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https://www.readbyqxmd.com/read/28527387/analysis-of-electroencephalogram-characteristics-of-anti-nmda-receptor-encephalitis-patients-in-china
#1
Yan Zhang, Gang Liu, Meng Di Jiang, Li Ping Li, Ying Ying Su
OBJECTIVE: To explore the characteristics of electroencephalogram (EEG) in patients with anti-N-methyl-d-aspartate receptor (anti-NMDAR) encephalitis. METHODS: Anti-NMDAR encephalitis patients admitted to the Department of Neurology between January 2012 and June 2016 were enrolled. All patients underwent electroencephalogram (EEG) at least once in the disease peak stage, and received tumor screening, symptomatic therapy, and immunotherapy. Patients received outcome evaluation every 6months after the immunotherapy, and modified Rankin scale (mRS) 0-2 was defined as favorable outcome...
May 4, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28527315/longitudinal-decline-in-speech-production-in-parkinson-s-disease-spectrum-disorders
#2
Sharon Ash, Charles Jester, Collin York, Olga L Kofman, Rachel Langey, Amy Halpin, Kim Firn, Sophia Dominguez Perez, Lama Chahine, Meredith Spindler, Nabila Dahodwala, David J Irwin, Corey McMillan, Daniel Weintraub, Murray Grossman
We examined narrative speech production longitudinally in non-demented (n=15) and mildly demented (n=8) patients with Parkinson's disease spectrum disorder (PDSD), and we related increasing impairment to structural brain changes in specific language and motor regions. Patients provided semi-structured speech samples, describing a standardized picture at two time points (mean±SD interval=38±24months). The recorded speech samples were analyzed for fluency, grammar, and informativeness. PDSD patients with dementia exhibited significant decline in their speech, unrelated to changes in overall cognitive or motor functioning...
May 17, 2017: Brain and Language
https://www.readbyqxmd.com/read/28527269/-first-evidence-of-lymphocytic-choriomeningitis-virus-arenavirus-infection-in-mus-musculus-rodents-captured-in-the-urban-area-of-the-municipality-of-sincelejo-sucre-colombia
#3
Anais Castellar, Marco Guevara, Juan D Rodas, Andrés F Londoño, Esteban Arroyave, Francisco J Díaz, Silvana Levis, Pedro J Blanco
INTRODUCTION: The lymphocytic choriomeningitis virus is an Old World arenavirus that infects Mus musculus, and can cause congenital hydrocephalus, chorioretinitis and multisystemic failure in transplant human recipients. Although the disease has not been clinically diagnosed in Colombia yet, there have been reports of infection with the Pichindé virus in rodents from Cauca and Valle del Cauca departments, and with the Guanarito virus in rodents from Córdoba department. OBJECTIVE: To identify the lymphocytic choriomeningitis virus from Mus musculus captured in the municipality of Sincelejo...
April 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28527229/effects-of-interactive-metronome-training-on-upper-extremity-function-adl-and-qol-in-stroke-patients
#4
Ga-Hui Yu, Jae-Shin Lee, Su-Kyoung Kim, Tae-Hyun Cha
BACKGROUND: Rhythm and timing training is stimulation that substitutes for a damaged function controls muscular movement or temporal element, which has positive impacts on the neurological aspect and movement of the brain. OBJECTIVE: This study is to assess the changes caused by rhythm and timing training using an interactive metronome (IM) on upper extremity function, ADL and QOL in stroke patients. METHODS: In order to assess the effects of IM training, a group experiment was conducted on 30 stroke patients...
May 19, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28527224/does-assist-as-needed-upper-limb-robotic-therapy-promote-participation-in-repetitive-activity-based-motor-training-in-sub-acute-stroke-patients-with-severe-paresis
#5
Anne-Gaëlle Grosmaire, Christophe Duret
BACKGROUND: Repetitive, active movement-based training promotes brain plasticity and motor recovery after stroke. Robotic therapy provides highly repetitive therapy that reduces motor impairment. However, the effect of assist-as-needed algorithms on patient participation and movement quality is not known. OBJECTIVE: To analyze patient participation and motor performance during highly repetitive assist-as-needed upper limb robotic therapy in a retrospective study...
