Fundamental movement patterns require continuous skeletal muscle coordination, where
muscle fibers with different timing of activation synchronize their dynamics across muscles …

Skeletal muscles continuously coordinate to facilitate a wide range of movements. Muscle
fiber composition and timing of activation account for distinct muscle functions and dynamics …

Control of voluntary movement is predicated on integration between circuits in the brain and
spinal cord. Although damage is often restricted to supraspinal or spinal circuits in cases of …

The purpose was to identify the variables that can explain the variance in the grooved
pegboard times of older adults categorized as either fast or slow performers. Participants (n …

The acquisition of a motor skill involves adaptations of spinal and supraspinal pathways to
alpha motoneurons. In this study, we estimated the shared synaptic contributions of these …

Neural interfacing has played an essential role in advancing our understanding of
fundamental movement neurophysiology and the development of human-machine interface …

Multiple studies have experimentally observed common fluctuations in the discharge rates of
spinal motor neurons, which have been classically interpreted as generated by correlated …

A low intensity electrical current delivered transcutaneously at a high frequency over a
muscle can acutely recruit motor units in a physiological order by activating peripheral …

This dissertation explores the effects of aging on motor function with a specific focus on
manual dexterity and walking endurance. The first two studies focus on manual dexterity in …

This dissertation comprises four studies about force steadiness, which is a measure of the
accuracy of force control. The first two studies involved an intervention in which older adults …