Identification of single motor units in skeletal muscle under low force isometric voluntary contractions using ultrafast ultrasound.

ABSTRACT: The central nervous system (CNS) controls skeletal muscles by the recruitment of motor units (MUs). Understanding MU function is critical in the diagnosis of neuromuscular diseases, exercise physiology and sports, and rehabilitation medicine. Recording and analyzing the MUs' electrical depolarization is the basis for state-of-the-art methods. Ultrafast ultrasound is a method that has the potential to study MUs because of the electrical depolarizations and consequent mechanical twitches. In this study, we evaluate if single MUs and their mechanical twitches can be identified using ultrafast ultrasound imaging of voluntary contractions. We compared decomposed spatio-temporal components of ultrasound image sequences against the gold standard needle electromyography. We found that 31% of the M

SUBMITTER: Rohlen R 

PROVIDER: S-EPMC7759573 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature