Mouse Motoneuron
Mouse Motoneuron - Related Videos
03:21
Trans-Spinal Direct Current Stimulation of a Rat's Spinal Motoneuron
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2025
This video describes the in vivo intracellular recording of rat motoneurons under trans-spinal direct current stimulation. The protocol describes how to measure membrane properties and record the rhythmic firing of motoneurons before, during, and after anodal or cathodal polarization of the spinal cord.
09:25
Lectin-based Isolation and Culture of Mouse Embryonic Motoneurons
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Cited by 21 •
2011
An alternative way of isolating mouse embryonic motoneurons from the spinal cord is described. The method takes into account the fact that lectin can bind to the low affinity nerve growth factor receptor p75NTR. This lectin-based preplating allows a purification similar to that with a specific antibody against the p75NTR.
13:07
Simultaneous Intracellular Recording of a Lumbar Motoneuron and the Force Produced by its Motor Unit in the Adult Mouse In vivo
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Cited by 15 •
2012
This new method permits the simultaneous intracellular recording of a single adult mouse motoneuron and the measurement of the force produced by its muscle fibers. The combined investigation of the electrical and mechanical properties of motor units in normal and genetically modified animals is a breakthrough for the study of the neuromuscular system.
07:43
Modeling Charcot-Marie-Tooth Disease In Vitro by Transfecting Mouse Primary Motoneurons
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Cited by 4 •
2019
The goal of this technique is to prepare a highly enriched culture of primary motoneurons (MNs) from murine spinal cord. To evaluate the consequences of mutations causing MN diseases, we describe here the isolation of these isolated MNs and their transfection by magnetofection.
10:11
Facial Nerve Axotomy in Mice: A Model to Study Motoneuron Response to Injury
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Cited by 27 •
2015
We present a surgical protocol detailing how to perform a cut or crush axotomy on the facial nerve in the mouse. The facial nerve axotomy can be employed to study the physiological response to nerve injury and test therapeutic techniques.
FAQs
A motor unit connects one motoneuron with the muscle fibers it controls, providing a useful organizational level for studying movement. Researchers can therefore examine motor control not only at the level of individual neurons, but also through coordinated neuron-fiber groups. Changes in these units can help relate neural signaling to muscle output.
Synaptic input determines whether the motoneuron reaches threshold, while the resulting action potential carries the signal along the axon toward the neuromuscular junction. This sequence gives researchers a mechanistic chain to analyze: altered input, membrane excitability, axonal signaling, or transmitter release may each change how neural activity influences muscle fibers.
Because the cell sits within a pathway linking synaptic input to muscle activation, altered signaling can be evaluated at multiple functional points. Investigators can ask whether changes affect membrane excitability, action-potential transmission, neuromuscular communication, movement, or survival. This framework helps connect cellular mechanisms with broader consequences for motor control.
Electrophysiology, imaging, and genetic models answer complementary questions about mouse motoneurons. Electrophysiology examines electrical signaling, imaging helps visualize relevant cellular or circuit changes, and genetic models allow investigators to study altered biological conditions. Used together, these approaches can relate motoneuron activity and signaling to movement, neuromuscular function, development, injury, or disease.
Studying survival adds a dimension beyond immediate motor performance. A mouse motoneuron investigation can ask not only whether altered signaling changes movement, but also whether the neuron remains viable under injury or disease-related conditions. This distinction is important in neuroscience because functional impairment and neuronal loss represent related, but not identical, outcomes.
Mouse motoneurons provide a way to connect altered neural signaling with two outcomes emphasized in amyotrophic lateral sclerosis research: impaired movement and reduced neuronal survival. Genetic models can place these changes in disease-related contexts, while electrophysiology and imaging help investigate signaling alterations. This combination supports analysis across cellular, circuit, and motor levels.