Individual difference in β-band corticomuscular coherence and its relation to force steadiness during isometric voluntary ankle dorsiflexion in healthy humans

Stabilizing muscle force is an important ability for mobility of daily activities. This function is often referred as "force steadiness", and is quantified by calculating the magnitude of fluctuations in isometric muscle force around the averaged value. Indeed, this measure has been often calculated in the field of exercise and/or clinical neurophysiology, primarily to examine changes in motor function caused by several factors such as aging (Galganski et al., 1993; Tracy and Enoka, 2002; Vaillancourt and Newell, 2003), lack of muscle use (Shinohara et al., 2003; Clark et al., 2007), and neural disorders such as stroke (Chow and Stokic, 2014).

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