May 19, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28527191/understanding-how-a-sport-helmet-protects-the-head-from-closed-injury-by-virtual-impact%C3%A2-tests
#6
Yunhua Luo, Zhaoyang Liang
Understanding how a helmet protects the head, especially the soft brain tissues, is the prerequisite for improving helmet design. Intracranial pressure and stresses/strains in the brain tissues are the direct indicators of traumatic brain injury and they can be used to measure helmet performance. In this study, the effects of helmet design parameters such as the helmet shell stiffness, liner compliance and thickness on the brain injury indicators were investigated by virtual impact tests. A finite element head model (FEHM) was first constructed from medical images; a personally-fitted helmet made of composite material and foam was virtually prototyped using geometric information extracted from the FEHM; a helmet-head finite element model was then assembled...
2017: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/28526931/reduced-amygdala-reactivity-and-impaired-working-memory-during-dissociation-in-borderline-personality-disorder
#7
Annegret Krause-Utz, Dorina Winter, Friederike Schriner, Chui-De Chiu, Stefanie Lis, Philip Spinhoven, Martin Bohus, Christian Schmahl, Bernet M Elzinga
Affective hyper-reactivity and impaired cognitive control of emotional material are core features of borderline personality disorder (BPD). A high percentage of individuals with BPD experience stress-related dissociation, including emotional numbing and memory disruptions. So far little is known about how dissociation influences the neural processing of emotional material in the context of a working memory task in BPD. We aimed to investigate whole-brain activity and amygdala functional connectivity (FC) during an Emotional Working Memory Task (EWMT) after dissociation induction in un-medicated BPD patients compared to healthy controls (HC)...
May 19, 2017: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/28526896/signal-intensity-at-unenhanced-t1-weighted-magnetic-resonance-in-the-globus-pallidus-and-dentate-nucleus-after-serial-administrations-of-a-macrocyclic-gadolinium-based-contrast-agent-in-children
#8
Maria Camilla Rossi Espagnet, Bruno Bernardi, Luca Pasquini, Lorenzo Figà-Talamanca, Paolo Tomà, Antonio Napolitano
BACKGROUND: Few studies have been conducted on the relations between T1-weighted signal intensity changes in the pediatric brain following gadolinium-based contrast agent (GBCA) exposure. OBJECTIVE: The purpose of this study is to investigate the effect of multiple administrations of a macrocyclic GBCA on signal intensity in the globus pallidus and dentate nucleus of the pediatric brain on unenhanced T1-weighted MR images. MATERIALS AND METHODS: This retrospective study included 50 patients, mean age: 8 years (standard deviation: 4...
May 19, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28526642/-asleep-deep-brain-stimulation-surgery-a-critical-review-of-the-literature
#9
REVIEW
Tsinsue Chen, Zaman Mirzadeh, Francisco A Ponce
OBJECTIVE: Although performing deep brain stimulation (DBS) with the patient under general anesthesia without microelectrode recording (MER) or intraoperative test stimulation (ITS) for movement disorders ("asleep" DBS) has become increasingly popular, its feasibility is based on the untested assumption that stereotactic accuracy correlates with positive clinical outcomes. To investigate outcomes after asleep DBS without MER or neurophysiological testing, we reviewed the medical literature on the topic...
May 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28526578/barrel-cortex-what-is-it-good-for
#10
REVIEW
Maik C Stüttgen, Cornelius Schwarz
The rodent whisker system, with barrel cortex as its most prominent structure, has evolved into a powerful model system to study sensory processing. However, despite the vast amount of data collected on barrel cortex neural activity patterns, as well as its circuitry and plasticity, the precise behavioral and cognitive operations for which this structure is needed are still elusive. Proposed functions of barrel cortex include detection, discrimination, coordination of whisker movements during exploratory locomotion or active touch, and associative learning...
