Cortical silent period duration and its implications for surround inhibition of a hand muscle
Surround inhibition is a neural mechanism that assists in the focusing of excitatory drive to
muscles responsible for a given movement (agonist muscles) by suppressing unwanted …
muscles responsible for a given movement (agonist muscles) by suppressing unwanted …
Relationships between motor unit size and recruitment threshold in older adults: implications for size principle
As a part of the aging process, motor unit reorganization occurs in which small motoneurons
reinnervate predominantly fast-twitch muscle fibers that have lost their innervation. We …
reinnervate predominantly fast-twitch muscle fibers that have lost their innervation. We …
A framework for identifying the adaptations responsible for differences in pegboard times between middle-aged and older adults
LD Hamilton, E Thomas, AM Almuklass… - Experimental …, 2017 - Elsevier
Time to complete two tests of manual dexterity, the 9-hole Peg Test and Grooved Pegboard
Test, increases with advancing age. However, the adaptations responsible for the …
Test, increases with advancing age. However, the adaptations responsible for the …
Preserved motor asymmetry in late adulthood: is measuring chronological age enough?
SY Schaefer - Neuroscience, 2015 - Elsevier
When comparing motor performance of the dominant and nondominant hands, older adults
tend to be less asymmetric compared to young adults. This has suggested decreased motor …
tend to be less asymmetric compared to young adults. This has suggested decreased motor …
Poor estimates of motor variability are associated with longer grooved pegboard times for middle-aged and older adults
LD Hamilton, MR Mazzo, L Petrigna… - Journal of …, 2019 - journals.physiology.org
Goal-directed movements that involve greater motor variability are performed with an
increased risk that the intended goal will not be achieved. The ability to estimate motor …
increased risk that the intended goal will not be achieved. The ability to estimate motor …
An acute application of transcranial random noise stimulation does not enhance motor skill acquisition or retention in a golf putting task
LL de Albuquerque, KM Fischer, AL Pauls… - Human Movement …, 2019 - Elsevier
Transcranial random noise stimulation (tRNS) is a brain stimulation technique that has been
shown to increase motor performance in simple motor tasks. The purpose was to determine …
shown to increase motor performance in simple motor tasks. The purpose was to determine …
Movement trajectory smoothness is not associated with the endpoint accuracy of rapid multi-joint arm movements in young and older adults
The minimum variance theory proposes that motor commands are corrupted by signal-
dependent noise and smooth trajectories with low noise levels are selected to minimize …
dependent noise and smooth trajectories with low noise levels are selected to minimize …
Aging and limb alter the neuromuscular control of goal-directed movements
The purpose of this study was to determine whether the neuromuscular control of goal-
directed movements is different for young and older adults with the upper and lower limbs …
directed movements is different for young and older adults with the upper and lower limbs …
Altered activation of the antagonist muscle during practice compromises motor learning in older adults
Aging impairs the activation of muscle; however, it remains unclear whether it contributes to
deficits in motor learning in older adults. The purpose of this study was to determine whether …
deficits in motor learning in older adults. The purpose of this study was to determine whether …
Timing variability and not force variability predicts the endpoint accuracy of fast and slow isometric contractions
The purpose of the study was to determine the contributions of endpoint variance and
trajectory variability to the endpoint accuracy of goal-directed isometric contractions when …
trajectory variability to the endpoint accuracy of goal-directed isometric contractions when …