Hamilton, L.D., Mazzo, M.R., Petrigna, L., Ahmed, A., A. , & Enoka, R., M. .  (2018). Poor Estimates of Motor Variability Are Associated with Longer Grooved Pegboard Times for Middle-Aged and Older Adults. Journal of neurophysiology, 121(2), 588–601. https://doi.org/10.1152/jn.00543.2018