Results 11 to 20 of about 13,686 (260)

A rare case of ispilateral hemiparesis in a patient with uncrossed pyramidal tract shown by tractography

Radiology Case Reports
This article presents a unique case of ipsilateral hemiparesis in a 66-year-old individual, contrary to the conventional understanding of supratentorial strokes causing contralateral neurological deficits.
Manal Jidal, MD, Kenza Horache, MD, Meriem Fikri, MD PhD, Najwa El Kettani, MD PhD, Mohammed Jiddane, MD PhD, Firdaous Touarsa, MD PhD   +5 more
doaj   +2 more sources

Axonal loss in major sensorimotor tracts is associated with impaired motor performance in minimally disabled multiple sclerosis patients [PDF]

, 2021
Multiple sclerosis is a neuroinflammatory disease of the CNS that is associated with significant irreversible neuro-axonal loss, leading to permanent disability.
Jon O Cleary (9353261), Scott C Kolbe (6507182), Camille J Shanahan (10493138), Anneke van der Walt (293592), Trevor J Kilpatrick (10493144), Myrte Strik (9615762), Luis Cofre Lizama (9478430), Jeroen JG Geurts (5038775), Menno M Schoonheim (6005414), Frederique MC Boonstra (6507170), Rebecca Glarin (10493141), Mary P Galea (9630317)   +11 more
core   +4 more sources

Multiple sclerosis lesions in motor tracts from brain to cervical cord: spatial distribution and correlation with disability [PDF]

, 2020
International audienceDespite important efforts to solve the clinico-radiological paradox, correlation between lesion load and physical disability in patients with multiple sclerosis remains modest.
Edan, Gilles, Labauge, Pierre, Rocca, Maria, Maarouf, Adil, Ayrignac, Xavier, Carra Dallière, Clarisse, Reich, Daniel, Cohen-Adad, Julien, Filippi, Massimo, Callot, Virginie, Carra-Dalliere, Clarisse, Maranzano, Josefina, Ouellette, Russell, Rocca, Maria A., Bannier, Elise, Audoin, Bertrand, Stawiarz, Leszek, Valsasina, Paola, Talbott, Jason, Collongues, Nicolas, Reich, Daniel S., Hori, Masaaki, Bakshi, Rohit, Chu, Renxin, Chougar, Lydia, Badji, Atef, Lefeuvre, Jennifer, Granberg, Tobias, Gros, Charley, Galassi, Francesca, Kerbrat, Anne, Hillert, Jan, de Sèze, Jerome, Nair, Govind, Tachibana, Yasuhiko, Kamiya, Kouhei, Chouteau, Raphaël, Pelletier, Jean, Combès, Benoît   +38 more
core   +3 more sources

The motor cortex of the sheep: laminar organization, projections and diffusion tensor imaging of the intracranial pyramidal and extrapyramidal tracts [PDF]

, 2019
The laminar organization of the motor cortex of the sheep and other large domestic herbivores received scarce attention and is generally considered homologous to that of rodents and primates.
Bontempi, Pietro, Centelleghe C., Bontempi P., Centelleghe, Cinzia, Peruffo A., BONTEMPI, PAOLO, Bombardi C., Grisan, Enrico, Grandis A., Corain L., Cozzi, Bruno, Grisan E., Graïc, Jean-Marie, Corain, Livio, Cozzi B., Grandis, Annamaria, Graic J. -M., Peruffo, Antonella, Bombardi, Cristiano   +18 more
core   +3 more sources

Functional redundancy of the premotor network in hemispherotomy patients

Annals of Clinical and Translational Neurology, 2021
Objective Using multimodal imaging, we tested the hypothesis that patients after hemispherotomy recruit non‐primary motor areas and non‐pyramidal descending motor fibers to restore motor function of the impaired limb.
Conrad C. Prillwitz, Bastian David, Gottfried Schlaug, Thomas Deller, Johannes Schramm, Robert Lindenberg, Elke Hattingen, Bernd Weber, Rainer Surges, Christian E. Elger, Theodor Rüber   +10 more
doaj   +1 more source

Language Disorder and Polymicrogyria

Pediatric Neurology Briefs, 2008
The co-occurrence of developmental language disorder and reading impairment in members of three families with perisylvian polymicrogyria is reported from the State University of Campinas, and University of Sao Paulo, Brazil.
J Gordon Millichap
doaj   +1 more source

Clinically Feasible White Matter Fiber Tractography in Peritumoral Zones With Cerebral Vasogenic Edema. [PDF]

Magn Reson Med
ABSTRACT Purpose In diffusion MRI, vasogenic edema manifests as a major fraction of isotropic water that dilutes the anisotropic intra‐axonal portion of the signal. Many tractography algorithms mistake vasogenic edema for the white matter boundary and terminate tracking to prevent producing spurious streamlines.
Filipiak P, Shepherd TM, Clarke K, Ressa G, Placantonakis DG, Boada FE, Baete SH.   +6 more
europepmc   +2 more sources

Distance to white matter tracts is associated with deep brain stimulation motor outcome in Parkinson’s disease

, 2020
OBJECTIVE Deep brain stimulation (DBS) of the subthalamic nucleus (STN) alleviates motor symptoms in patients with Parkinson’s disease (PD). However, the underlying mechanism of tremor suppression is not well understood.
Prent, Naomi, Potters, Wouter V., Boon, Lennard I., Schuurman, P. Richard, de Bie, Rob M.A., Caan, Matthan W.A., van Rootselaar, Anne Fleur, van den Munckhof, Pepijn   +7 more
core   +2 more sources

The effects of corticospinal tract glioma on motor function evaluated by diffusion tensor imaging

Chinese Journal of Contemporary Neurology and Neurosurgery, 2018
Objective To evaluate the damage effect of glioma on corticospinal tract (CST) and motor function of lower extremities by using diffusion tensor imaging (DTI) and diffusion tensor tractography (DTT).
Xu-dong SHEN, Xin-hua XU, Min SONG, Xiang DENG, Gui-e LIU, Li-qiang LIAO, Gui-quan SHEN, Bo GAO   +7 more
doaj   +1 more source

Characteristics of the aberrant pyramidal tract in comparison with the pyramidal tract in the human brain [PDF]

BMC Neuroscience, 2011
Abstract Background The aberrant pyramidal tract (APT) refers to the collateral pathway of the pyramidal tract (PT) through the medial lemniscus in the midbrain and pons. Using diffusion tensor tractography (DTT), we investigated the characteristics of the APT in comparison with the PT in the normal human brain.
Kwon Yong, Kim Saeyoon, Chang Min, Son Su, Kwon Hyeok, Jang Sung   +5 more
openaire   +3 more sources