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Frontiers in Neurology

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https://www.readbyqxmd.com/read/28223963/corrigendum-feasibility-and-diagnostic-accuracy-of-ischemic-stroke-territory-recognition-based-on-two-dimensional-projections-of-three-dimensional-diffusion-mri-data
#1
Jana Katharina Wrosch, Bastian Volbers, Philipp Gölitz, Daniel Frederic Gilbert, Stefan Schwab, Arnd Dörfler, Johannes Kornhuber, Teja Wolfgang Groemer
[This corrects the article on p. 239 in vol. 6, PMID: 26635717.].
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28223962/molecular-mechanisms-in-mood-regulation-involving-the-circadian-clock
#2
REVIEW
Urs Albrecht
The circadian system coordinates activities and functions in cells and tissues in order to optimize body functions in anticipation to daily changes in the environment. Disruption of the circadian system, due to irregular lifestyle such as rotating shift work, frequent travel across time-zones, or chronic stress, is correlated with several diseases such as obesity, cancer, and neurological disorders. Molecular mechanisms linking the circadian clock with neurological functions have been uncovered suggesting that disruption of the clock may be critically involved in the development of mood disorders...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28220104/systems-biology-derived-discoveries-of-intrinsic-clocks
#3
REVIEW
Arthur Millius, Hiroki R Ueda
A systems approach to studying biology uses a variety of mathematical, computational, and engineering tools to holistically understand and model properties of cells, tissues, and organisms. Building from early biochemical, genetic, and physiological studies, systems biology became established through the development of genome-wide methods, high-throughput procedures, modern computational processing power, and bioinformatics. Here, we highlight a variety of systems approaches to the study of biological rhythms that occur with a 24-h period-circadian rhythms...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28220103/hippocampal-damage-and-atrophy-secondary-to-status-epilepticus-in-a-patient-with-schizophrenia
#4
Elaine Keiko Fujisao, Nathalia Raquel Cristaldo, Aline Marques da Silva Braga, Paulina Rodrigues Cunha, Seizo Yamashita, Luiz Eduardo Betting
A 59-year-old man was admitted with respiratory tract infection, compromised conscience and generalized tonic-clonic seizures. His medical history included schizophrenia diagnosis, for which he had been being treated since he was 27 years old. EEG disclosed non-convulsive status epilepticus. A magnetic resonance image (MRI) acquired 3 days later showed increased left hippocampal volume with hyperintensity on T2-weighted and FLAIR sequences. After being treated with antibiotics and antiepileptic medications, the patient's condition improved...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28217106/effect-of-noisy-galvanic-vestibular-stimulation-on-ocular-vestibular-evoked-myogenic-potentials-to-bone-conducted-vibration
#5
Shinichi Iwasaki, Shotaro Karino, Teru Kamogashira, Fumiharu Togo, Chisato Fujimoto, Yoshiharu Yamamoto, Tatsuya Yamasoba
OBJECTIVE: Galvanic vestibular stimulation (GVS) delivered as zero-mean current noise (noisy GVS) has been shown to improve static and dynamic postural stability probably by enhancing vestibular information. The purpose of this study was to examine the effect of an imperceptible level noisy GVS on ocular vestibular-evoked myogenic potentials (oVEMPs) in response to bone-conducted vibration (BCV). MATERIALS AND METHODS: oVEMPs to BCV were measured during the application of white noise GVS with an amplitude ranging from 0 to 300 µA [in root mean square (RMS)] in 20 healthy subjects...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28217105/how-many-dystonias-clinical-evidence
#6
REVIEW
Alberto Albanese
Literary reports on dystonia date back to post-Medieval times. Medical reports are instead more recent. We review here the early descriptions and the historical establishment of a consensus on the clinical phenomenology and the diagnostic features of dystonia syndromes. Lumping and splitting exercises have characterized this area of knowledge, and it remains largely unclear how many dystonia types we are to count. This review describes the history leading to recognize that focal dystonia syndromes are a coherent clinical set encompassing cranial dystonia (including blepharospasm), oromandibular dystonia, spasmodic torticollis, truncal dystonia, writer's cramp, and other occupational dystonias...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28217104/priming-neural-circuits-to-modulate-spinal-reflex-excitability
#7
Stephen P Estes, Jennifer A Iddings, Edelle C Field-Fote
While priming is most often thought of as a strategy for modulating neural excitability to facilitate voluntary motor control, priming stimulation can also be utilized to target spinal reflex excitability. In this application, priming can be used to modulate the involuntary motor output that often follows central nervous system injury. Individuals with spinal cord injury (SCI) often experience spasticity, for which antispasmodic medications are the most common treatment. Physical therapeutic/electroceutic interventions offer an alternative treatment for spasticity, without the deleterious side effects that can accompany pharmacological interventions...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28210239/flow-diversion-for-the-treatment-of-mca-bifurcation-aneurysms-a-single-centre-experience
