Rubrospinal control of static and dynamic fusimotor neurones

Acta Physiologica Scandinavica
B AppelbergH Johansson

Abstract

Rubrospinal effects on about 60 extracellularyl recorded gamma-motoneurones were studied in anesthetized cats. All cells were antidromically identified from various muscle nerves. 23 cells were regarded as dynamic as they were activated from a mesencephalic region previously known to influence selectively muscle spindle dynamic sensitivity. The pattern of rubrospinal influence on static fusimotor neurones to different muscles closely followed that previously demonstrated for alpha-motoneurones with pr edominantly excitation of flexor neurones and excitation or inhibition in equal amounts of extensor cells. Dynamic fusimotor neurones were influenced in a strictly reciprocal manner with excitation of flexor cells and inhibition of extensor cells except for a few neurones which could not be reached from nucleur ruber. Evidence was also obtained indicating that the shortest path from nucleus ruber to static fusimotor neurones involves one interneurone.

References

Jan 1, 1972·Experimental Brain Research·B Appelberg, T Jeneskog
Jan 1, 1972·Experimental Brain Research·T HongoA Lundberg
Jan 1, 1972·Experimental Brain Research·T HongoA Lundberg
Jan 1, 1972·Experimental Brain Research·F BaldisseraM Udo
Dec 1, 1963·Acta Physiologica Scandinavica·B APPELBERG, I Z KOSARY
Oct 1, 1964·The Journal of Physiology·A CROWE, P B MATTHEWS
Mar 1, 1965·The Journal of Physiology·M C BROWNP B MATTHEWS
Apr 1, 1965·Acta Physiologica Scandinavica·B APPELBERG, F EMONET-DENAND
Jun 29, 1960·The Japanese Journal of Physiology·K SASAKIS HASHIRAMOTO

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Citations

Apr 5, 2013·Evolution; International Journal of Organic Evolution·Callum F RossBieke Vanhooydonck
Sep 30, 2016·Journal of Computational Neuroscience·Bernard Grandjean, Marc A Maier
Nov 30, 2019·The Journal of Experimental Biology·Michael C GranatoskyCallum F Ross

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