Results 81 to 90 of about 271,425 (337)

Functional MRI Evidence for Motor Cortex Reorganization Adjacent to a Lesion in a Primary Motor Cortex

American Journal of Physical Medicine & Rehabilitation, 2002
The object of this study was to verify motor cortex reorganization in patients with primary motor cortex injury using functional magnetic resonance imaging.Ten control subjects and two patients with primary motor cortex injury, caused by a traumatic brain injury in patient 1 and meningioma in patient 2, were evaluated.
Sung Ho Jang, Bong Soo Han, Yongmin Chang, Woo Mok Byun, Jun Lee, Sang Ho Ahn   +5 more
openaire   +4 more sources

Correspondence of MRI and nTMS With EDSS in Multiple Sclerosis: Longitudinal Follow‐Up Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Considering the characteristics of multiple sclerosis (MS) disease and its impact on motor disability, this study aims to assess the functional integrity of the corticospinal tract by examining motor evoked potentials (MEPs), Expanded Disability Status Scale (EDSS) scores, magnetic resonance imaging (MRI) lesion counts, and ...
Antonia Bralić, Sanda Pavelin, Nikolina Pleić, Joško Šoda, Krešimir Dolić, Anita Markotić, Ana Ćurković Katić, Angela Mastelić, Nikolina Režić Mužinić, Jasna Duranović, Zlatko Kljajić, Ivona Stipica Safić, Zoran Đogaš, Maja Rogić Vidaković   +13 more
wiley   +1 more source

Detecting Resting-state Neural Connectivity Using Dynamic Network Analysis on Multiband fMRI Data [PDF]

arXiv, 2017
This paper describes an approach of using dynamic Structural Equation Modeling (SEM) analysis to estimate the connectivity networks from resting-state fMRI data measured by a multiband EPI sequence. Two structural equation models were estimated at each voxel with respect to the sensory-motor network and default-mode network.
arxiv  

Cortical Excitability Before and After Long‐Term Perampanel Treatment for Epilepsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Antiseizure medications (ASMs), which may influence cortical excitability, are the mainstay of epilepsy treatment. Transcranial magnetic stimulation (TMS) helps evaluate cortical excitability. We assessed changes in TMS responses using serial TMS measurements in people treated with an adjunctive noncompetitive AMPA‐receptor ...
Robert M. Helling, Johannes P. van Dijk, Prisca R. Bauer, Roland D. Thijs, Josemir W. Sander, Machiel Zwarts, Gerhard H. Visser   +6 more
wiley   +1 more source

How transcranial direct current stimulation facilitates post-stroke rehabilitation [PDF]

arXiv, 2019
Whether transcranial direct current stimulation (tDCS) benefits stroke rehabilitation remains unclear. To investigate how tDCS reorganizes brain circuitry, nineteen post-stroke patients underwent rehabilitation sessions with bi-hemispheric real vs sham tDCS intervention. Resting motor threshold measurements showed tDCS evoked higher excitability in the
arxiv  

What is the functional relevance of reorganization in primary motor cortex after spinal cord injury?

Neurobiology of Disease, 2019
Motor output maps within primary motor cortex are widely distributed and modified by motor skill learning and neurological injury. Functions that these maps represent after spinal cord injury remain debatable.
M.A. Urbin, Dylan A. Royston, Douglas J. Weber, Michael L. Boninger, Jennifer L. Collinger   +4 more
doaj  

HPDL Variant Type Correlates With Clinical Disease Onset and Severity

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Recently, a mitochondrial encephalopathy due to biallelic HPDL variants was described, associated with a broad range of clinical manifestations ranging from severe, infantile‐onset neurodegeneration to adolescence‐onset hereditary spastic paraplegia. HPDL converts 4‐hydroxyphenylpyruvate acid (4‐HPPA) into 4‐hydroxymandelate (4‐HMA),
Eun Hye Lee, Olivia Kim‐Mcmanus, Jennifer H. Yang, Richard Haas, Maha S. Zaki, Ghada M. H. Abdel‐Salam, Yuji Nakamura, Mohamed S. Abdel‐Hamind, Darius Ebrahimi‐Fakhari, Julian E. Alecu, Nicola Brunetti‐Pierri, Varunvenkat M. Srinivasan, Vykuntaraju K. Gowda, Stephanie Gross, Yasemin Alanay, Paria Najarzadeh Totbati, Manya Yadavilli, Liana Friedman, Naomi Meave Ojeda, Joseph G. Gleeson   +19 more
wiley   +1 more source

Involvement of Primary Motor Cortex in Motor Imagery: A Neuromagnetic Study

NeuroImage, 1997
Functional brain imaging studies have indicated that several cortical and subcortical areas active during actual motor performance are also active during imagination or mental rehearsal of movements. Recent evidence shows that the primary motor cortex may also be involved in motor imagery.
Riitta Hari, Stephan Salenius, Veikko Jousmäki, Alfons Schnitzler, Riitta Salmelin   +4 more
openaire   +2 more sources

CNS Mitochondria‐Derived Vesicle in Blood: Potential Biomarkers for Brain Mitochondria Dysfunction

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Mitochondrial dysfunction is a hallmark of neurodegenerative diseases like Alzheimer's (AD) and Parkinson's (PD). Our goal was to develop practical, noninvasive methods to assess mitochondrial status through the detection of mitochondria‐derived vesicles (MDVs).
Qi Liu, Wentao Chen, Yahong Wu, Zhen Guo, Jun Chen, Chen Tian, Pan Wang, Shaopeng Zeng, Bin Xu, Jing Duan, Shilong Han, Xiao Xiong, Jing Zhang   +12 more
wiley   +1 more source

A Framework for Exploring Non-Linear Functional Connectivity and Causality in the Human Brain: Mutual Connectivity Analysis (MCA) of Resting-State Functional MRI with Convergent Cross-Mapping and Non-Metric Clustering [PDF]

arXiv, 2014
We present a computational framework for analysis and visualization of non-linear functional connectivity in the human brain from resting state functional MRI (fMRI) data for purposes of recovering the underlying network community structure and exploring causality between network components.
arxiv