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Functional Neurology

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https://www.readbyqxmd.com/read/28380325/in-the-face-of-pain-there-are-no-heroes-an-open-letter-to-the-members-of-the-european-parliament-about-ensuring-in-the-whole-europe-high-quality-care-research-equitable-employment-opportunities-and-socio-economic-support-for-cluster-headache-ch-pati
#1
https://www.readbyqxmd.com/read/28380324/a-15-year-epileptogenic-period-after-perinatal-brain-injury
#2
F Pisani, E Pavlidis, C Facini, C La Morgia, C Fusco, G Cantalupo
Seizures are a frequent acute neurological event in the neonatal period. Up to 12 to 18% of all seizures in newborns are due to perinatal stroke and up to 39% of affected children can then develop epilepsy in childhood. We report the case of a young patient who presented stroke-related seizures in the neonatal period and then developed focal symptomatic epilepsy at 15 years of age, and in whom the epileptic focus was found to co-localize with the site of his ischemic brain lesion. Such a prolonged silent period before onset of remote symptomatic epilepsy has not previously been reported...
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/28380323/a-retrospective-analysis-of-254-acute-stroke-cases-admitted-to-two-university-hospitals-in-beirut-classification-and-associated-factors
#3
N Lahoud, Marie-Helene Abbas, Pascale Salameh, N Saleh, Samer Abes, Hassan Hosseini, Souheil Gebeily
Lebanon is a developing country where the prevalence of stroke subtypes and their correlation with risk factors have not been studied, even though stroke management is an ongoing major national healthcare challenge. In a retrospective study conducted in two university hospitals, data were collected on all stroke cases admitted in 2012 and 2013. Ischemic strokes were then classified according to a modified TOAST classification. A total of 254 inpatients (mean age 68.41 years ±13.34, 55.1% males) was included in the study; of these, 15% had had a hemorrhagic stroke and was therefore excluded...
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/28380322/vitamin-d-in-amyotrophic-lateral-sclerosis
#4
L Libonati, E Onesti, M C Gori, Mauro Ceccanti, C Cambieri, A Fabbri, V Frasca, M Inghilleri
Vitamin D supplementation has been proposed as a potential treatment to delay amyotrophic lateral sclerosis (ALS) progression. The aims of this study were to compare retrospectively vitamin D blood levels in ALS patients with those in healthy subjects; to correlate vitamin D blood levels with clinical functions in patients; and to evaluate whether administration of vitamin D could modify the clinical progression of the disease. Vitamin D blood levels were evaluated in 57ALS patients and in 57 healthy subjects...
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/28380321/gait-analysis-and-clinical-correlations-in-early-parkinson-s-disease
#5
M Pistacchi, M Gioulis, F Sanson, E De Giovannini, G Filippi, F Rossetto, S Zambito Marsala
The aim of our study was to identify and quantify spatiotemporal and kinematic gait parameters obtained by 3D gait analysis (GA) in a group of Parkinson's disease (PD) patients compared with healthy subjects in order to investigate whether early PD patients could present an abnormal gait pattern. Forty-four patients affected by early-stage PD compared with a control group were analyzed. All participants were evaluated with 3D GA in the gait laboratory. The greatest significance in temporal parameters was found in cadence (102...
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/28380320/reappraisal-of-the-f-m-amplitude-ratio-in-carpal-tunnel-syndrome
#6
F Ginanneschi, M Mondelli, A Aretini, Alessandro Rossi
The F-wave/M-wave amplitude (F/M-amp) ratio has been shown to be increased in peripheral neuropathies, provided the maximum M-wave is relatively preserved. Reduced M-wave amplitudes and central facilitation of antidromically-induced reactivation of the anterior horn cells' axon hillocks (F-wave) are believed to contribute to higher F/M-amp ratios. The present study was undertaken to re-evaluate mechanisms responsible for higher F/M-amp ratios in carpal tunnel syndrome (CTS). We enrolled 232 cases affected by CTS and 108 controls...
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/28380319/the-coefficient-of-friction-in-parkinson-s-disease-gait
#7
Ana Kleiner, M Galli, M Franceschini, M F De Pandis, F Stocchi, G Albertini, Ricardo Machado Leite de Barros
This study aimed to characterize the coefficient of friction (COF) curves of patients with Parkinson's disease (PD) during barefoot gait and to evaluate the relationships between this variable and functional scales. Twenty-two subjects with PD (ON phase of levodopa) and 22 healthy subjects participated in this study. The participants walked barefoot along a pathway that went over two force plates embedded in the floor of the data collection room. The instantaneous COF was calculated as the ratio between the horizontal and vertical components of the ground reaction forces...
