Abstract
IT has been shown that thoracic motoneurones are rnonosynaptically excited by the lowest threshold affercnts in the intercostal nerves1. These afferents are assumed to arise from primary endings of the muscle spindles present in cat intercostal2 muscles. The intercostal muscle spindles are shown here to be regulated through their fusimotor fibres by a central control closely resembling that which governs the activity of alpha respiratory motoneurones.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Eccles, R. M., Sears, T. A., and Shealy, C. N., Nature, 193, 844 (1962).
Huber, G. C., Amer. J. Anat., 1, 520 (1902).
Eccles, J. C., and Sherrington, C. S., Proc. Roy. Soc., B, 106, 326 (1930).
Hunt, C. C., J. Physiol., 115, 456 (1951).
Gasser, H. S., and Grundfest, H., Amer. J. Physiol., 127, 393 (1939).
Critchlow, V., and Euler, C., Experientia, 18, 426 (1962).
Williams, P. L., and Wendell-Smith, C. P., Quart. J. Micro. Sci., 101, 43 (1960).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
SEARS, T. Activity of Fusimotor Fibres innervating Muscle Spindles in the Intercostal Muscles of the Cat. Nature 197, 1013–1014 (1963). https://doi.org/10.1038/1971013a0
Issue Date:
DOI: https://doi.org/10.1038/1971013a0
This article is cited by
-
Myelinated nerve fiber supply and muscle spindles in the respiratory muscles of cat: Quantitative study
Anatomy and Embryology (1978)
-
Muscle receptors in the control of voluntary movement
Spinal Cord (1972)
-
Behaviour of Jaw Muscle Stretch Receptors during Active and Passive Movements in the Cat
Nature (1968)
-
Chest injuries and complications in the early stages of spinal cord injury
Spinal Cord (1968)
-
Dorsal root respiratory impulses during respiration in conditions of an excessive intrapulmonary oxygen pressure
Bulletin of Experimental Biology and Medicine (1966)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.