May 16, 2017: Neuroscience
https://www.readbyqxmd.com/read/28526574/functional-thalamocortical-connectivity-development-and-alterations-in-preterm-infants-during-the-neonatal-period
#11
Yue Cai, Xiushuang Wu, Zihui Su, Yuan Shi, Jia-Hong Gao
The thalamus is one of the most commonly affected brain regions in preterm infants, particularly in infants with white matter lesions (WML). The aim of this paper is to explore the development and alterations of the functional thalamocortical connectivity in preterm infants with and without punctate white matter lesions (PWMLs) during the period before term equivalent age (TEA). In this study, twenty-two normal preterm infants (NP), twenty-two preterm infants with PWMLs and thirty-one full-term control infants (FT) were enrolled...
May 16, 2017: Neuroscience
https://www.readbyqxmd.com/read/28526432/quantitative-susceptibility-mapping-using-principles-of-echo-shifting-with-a-train-of-observations-sequence-on-1-5t-mri
#12
Hirohito Kan, Nobuyuki Arai, Harumasa Kasai, Hiroshi Kunitomo, Yasujiro Hirose, Yuta Shibamoto
PURPOSE: To evaluate the accuracy of susceptibility estimated from the principles of echo shifting with a train of observations (PRESTO) sequence using a 1.5T MRI system, we conducted experiments on the human brain using the PRESTO sequence and compared our results with the susceptibility obtained from spoiled gradient-recalled echo (GRE) sequence with flow compensation using quantitative susceptibility mapping (QSM) reconstruction. MATERIALS AND METHODS: Experiments on the human brain were conducted on 12 healthy volunteers (27±4years) using PRESTO and spoiled GRE sequences on a 1...
May 16, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28526235/zero-echo-time-mri-only-treatment-planning-for-radiation-therapy-of-brain-tumors-after-resection
#13
C Boydev, B Demol, D Pasquier, H Saint-Jalmes, G Delpon, N Reynaert
Using magnetic resonance imaging (MRI) as the sole imaging modality for patient modeling in radiation therapy (RT) is a challenging task due to the need to derive electron density information from MRI and construct a so-called pseudo-computed tomography (pCT) image. We have previously published a new method to derive pCT images from head T1-weighted (T1-w) MR images using a single-atlas propagation scheme followed by a post hoc correction of the mapped CT numbers using local intensity information. The purpose of this study was to investigate the performance of our method with head zero echo time (ZTE) MR images...
May 16, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28525877/functional-network-connectivity-predicts-treatment-outcome-during-treatment-of-nicotine-use-disorder
#14
Claire E Wilcox, Vince D Calhoun, Srinivas Rachakonda, Eric D Claus, Rae A Littlewood, Jessica Mickey, Pamela B Arenella, Kent E Hutchison
Altered resting state functional connectivity (rsFC) and functional network connectivity (FNC), which is a measure of coherence between brain networks, may be associated with nicotine use disorder (NUD). We hypothesized that higher connectivity between insula and 1) dorsal anterior cingulate cortex (dACC) and 2) dorsolateral prefrontal cortex (dlPFC) would predict better treatment outcomes. We also performed an exploratory analysis of the associations between FNC values between additional key frontal and striatal regions and treatment outcomes...
April 30, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28525569/comparative-effects-of-methylphenidate-modafinil-and-mdma-on-response-inhibition-neural-networks-in-healthy-subjects
#15
André Schmidt, Felix Müller, Patrick C Dolder, Yasmin Schmid, Davide Zanchi, Matthias E Liechti, Stefan Borgwardt
Background: Psychostimulants such as methylphenidate (MPH) and modafinil are increasingly used by healthy people for cognitive enhancement purposes, whereas the acute effect of 3,4-methylenedioxymethamphetamine (MDMA, ecstasy) on cognitive functioning in healthy subjects remains unclear. This study directly compared the acute effects of MPH, modafinil and MDMA on the neural mechanisms underlying response inhibition in healthy subjects. Methods: Using a double-blind within-subject placebo-controlled cross-over design, MPH, modafinil and MDMA were administrated to 21 healthy subjects, while performing a Go/No-Go event-related functional magnetic resonance imaging task to assess brain activation during motor response inhibition...