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/28380318/recent-advances-in-the-molecular-genetics-of-frontotemporal-lobar-degeneration
#8
REVIEW
Innocenzo Rainero, E Rubino, A Michelerio, F D'Agata, Salvatore Gentile, Lorenzo Pinessi
The term frontotemporal lobar degeneration (FTLD) describes a spectrum of neurodegenerative disorders associated with deposition of misfolded proteins in the frontal and temporal lobes. Up to 40% of FTLD patients reports a family history of neurodegeneration, and approximately 1/3 of familial cases shows an autosomal dominant pattern of inheritance of the phenotype. Over the past two decades, several causative and susceptibility genes for FTLD have been discovered, supporting the notion that genetic factors are important contributors to the disease processes...
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/28380317/back-to-the-future-30th-anniversary-of-deep-brain-stimulation-for-parkinson-s-disease
#9
EDITORIAL
N G Pozzi, Claudio Pacchetti
No abstract text is available yet for this article.
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/27976608/network-functional-connectivity-and-whole-brain-functional-connectomics-to-investigate-cognitive-decline-in-neurodegenerative-conditions
#10
O Dipasquale, Mara Cercignani
Non-invasive mapping of brain functional connectivity (FC) has played a fundamental role in neuroscience, and numerous scientists have been fascinated by its ability to reveal the brain's intricate morphology and functional properties. In recent years, two different techniques have been developed that are able to explore FC in pathophysiological conditions and to provide simple and non-invasive biomarkers for the detection of disease onset, severity and progression. These techniques are independent component analysis, which allows a network-based functional exploration of the brain, and graph theory, which provides a quantitative characterization of the whole-brain FC...
December 15, 2016: Functional Neurology
https://www.readbyqxmd.com/read/27976607/the-challenge-of-in-vivo-tissue-characterization-connectivity-and-big-data
#11
C Gandini Wheeler-Kingshott
No abstract text is available yet for this article.
December 15, 2016: Functional Neurology
https://www.readbyqxmd.com/read/27938528/modeling-white-matter-microstructure
#12
T Duval, N Stikov, J Cohen-Adad
Quantitative magnetic resonance imaging can be combined with advanced biophysical models to measure microstructural features of white matter. Non-invasive microstructural imaging has the potential to revolutionize neuroscience, and acquiring these measures in clinically feasible times would greatly improve patient monitoring and clinical studies of drug efficacy. However, a good understanding of microstructural imaging techniques is essential to set realistic expectations and to prevent over-interpretation of results...
December 12, 2016: Functional Neurology
https://www.readbyqxmd.com/read/27900929/main-effects-and-interactions-of-cerebral-hemispheres-gender-and-age-in-the-calculation-of-volumes-and-asymmetries-of-selected-structures-of-episodic-memory
#13
Rocio Ramirez-Carmona, Haydee Guadalupe Garcia-Lazaro, Brenda Dominguez-Corrales, Erika Aguilar-Castañeda, Ernesto Roldan-Valadez
The aim of this study was to clarify the influence of anatomical (cerebral hemisphere) and demographic (age and gender) variables on the gray matter (GM) volumes and volumetric asymmetry indices (VAIs) of selected structures involved in episodic memory. A cross-sectional study was performed in 47 healthy volunteers. Neuropsychological evaluation revealed similar IQs across the sample. Using SPM-based software, brain segmentation, labeling and volume measurements of the hippocampus, amygdala, middle temporal gyrus and parahippocampal gyrus were performed in each cerebral hemisphere...
November 30, 2016: Functional Neurology
https://www.readbyqxmd.com/read/28072386/main-effects-and-interactions-of-cerebral-hemispheres-gender-and-age-in-the-calculation-of-volumes-and-asymmetries-of-selected-structures-of-episodic-memory
#14
Rocio Ramirez-Carmona, Haydee Guadalupe Garcia-Lazaro, Brenda Dominguez-Corrales, Erika Aguilar-Castañeda, Ernesto Roldan-Valadez
The aim of this study was to clarify the influence of anatomical (cerebral hemisphere) and demographic (age and gender) variables on the gray matter (GM) volumes and volumetric asymmetry indices (VAIs) of selected structures involved in episodic memory. A cross-sectional study was performed in 47 healthy volunteers. Neuropsychological evaluation revealed similar IQs across the sample. Using SPM-based software, brain segmentation, labeling and volume measurements of the hippocampus, amygdala, middle temporal gyrus and parahippocampal gyrus were performed in each cerebral hemisphere...
