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17 results

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Page 1
Molecular, Morphological and Electrophysiological Differences between Alpha and Gamma Motoneurons with Special Reference to the Trigeminal Motor Nucleus of Rat.
Kang Y, Saito M, Toyoda H. Kang Y, et al. Int J Mol Sci. 2024 May 12;25(10):5266. doi: 10.3390/ijms25105266. Int J Mol Sci. 2024. PMID: 38791305 Free PMC article. Review.
The muscle contraction during voluntary movement is controlled by activities of alpha- and gamma-motoneurons (alphaMNs and gammaMNs, respectively). In spite of the recent advances in research on molecular markers that can distinguish between alphaMNs and gammaMNs, e …
The muscle contraction during voluntary movement is controlled by activities of alpha- and gamma-motoneurons (alphaMNs and gam …
Proprioception and myoclonus.
Rossi-Durand C. Rossi-Durand C. Neurophysiol Clin. 2006 Sep-Dec;36(5-6):299-308. doi: 10.1016/j.neucli.2006.11.001. Epub 2006 Nov 30. Neurophysiol Clin. 2006. PMID: 17336774 Review.
The first part reminds of the structural and functional properties of these muscle mechanoreceptors, with arguments for an independent fusimotor command, i.e. the gamma-motoneurons, that would regulate spindle mechanical sensitivity in keeping with the requirements …
The first part reminds of the structural and functional properties of these muscle mechanoreceptors, with arguments for an independent fusim …
Deep Tendon Reflexes.
Walker HK. Walker HK. In: Walker HK, Hall WD, Hurst JW, editors. Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition. Boston: Butterworths; 1990. Chapter 72. In: Walker HK, Hall WD, Hurst JW, editors. Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition. Boston: Butterworths; 1990. Chapter 72. PMID: 21250237 Free Books & Documents. Review.
The cerebral cortex and a number of brainstem nuclei exert influence over the sensory input of the muscle spindles by means of the gamma motoneurons that are located in the anterior horn; these neurons supply a set of muscle fibers that control the length of the mus …
The cerebral cortex and a number of brainstem nuclei exert influence over the sensory input of the muscle spindles by means of the gamma …
Functional properties of human muscle spindles.
Macefield VG, Knellwolf TP. Macefield VG, et al. J Neurophysiol. 2018 Aug 1;120(2):452-467. doi: 10.1152/jn.00071.2018. Epub 2018 Apr 18. J Neurophysiol. 2018. PMID: 29668385 Free article. Review.
Unlike other mechanoreceptors in the somatosensory system, muscle spindles are unique in possessing motor innervation, via gamma-motoneurons (fusimotor neurons), that control their sensitivity to stretch. Much of what we know about human muscles spindles comes from …
Unlike other mechanoreceptors in the somatosensory system, muscle spindles are unique in possessing motor innervation, via gamma-m …
Muscle spindle and fusimotor activity in locomotion.
Ellaway PH, Taylor A, Durbaba R. Ellaway PH, et al. J Anat. 2015 Aug;227(2):157-66. doi: 10.1111/joa.12299. Epub 2015 Jun 5. J Anat. 2015. PMID: 26047022 Free PMC article. Review.
There is evidence for some alpha-gamma co-activation during locomotion involving static gamma motoneurons. However, both static and dynamic gamma motoneurons show patterns of modulation that are distinct from alpha motoneuron activity. ...
There is evidence for some alpha-gamma co-activation during locomotion involving static gamma motoneurons. However, both stati …
Escape from homeostasis: spinal microcircuits and progression of amyotrophic lateral sclerosis.
Brownstone RM, Lancelin C. Brownstone RM, et al. J Neurophysiol. 2018 May 1;119(5):1782-1794. doi: 10.1152/jn.00331.2017. Epub 2018 Jan 31. J Neurophysiol. 2018. PMID: 29384454 Free PMC article. Review.
Regardless of the initial pathogenic factors, motoneuron loss follows a specific pattern: the largest alpha-motoneurons die before smaller alpha-motoneurons, and gamma-motoneurons are spared. In this article, we examine how homeostatic responses to this orderly prog …
Regardless of the initial pathogenic factors, motoneuron loss follows a specific pattern: the largest alpha-motoneurons die before smaller a …
Mechanism of action of botulinum neurotoxin: Unexpected consequences.
Hallett M. Hallett M. Toxicon. 2018 Jun 1;147:73-76. doi: 10.1016/j.toxicon.2017.08.011. Epub 2017 Aug 11. Toxicon. 2018. PMID: 28803760 Free PMC article. Review.
Since BoNT is taken up more avidly in active presynaptic terminals, there is some selectivity for weakening muscles involved in frequent involuntary movements. BoNT blocks gamma motoneurons as well as alpha motoneurons, hence reducing afferent spindle activity which …
Since BoNT is taken up more avidly in active presynaptic terminals, there is some selectivity for weakening muscles involved in frequent inv …
On the distribution of information from muscle spindles in the spinal cord; how much does it depend on random factors?
Jankowska E. Jankowska E. J Anat. 2015 Aug;227(2):184-93. doi: 10.1111/joa.12331. J Anat. 2015. PMID: 26179024 Free PMC article. Review.
Information forwarded by individual muscle spindles is modulated by the dynamic and static gamma motoneurons in a differentiated way, depending on the coupling between the fusimotor neurons and the various intrafusal muscle fibres. ...
Information forwarded by individual muscle spindles is modulated by the dynamic and static gamma motoneurons in a differentiat …
On the role of recurrent inhibitory feedback in motor control.
Windhorst U. Windhorst U. Prog Neurobiol. 1996 Aug;49(6):517-87. doi: 10.1016/0301-0082(96)00023-8. Prog Neurobiol. 1996. PMID: 8912393 Review.
Another extension results from the discovery that recurrent inhibition affects not only skeleto-motoneurons, but also gamma-motoneurons, Ia inhibitory interneurons mediating reciprocal inhibition between antagonist motoneurons, other Renshaw cells and cells of origi …
Another extension results from the discovery that recurrent inhibition affects not only skeleto-motoneurons, but also gamma-motone …
17 results