May 19, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28525544/bistability-causality-and-complexity-in-cortical-networks-an-in-vitro-perturbational-study
#16
Mattia D'Andola, Beatriz Rebollo, Adenauer G Casali, Julia F Weinert, Andrea Pigorini, Rosa Villa, Marcello Massimini, Maria V Sanchez-Vives
Measuring the spatiotemporal complexity of cortical responses to direct perturbations provides a reliable index of the brain's capacity for consciousness in humans under both physiological and pathological conditions. Upon loss of consciousness, the complex pattern of causal interactions observed during wakefulness collapses into a stereotypical slow wave, suggesting that cortical bistability may play a role. Bistability is mainly expressed in the form of slow oscillations, a default pattern of activity that emerges from cortical networks in conditions of functional or anatomical disconnection...
May 19, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28524543/snapshot-whole-brain-t1-relaxometry-using-steady-state-prepared-spiral-multislice-variable-flip-angle-imaging
#17
Rahel Heule, Josef Pfeuffer, Oliver Bieri
PURPOSE: Variable flip angle (VFA) imaging is widely used for whole-brain T1 quantification. Because of the requirement to acquire at least two sets of MR images at different flip angles, VFA relaxometry is relatively slow. Here, whole-brain VFA T1 mapping at 1.5 T is accelerated by using efficient spiral non-Cartesian imaging METHODS: To quantify T1 in the human brain, radiofrequency spoiled gradient-echo imaging is performed at two optimized flip angles using an interleaved 2D multislice sequence with high spoiling efficiency...
May 19, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28524272/frontal-sinus-development-and-juvenile-age-estimation
#18
Kaitlin Moore, Ann Ross
Assessment of development is an important component of age estimation in juveniles. One area that has not been fully investigated as a possible aging method is the development of the frontal sinus. The frontal sinuses form when the ectocranial table of the frontal bone separates from the endocranial table forming an air pocket in the bone. The endocranial table ceases growth with the brain, while the ectocranial table is displaced anteriorly as the facial bones continue growth. In order to examine growth and the utility of the frontal sinuses for age estimation, 392 radiographs were examined (♀=159 and ♂=233) from the Juvenile Radiograph Database at North Carolina State University and the Patricia Database from Mercyhurst University...
May 19, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28524223/-infantile-epileptic-encephalopathies-what-matters-is-genetics
#19
J J Garcia-Penas, M Jimenez-Legido
INTRODUCTION: Epileptic encephalopathies in infancy are defined as conditions where the sustained epileptic activity itself may contribute to the severe neurological and cognitive impairment. These epileptic encephalopathies include Ohtahara syndrome, early myoclonic epileptic encephalopathy, West syndrome, Dravet syndrome, and malignant migrating epilepsy in infancy. These syndromes result from identifiable primary causes, such as structural, neurodegenerative, metabolic, or genetic defects...
May 17, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28524211/-rehabilitation-treatment-in-child-and-youth-patients-with-acquired-brain-injury
#20
M T Varas-Arias, S Rodriguez-Palero
Brain injury is one of the most frequent causes of death and disability in the child and adolescent. The improvement in patient care in the acute moment and the evolution of health care has meant and increase in the survival of these patients and also of the sequelae. Physical, cognitive-behavioral or organic symptoms are usually. The second is being one of the most frequent and most limiting in these patients. The brain injury affects the patient but involves the whole family because of the disability and the dependence it entails...
May 17, 2017: Revista de Neurologia
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