Common synaptic input, synergies and size principle: Control of spinal motor neurons for movement generation

F Hug, S Avrillon, J Ibáñez… - The Journal of …, 2023 - Wiley Online Library
Understanding how movement is controlled by the CNS remains a major challenge, with
ongoing debate about basic features underlying this control. In current established views …

Approaches to revealing the neural basis of muscle synergies: a review and a critique

VCK Cheung, K Seki - Journal of neurophysiology, 2021 - journals.physiology.org
The central nervous system (CNS) may produce coordinated motor outputs via the
combination of motor modules representable as muscle synergies. Identification of muscle …

The neural origin of muscle synergies

E Bizzi, VCK Cheung - Frontiers in computational neuroscience, 2013 - frontiersin.org
Muscle synergies are neural coordinative structures that function to alleviate the
computational burden associated with the control of movement and posture. In this …

Transformation of nonfunctional spinal circuits into functional states after the loss of brain input

G Courtine, Y Gerasimenko, R Van Den Brand… - Nature …, 2009 - nature.com
After complete spinal cord transections that removed all supraspinal inputs in adult rats,
combinations of serotonergic agonists and epidural electrical stimulation were able to …

Motor patterns in human walking and running

G Cappellini, YP Ivanenko… - Journal of …, 2006 - journals.physiology.org
Despite distinct differences between walking and running, the two types of human
locomotion are likely to be controlled by shared pattern-generating networks. However, the …

Shared and specific muscle synergies in natural motor behaviors

A d'Avella, E Bizzi - Proceedings of the national academy of …, 2005 - National Acad Sciences
Selecting the appropriate muscle pattern to achieve a given goal is an extremely complex
task because of the dimensionality of the search space and because of the nonlinear and …

Combining modules for movement

E Bizzi, VCK Cheung, A d'Avella, P Saltiel… - Brain research reviews, 2008 - Elsevier
We review experiments supporting the hypothesis that the vertebrate motor system produces
movements by combining a small number of units of motor output. Using a variety of …

Direct control of paralysed muscles by cortical neurons

CT Moritz, SI Perlmutter, EE Fetz - Nature, 2008 - nature.com
A potential treatment for paralysis resulting from spinal cord injury is to route control signals
from the brain around the injury by artificial connections. Such signals could then control …

Muscles from the same muscle group do not necessarily share common drive: evidence from the human triceps surae

F Hug, A Del Vecchio, S Avrillon… - Journal of applied …, 2021 - journals.physiology.org
It has been proposed that movements are produced through groups of muscles, or motor
modules, activated by common neural commands. However, the neural origin of motor …

Stability of muscle synergies for voluntary actions after cortical stroke in humans

VCK Cheung, L Piron, M Agostini… - Proceedings of the …, 2009 - National Acad Sciences
Production of voluntary movements relies critically on the functional integration of several
motor cortical areas, such as the primary motor cortex, and the spinal circuitries …