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Excitability following antidromic activation in spinal motoneurones supplying red muscles

Excitability following antidromic activation in spinal motoneurones supplying red muscles J. Physiol. I49, 374-393 (I959) EXCITABILITY FOLLOWING ANTIDROMIC ACTIVATION IN SPINAL MOTONEURONES SUPPLYING RED MUSCLES BY M. * KUNO From the Department of Physiology, University of Utah College Salt Lake U.S.A. of Medicine, City, Utah, (Received June 1959) It is well known that red muscles may be from muscles distinguished pale by the slowness of their contraction (Fulton, 1926; Denny-Brown, 1929b). In addition, Denny-Brown (1929a) found that red muscle has a lower threshold for the stretch than fast postural reflexes, including reflex, pale muscle. A of histological study fibre diameter has also revealed that the average dia- meter of motor fibres to the slow red extensors is than for those to the smaller is pale extensors, although there a considerable overlap (Eccles & Sherrington, 1930). While these findings might suggest some differences in specific properties motoneurones between supplying red and pale muscles, no systematic approach has been made toward this problem until recently. By studying stretch in of reflexes the state post-tetanic potentiation it has recently been suggested that spinal motoneurones extrafusal innervating muscle fibres be classified into two Henatsch & may subgroups (Granit, Steg, 1956; Granit, Phillips, Skoglund & Steg, 1957). The tonic type is characterized a reflex http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Physiology Wiley

Excitability following antidromic activation in spinal motoneurones supplying red muscles

Kuno, M.
The Journal of Physiology , Volume 149 (2) – Jan 1, 1959
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References (25)

Publisher
Wiley
Copyright
© 2014 The Physiological Society
ISSN
0022-3751
eISSN
1469-7793
DOI
10.1113/jphysiol.1959.sp006345
Publisher site
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Abstract

J. Physiol. I49, 374-393 (I959) EXCITABILITY FOLLOWING ANTIDROMIC ACTIVATION IN SPINAL MOTONEURONES SUPPLYING RED MUSCLES BY M. * KUNO From the Department of Physiology, University of Utah College Salt Lake U.S.A. of Medicine, City, Utah, (Received June 1959) It is well known that red muscles may be from muscles distinguished pale by the slowness of their contraction (Fulton, 1926; Denny-Brown, 1929b). In addition, Denny-Brown (1929a) found that red muscle has a lower threshold for the stretch than fast postural reflexes, including reflex, pale muscle. A of histological study fibre diameter has also revealed that the average dia- meter of motor fibres to the slow red extensors is than for those to the smaller is pale extensors, although there a considerable overlap (Eccles & Sherrington, 1930). While these findings might suggest some differences in specific properties motoneurones between supplying red and pale muscles, no systematic approach has been made toward this problem until recently. By studying stretch in of reflexes the state post-tetanic potentiation it has recently been suggested that spinal motoneurones extrafusal innervating muscle fibres be classified into two Henatsch & may subgroups (Granit, Steg, 1956; Granit, Phillips, Skoglund & Steg, 1957). The tonic type is characterized a reflex

Journal

The Journal of Physiology – Wiley

Published: Jan 1, 1959

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