#8
Pervinder Bhogal, Muhammad AlMatter, Hansjörg Bäzner, Oliver Ganslandt, Hans Henkes, Marta Aguilar Pérez
BACKGROUND: Intracranial aneurysms located at the bifurcation of the middle cerebral artery (MCA) can often be challenging for the neurointerventionalist. We aimed to evaluate the efficacy and safety of flow diverting stents (FDS) in the treatment of these aneurysms. MATERIALS AND METHODS: We retrospectively reviewed our prospectively maintained database to collect information for all patients with unruptured saccular bifurcation MCA aneurysms treated with FDS between January 2010 and January 2016...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28203222/unexpected-death-of-a-child-with-complex-febrile-seizures-pathophysiology-similar-to-sudden-unexpected-death-in-epilepsy
#9
Brian J Dlouhy, Michael A Ciliberto, Christina L Cifra, Patricia A Kirby, Devin L Shrock, Marcus Nashelsky, George B Richerson
Febrile seizures are usually considered relatively benign. Although some cases of sudden unexplained death in childhood have a history of febrile seizures, no documented case of febrile seizure-induced death has been reported. Here, we describe a child with complex febrile seizures who died suddenly and unexpectedly after a suspected seizure while in bed at night during the beginning phases of sleep. She was resuscitated and pronounced brain dead 2 days later at our regional medical center. Autopsy revealed multiorgan effects of hypoperfusion and did not reveal an underlying (precipitating) disease, injury, or toxicological cause of death...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28203221/the-grand-challenge-in-cranial-pain-from-migraine-to-cranial-neuralgias-understanding-differences-and-similarities-to-advance-knowledge-and-management
#10
EDITORIAL
https://www.readbyqxmd.com/read/28203220/proof-of-concept-of-an-online-emg-based-decoding-of-hand-postures-and-individual-digit-forces-for-prosthetic-hand-control
#11
Alycia Gailey, Panagiotis Artemiadis, Marco Santello
INTRODUCTION: Options currently available to individuals with upper limb loss range from prosthetic hands that can perform many movements, but require more cognitive effort to control, to simpler terminal devices with limited functional abilities. We attempted to address this issue by designing a myoelectric control system to modulate prosthetic hand posture and digit force distribution. METHODS: We recorded surface electromyographic (EMG) signals from five forearm muscles in eight able-bodied subjects while they modulated hand posture and the flexion force distribution of individual fingers...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28197125/rna-interference-of-human-%C3%AE-synuclein-in-mouse
#12
Young-Cho Kim, Adam Miller, Livia C R F Lins, Sang-Woo Han, Megan S Keiser, Ryan L Boudreau, Beverly L Davidson, Nandakumar S Narayanan
α-Synuclein is postulated to play a key role in the pathogenesis of Parkinson's disease (PD). Aggregates of α-synuclein contribute to neurodegeneration and cell death in humans and in mouse models of PD. Here, we use virally mediated RNA interference to knockdown human α-synuclein in mice. We used an siRNA design algorithm to identify eight siRNA sequences with minimal off-targeting potential. One RNA-interference sequence (miSyn4) showed maximal protein knockdown potential in vitro. We then designed AAV vectors expressing miSyn4 and injected them into the mouse substantia nigra...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28194135/inaccurate-saccades-and-enhanced-vestibulo-ocular-reflex-suppression-during-combined-eye-head-movements-in-patients-with-chronic-neck-pain-possible-implications-for-cervical-vertigo
#13
Janine L Johnston, Pierre M Daye, Glen T D Thomson
BACKGROUND: The primate ocular motor system is designed to acquire peripheral targets of interest by coordinating visual, vestibular, and neck muscle activation signals. The vestibulo-ocular reflex (VOR) is greatly reduced at the onset of large eye-head (gaze) saccades and resumes before the end of the saccades to stabilize eye-in-orbit and ensure accurate target acquisition. Previous studies have relied on manipulating head movements in normal individuals to study VOR suppression and gaze kinematics...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28194134/chronic-trigemino-cardiac-reflex-an-underestimated-truth
#14
REVIEW
Tumul Chowdhury, Bernhard Schaller
The trigemino-cardiac reflex (TCR) is a brainstem reflex that manifests as adverse cardiorespiratory events upon the stimulation of sensory branches of the fifth cranial nerve. This reflex is mainly investigated in different neurosurgical procedures and intervention. This reflex is commonly considered as an acute and mild physiological response. On the other hand, more devastating and chronic nature of this reflex is largely underreported and unknown. Therefore, this article aims to provide the comprehensive understanding of the chronic form of TCR, its manifestations, and management by literature search...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28194133/current-and-emerging-potential-of-magnetoencephalography-in-the-detection-and-localization-of-high-frequency-oscillations-in-epilepsy
