Abstract
The potential of corticomuscular and intermuscular coherence for research on human motor control
Highlights
In an experimental study on the changes in descending drive during muscle fatigue, Semmler et al (2013) investigated intermuscular (EMG–EMG) coherence in elbow muscles after eccentric exercise
The synaptic transformations underlying IMC are confined to the spinal motor units (MUs)
They involve: (1) the transformation of presynaptic input into the firing patterns of alpha motoneurons and (2) the propagation of the action potential along the muscle fibers resulting in the MU action potential (MUAP)
Summary
In an experimental study on the changes in descending drive during muscle fatigue, Semmler et al (2013) investigated intermuscular (EMG–EMG) coherence in elbow muscles after eccentric exercise. These measures have the potential to provide key insights into the composition of descending drive (Farmer, 1998) and involve non-invasive recording techniques that make them suitable for clinical applications. The use of computational modeling and new recording techniques are considered to obtain a more accurate estimate of the underlying changes in descending drive.
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