October 2016: Functional Neurology
https://www.readbyqxmd.com/read/28072385/connectivity-measures-in-the-poffenberger-paradigm-indicate-hemispheric-asymmetries
#15
N Erbil, Suha Yagcioglu
The Poffenberger paradigm is a well-known measure of interhemispheric transfer delays, calculated on the basis of the crossed vs uncrossed reaction time difference (CUD). However, the proper interpretation of CUD is extensively debated in the literature. In this study we used connectivity measures in an attempt to interpret CUD from the perspective of functional connectivity. Accordingly, we tried to define functional couplings in the Poffenberger paradigm; we used a simple choice version of the paradigm, and included a stimulation only (SO) condition for comparison...
October 2016: Functional Neurology
https://www.readbyqxmd.com/read/28072384/impact-of-cerebellar-atrophy-on-cortical-gray-matter-and-cerebellar-peduncles-as-assessed-by-voxel-based-morphometry-and-high-angular-resolution-diffusion-imaging
#16
Michael Dayan, G Olivito, M Molinari, Mara Cercignani, Marco Bozzali, M Leggio
In recent years the cerebellum has been attributed amore important role in higher-level functions than previously believed. We examined a cohort of patients suffering from cerebellar atrophy resulting in ataxia, with two main objectives: first to investigate which regions of the cerebrum were affected by the cerebellar degeneration, and second to assess whether diffusion magnetic resonance imaging (dMRI) metrics within the medial (MCP) and superior cerebellar peduncle (SCP) - namely fractional anisotropy (FA) and radial diffusivity (RD) - could be used as a biomarker in patients with this condition...
October 2016: Functional Neurology
https://www.readbyqxmd.com/read/28072383/reconstructing-contralateral-fiber-tracts-methodological-aspects-of-cerebello-thalamocortical-pathway-reconstruction
#17
Fulvia Palesi, Jacques-Donald Tournier, F Calamante, Nils Muhlert, Gloria Castellazzi, Declan Chard, E D'Angelo, Claudia Gandini Wheeler-Kingshott
The identification of pathways connecting the cerebral cortex with subcortical structures is critical to understanding how large-scale brain networks operate. The cerebellum, for example, is known to project numerous axonal bundles to thecerebral cortex passing through the thalamus. This paper focuses on the technical details of cerebello-thalamo-cortical pathway reconstruction using advanced diffusion MRI techniques in humans in vivo. Pathways reconstructed using seed/target placement on super-resolution maps, created with track density imaging (TDI), were compared with those reconstructed by defining regions of interest (ROIs) on non-diffusion weighted images (b0)...
October 2016: Functional Neurology
https://www.readbyqxmd.com/read/28072382/modeling-white-matter-microstructure
#18
REVIEW
T Duval, N Stikov, J Cohen-Adad
Quantitative magnetic resonance imaging can be combined with advanced biophysical models to measure microstructural features of white matter. Non-invasive microstructural imaging has the potential to revolutionize neuroscience, and acquiring these measures in clinically feasible times would greatly improve patient monitoring and clinical studies of drug efficacy. However, a good understanding of microstructural imaging techniques is essential to set realistic expectations and to prevent over-interpretation of results...
October 2016: Functional Neurology
https://www.readbyqxmd.com/read/28072381/magnetic-resonance-imaging-and-positron-emission-tomography-in-the-diagnosis-of-neurodegenerative-dementias
#19
REVIEW
A Del Sole, S Malaspina, Alberto Magenta Biasina
Neuroimaging, both with magnetic resonance imaging (MRI) and positron emission tomography (PET), has gained a pivotal role in the diagnosis of primary neurodegenerative diseases. These two techniques are used as biomarkers of both pathology and progression of Alzheimer's disease (AD) and to differentiate AD from other neurodegenerative diseases. MRI is able to identify structural changes including patterns of atrophy characterizing neurodegenerative diseases, and to distinguish these from other causes of cognitive impairment, e...
October 2016: Functional Neurology
https://www.readbyqxmd.com/read/28072380/network-functional-connectivity-and-whole-brain-functional-connectomics-to-investigate-cognitive-decline-in-neurodegenerative-conditions
#20
REVIEW
O Dipasquale, Mara Cercignani
Non-invasive mapping of brain functional connectivity (FC) has played a fundamental role in neuroscience, and numerous scientists have been fascinated by its ability to reveal the brain's intricate morphology and functional properties. In recent years, two different techniques have been developed that are able to explore FC in pathophysiological conditions and to provide simple and non-invasive biomarkers for the detection of disease onset, severity and progression. These techniques are independent component analysis, which allows a network-based functional exploration of the brain, and graph theory, which provides a quantitative characterization of the whole-brain FC...
October 2016: Functional Neurology
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