#15
REVIEW
Eleonora Tamilia, Joseph R Madsen, Patricia Ellen Grant, Phillip L Pearl, Christos Papadelis
Up to one-third of patients with epilepsy are medically intractable and need resective surgery. To be successful, epilepsy surgery requires a comprehensive preoperative evaluation to define the epileptogenic zone (EZ), the brain area that should be resected to achieve seizure freedom. Due to lack of tools and methods that measure the EZ directly, this area is defined indirectly based on concordant data from a multitude of presurgical non-invasive tests and intracranial recordings. However, the results of these tests are often insufficiently concordant or inconclusive...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28194132/molecular-imaging-markers-to-track-huntington-s-disease-pathology
#16
REVIEW
Heather Wilson, Rosa De Micco, Flavia Niccolini, Marios Politis
Huntington's disease (HD) is a progressive, monogenic dominant neurodegenerative disorder caused by repeat expansion mutation in the huntingtin gene. The accumulation of mutant huntingtin protein, forming intranuclear inclusions, subsequently leads to degeneration of medium spiny neurons in the striatum and cortical areas. Genetic testing can identify HD gene carriers before individuals develop overt cognitive, psychiatric, and chorea symptoms. Thus, HD gene carriers can be studied in premanifest stages to understand and track the evolution of HD pathology...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28194131/needs-and-requirements-of-modern-biobanks-on-the-example-of-dystonia-syndromes
#17
Ebba Lohmann, Thomas Gasser, Kathrin Grundmann
Dystonia belongs to a group of rare diseases (RDs) characterized by etiologic heterogeneity, affection often in childhood, severe and variable clinical manifestation. The burden of this disease is aggravated by the lack of effective and specific treatment. In the field of dystonia as in other RDs the number of available biospecimens is, in general, limited. Here, we report a new approach to collect clinical and genetic data in biospecimens maintained collaboratively by researchers and their associated institutions in a decentralized system...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28184211/disrupted-saccade-control-in-chronic-cerebral-injury-upper-motor-neuron-like-disinhibition-in-the-ocular-motor-system
#18
John-Ross Rizzo, Todd E Hudson, Andrew Abdou, Yvonne W Lui, Janet C Rucker, Preeti Raghavan, Michael S Landy
Saccades rapidly direct the line of sight to targets of interest to make use of the high acuity foveal region of the retina. These fast eye movements are instrumental for scanning visual scenes, foveating targets, and, ultimately, serve to guide manual motor control, including eye-hand coordination. Cerebral injury has long been known to impair ocular motor control. Recently, it has been suggested that alterations in control may be useful as a marker for recovery. We measured eye movement control in a saccade task in subjects with chronic middle cerebral artery stroke with both cortical and substantial basal ganglia involvement and in healthy controls...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28179894/vestibulo-ocular-reflex-stabilization-after-vestibular-schwannoma-surgery-a-story-told-by-saccades
#19
Angel Batuecas-Caletrio, Jorge Rey-Martinez, Gabriel Trinidad-Ruiz, Eusebi Matiño-Soler, Santiago Santa Cruz-Ruiz, Angel Muñoz-Herrera, Nicolas Perez-Fernandez
OBJECTIVE: To evaluate vestibular compensation via measurement of the vestibulo-ocular reflex (VOR) following vestibular schwannoma surgery and its relationship with changes in saccades strategy after surgery. PATIENTS: Thirty-six consecutive patients with vestibular schwannomas, without brainstem compression, underwent surgical resection. Patients were recruited from University Hospital of Salamanca, Spain. METHODS: We assessed the age, sex, tumor size, degree of canalicular weakness, and preoperative video head impulse test (gain and saccade organization measured with PR score)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28167926/disrupted-causal-connectivity-anchored-in-the-posterior-cingulate-cortex-in-amnestic-mild-cognitive-impairment
#20
Hong Yang, Chengwei Wang, Yumei Zhang, Liming Xia, Zhan Feng, Deqiang Li, Shunliang Xu, Haiyan Xie, Feng Chen, Yushu Shi, Jue Wang
Amnestic mild cognitive impairment (aMCI) is a transitional stage between normal cognitive aging and Alzheimer's disease. Previous studies have found that neuronal activity and functional connectivity impaired in many functional networks, especially in the default mode network (DMN), which is related to significantly impaired cognitive and memory functions in aMCI patients. However, few studies have focused on the effective connectivity of the DMN and its subsystems in aMCI patients. The posterior cingulate cortex (PCC) is considered a crucial region in connectivity of the DMN and its key subsystem...
2017: Frontiers in Neurology
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