Mscan Mune
Mscan Mune - Related Videos
08:25
CMAP Scan MUNE (MScan) - A Novel Motor Unit Number Estimation (MUNE) Method
0 Views •
Cited by 50 •
2018
This protocol describes a new method to estimate the number of functioning motor units in a muscle, by fitting a model to a detailed stimulus-response curve of the compound muscle action potential. It is quick and easy to perform and analyze and has excellent reproducibility.
09:07
Electrophysiological Motor Unit Number Estimation (MUNE) Measuring Compound Muscle Action Potential (CMAP) in Mouse Hindlimb Muscles
0 Views •
Cited by 86 •
2015
We present refined protocols that allow in vivo monitoring of motor unit function in the mouse. Techniques to measure compound muscle action potential (CMAP) and motor unit number estimation (MUNE) in the mouse hind limb muscles innervated by the sciatic nerve are described.
12:24
Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse
0 Views •
Cited by 7 •
2014
This study demonstrates the successful establishment of magnetic resonance microscopy imaging as a non-invasive tool to assess the cardiac abnormalities in mice affected with autoimmune myocarditis. The data indicate that the technique can be used to monitor the disease-progression in live animals.
FAQs
MScan MUNE varies the intensity of electrical stimulation applied to a peripheral motor nerve and records the resulting compound muscle action potentials. The resulting stimulus-response scan contains changes produced as additional motor units become activated. Computational analysis then separates these contributions, allowing the overall response to be interpreted in terms of individual motor-unit activity rather than only as a combined muscle signal.
Changing stimulus intensity reveals how the recorded muscle response grows as motor units are recruited. This graded stimulus-response pattern provides the information needed for computational separation of individual contributions. Using a range of intensities therefore makes the measurement more informative than relying on a single electrical response, because it captures the activation behavior underlying the compound muscle action potential.
The estimate provides a quantitative view of how many motor units can activate the examined muscle, linking the measurement to motor axon integrity. A reduced estimate can therefore support assessment of motor-unit loss in neuromuscular disease. Interpreted alongside the stimulus-response scan, the result helps researchers study changes in the motor system rather than relying only on qualitative observations.
Repeating measurements over time allows investigators to examine whether the estimated motor-unit population changes during disease or intervention. This longitudinal perspective can help track progression and evaluate treatment effects, while reducing reliance on a single time point. In neuroscience research, serial data also contribute to a clearer understanding of how motor system degeneration develops within the studied muscle.
An assessment applies electrical stimuli of varying intensity to a peripheral motor nerve while recording the muscle’s compound muscle action potentials. These recordings are assembled into a stimulus-response scan, which is then analyzed computationally to separate motor-unit contributions. The resulting estimate can be used for quantitative assessment of the motor units activating the examined muscle.
Researchers can use MScan MUNE when they need a quantitative measure related to motor-unit loss and motor axon integrity. The method is relevant to studies of amyotrophic lateral sclerosis and peripheral neuropathy, where degeneration of the motor system is an important concern. It can also support treatment studies by providing a repeated measurement for comparing motor-unit status over time.
Within neuroscience, the technique connects peripheral nerve stimulation and muscle recordings with questions about motor system degeneration. Its quantitative estimate helps investigators examine the integrity of motor axons and the loss of functioning motor units in neuromuscular conditions. By applying the measurement repeatedly, studies can relate physiological changes to disease progression and assess whether treatment effects are reflected in motor-unit outcomes.