Evolution, biomechanics, and neurobiology converge to explain selective finger motor control
Humans use their fingers to perform a variety of tasks, from simple grasping to manipulating
objects, to typing and playing musical instruments, a variety wider than any other species …
objects, to typing and playing musical instruments, a variety wider than any other species …
A unifying pathophysiological account for post-stroke spasticity and disordered motor control
Cortical and subcortical plastic reorganization occurs in the course of motor recovery after
stroke. It is largely accepted that plasticity of ipsilesional motor cortex primarily contributes to …
stroke. It is largely accepted that plasticity of ipsilesional motor cortex primarily contributes to …
Is there frequency-specificity in the motor control of walking? The putative differential role of alpha and beta oscillations
CC Charalambous, A Hadjipapas - Frontiers in Systems …, 2022 - frontiersin.org
Alpha and beta oscillations have been assessed thoroughly during walking due to their
potential role as proxies of the corticoreticulospinal tract (CReST) and corticospinal tract …
potential role as proxies of the corticoreticulospinal tract (CReST) and corticospinal tract …
The existence of the StartReact effect implies reticulospinal, not corticospinal, inputs dominate drive to motoneurons during voluntary movement
JA Tapia, T Tohyama, A Poll… - Journal of Neuroscience, 2022 - Soc Neuroscience
Reaction time is accelerated if a loud (startling) sound accompanies the cue—the
“StartReact” effect. Animal studies revealed a reticulospinal substrate for the startle reflex; …
“StartReact” effect. Animal studies revealed a reticulospinal substrate for the startle reflex; …
Extensive cortical convergence to primate reticulospinal pathways
Early evolution of the motor cortex included development of connections to brainstem
reticulospinal neurons; these projections persist in primates. In this study, we examined the …
reticulospinal neurons; these projections persist in primates. In this study, we examined the …
Express visuomotor responses reflect knowledge of both target locations and contextual rules during reaches of different amplitudes
When humans reach to visual targets, extremely rapid (∼ 90 ms) target-directed responses
can be observed in task-relevant proximal muscles. Such express visuomotor responses are …
can be observed in task-relevant proximal muscles. Such express visuomotor responses are …
Startling stimuli increase maximal motor unit discharge rate and rate of force development in humans
Maximal rate of force development in adult humans is determined by the maximal motor unit
discharge rate, however, the origin of the underlying synaptic inputs remains unclear. Here …
discharge rate, however, the origin of the underlying synaptic inputs remains unclear. Here …
Hand motor recovery following extensive frontoparietal cortical injury is accompanied by upregulated corticoreticular projections in monkey
WG Darling, J Ge, KS Stilwell-Morecraft… - Journal of …, 2018 - Soc Neuroscience
We tested the hypothesis that arm/hand motor recovery after injury of the lateral
sensorimotor cortex is associated with upregulation of the corticoreticular projection (CRP) …
sensorimotor cortex is associated with upregulation of the corticoreticular projection (CRP) …
Symbolic cues enhance express visuomotor responses in human arm muscles at the motor planning rather than the visuospatial processing stage
Humans can produce “express”(∼ 100 ms) arm muscle responses that are inflexibly locked
in time and space to visual target presentations, consistent with subcortical visuomotor …
in time and space to visual target presentations, consistent with subcortical visuomotor …
Differential poststroke motor recovery in an arm versus hand muscle in the absence of motor evoked potentials
Background. After stroke, recovery of movement in proximal and distal upper extremity (UE)
muscles appears to follow different time courses, suggesting differences in their neural …
muscles appears to follow different time courses, suggesting differences in their neural …