Motoneurons were identified by their position in the spinal cord (ventral horn, lamina IX), size (substantially larger than interneurons and glial cells), and presence of Nissl substance arranged in polygonal clumps.
(1998) Neural control in human muscle fatigue: Changes in muscle afferents,
motoneurones and motocortical drive.
The H reflex is composed of a mass electrical muscle response resulting from the firing of the
motoneuron group innervating a muscle or synergistic muscle group (Fig.
Nerve cells (
motoneurons) and skeletal muscle cells (myoblasts) cultivated from human stem cells are plated on opposite sides of the membrane, creating a barrier that provides electrical and chemical isolation.
[4] recently showed that MI induces a subliminal motor command that modulates the influence of the afferent input to
motoneurons at the spinal level, via primary afferent depolarizing interneurons.
Trias et al., "Phenotypically aberrant astrocytes that promote
motoneuron damage in a model of inherited amyotrophic lateral sclerosis," Proceedings of the National Academy of Sciences of the United States of America, vol.
Given that the neural drive to muscle is the net activity of all the innervating
motoneurons, the best estimate of the neural drive is derived from the
motoneuron (and, consequently, motor unit) spike trains themselves [25].
In the normal group, the
motoneuron nuclei were densely blue stained, while in the model group, the
motoneuron nuclei were stained light blue.
Schulz, "Disinhibition in the gamma
motoneuron circuitry: a neglected mechanism for understanding myofascial pain syndromes?" Applied Psychophysiology Biofeedback, vol.