Generic acquisition protocol for quantitative MRI of the spinal cord

J Cohen-Adad, E Alonso-Ortiz, M Abramovic… - Nature protocols, 2021 - nature.com
Quantitative spinal cord (SC) magnetic resonance imaging (MRI) presents many challenges,
including a lack of standardized imaging protocols. Here we present a prospectively …

A new definition of poststroke spasticity and the interference of spasticity with motor recovery from acute to chronic stages

S Li, GE Francisco, WZ Rymer - … and Neural Repair, 2021 - journals.sagepub.com
The relationship of poststroke spasticity and motor recovery can be confusing.“True” motor
recovery refers to return of motor behaviors to prestroke state with the same end-effectors …

The strength of the corticospinal tract not the reticulospinal tract determines upper-limb impairment level and capacity for skill-acquisition in the sub-acute post-stroke …

U Hammerbeck, SF Tyson, P Samraj… - … and neural repair, 2021 - journals.sagepub.com
Background. Upper-limb impairment in patients with chronic stroke appears to be partly
attributable to an upregulated reticulospinal tract (RST). Here, we assessed whether the …

Restoring after central nervous system injuries: neural mechanisms and translational applications of motor recovery

Z Gao, Z Pang, Y Chen, G Lei, S Zhu, G Li, Y Shen… - Neuroscience …, 2022 - Springer
Central nervous system (CNS) injuries, including stroke, traumatic brain injury, and spinal
cord injury, are leading causes of long-term disability. It is estimated that more than half of …

Abnormal synergies and associated reactions post-hemiparetic stroke reflect muscle activation patterns of brainstem motor pathways

LM McPherson, JPA Dewald - Frontiers in neurology, 2022 - frontiersin.org
Individuals with moderate-to-severe post-stroke hemiparesis cannot control proximal and
distal joints of the arm independently because they are constrained to stereotypical …

[HTML][HTML] Correlation Tensor MRI deciphers underlying kurtosis sources in stroke

R Alves, RN Henriques, L Kerkelä, C Chavarrías… - Neuroimage, 2022 - Elsevier
Noninvasively detecting and characterizing modulations in cellular scale micro-architecture
remains a desideratum for contemporary neuroimaging. Diffusion MRI (dMRI) has become …

Distinct corticospinal and reticulospinal contributions to voluntary control of elbow flexor and extensor muscles in humans with tetraplegia

S Sangari, MA Perez - Journal of Neuroscience, 2020 - Soc Neuroscience
Humans with cervical spinal cord injury (SCI) often recover voluntary control of elbow flexors
and, to a much lesser extent, elbow extensor muscles. The neural mechanisms underlying …

Impact of parameter selection on estimates of motoneuron excitability using paired motor unit analysis

A Hassan, CK Thompson, F Negro… - Journal of neural …, 2020 - iopscience.iop.org
Objective. Noninvasive estimation of motoneuron excitability in human motoneurons is
achieved through a paired motor unit analysis (ΔF) that quantifies hysteresis in the …

Myoelectric interface training enables targeted reduction in abnormal muscle co-activation

G Seo, A Kishta, E Mugler, MW Slutzky… - … of neuroengineering and …, 2022 - Springer
Background Abnormal patterns of muscle co-activation contribute to impaired movement
after stroke. Previously, we developed a myoelectric computer interface (MyoCI) training …

Mapping of multiple muscles with transcranial magnetic stimulation: absolute and relative test–retest reliability

M Nazarova, P Novikov, E Ivanina… - Human brain …, 2021 - Wiley Online Library
The spatial accuracy of transcranial magnetic stimulation (TMS) may be as small as a few
millimeters. Despite such great potential, navigated TMS (nTMS) mapping is still underused …