Single Large Motor Unit Action-Potentials in Myopathies

A Hybrid Classifier for Characterizing Motor Unit Action Potentials in Diagnosing Neuromuscular Disorders

Background: The time and frequency features of motor unit action potentials (MUAPs) extracted from electromyographic (EMG) signal provide discriminative information for diagnosis and treatment of neuromuscular disorders. However, the results of conventional automatic diagnosis methods using MUAP features is not convincing yet.Objective: The main goal in designing a MUAP characterization system ...

Changes in motor unit action potentials during the fatigue test.

The studies were performed on medial gastrocnemius motor units of the rat. Changes in amplitude, duration and latency of motor unit action potentials were monitored in the course of fatigue test in the three types of motor unites: FF (fast twitch, fatigable), FR (fast twitch, resistant), and S (slow twitch, resistant) motor unit. In a majority of the motor units the amplitude of action potentia...

Action Potentials from Single Motor Units in Voluntary Contraction

In 1929 Adrian and Bronk demonstrated a more refined method than had hitherto been used for obtaining action potentials from muscle, not only in the laboratory animal, but also in voluntary contraction in man. These .workers devised very small concentric electrodes which detect activity of the single motor units in a much restricted area. Such electrodes have since been used extensively in this...

a hybrid classifier for characterizing motor unit action potentials in diagnosing neuromuscular disorders

background: the time and frequency features of motor unit action potentials (muaps) extracted from electromyographic (emg) signal provide discriminative information for diagnosis and treatment of neuromuscular disorders. however, the results of conventional automatic diagnosis methods using muap features is not convincing yet. objective: the main goal in designing a muap characterization system...

Motor Unit Action Potential Quantitation