Browse all articles >

Terms of Use   |   Privacy Polity
Editorial Office
Department of Rehabilitation Medicine, Seoul National University Hospital
101 Daehak-ro, Jongno-gu, Seoul, Korea
Tel: +82-10-8678-2671    Fax: +82-2-6072-5244    E-mail: edit@e-arm.org; edit.karm@gmail.com
Business Registration: 110-82-07460                

Copyright © 2023 by Korean Academy of Rehabilitation Medicine.

Developed in M2PI

Close layer