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Brain Sciences

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https://www.readbyqxmd.com/read/28726717/mini-review-of-controlled-cortical-impact-a-well-suited-device-for-concussion-research
#1
REVIEW
Nicole Osier, C Edward Dixon
Mild traumatic brain injury (mTBI) is increasingly recognized as a significant public health problem which warrants additional research. Part of the effort to understand mTBI and concussion includes modeling in animals. Controlled cortical impact (CCI) is a commonly employed and well-characterized model of experimental TBI that has been utilized for three decades. Today, several commercially available pneumatic- and electromagnetic-CCI devices exist as do a variety of standard and custom injury induction tips...
July 20, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28718840/bilinguals-working-memory-wm-advantage-and-their-dual-language-practices
#2
Eunju Yang
The present study investigates a possible working memory (WM) difference between monolingual and bilingual groups and explores the relationship between their WM advantage and language practices. A mixed methods design was employed for the study. To measure participants' WM, auditory and visual digit span tasks were conducted on the different language groups: 20 Korean near-monolinguals, and 40 Korean-English bilinguals with two different levels of second language (L2) proficiency. Bilinguals' daily language practices were explored through semi-structured interviews with eight bilinguals...
July 18, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28714935/sensory-and-physico-psychological-metaphor-comprehension-in-children-with-asd-a-preliminary-study-on-the-outcomes-of-a-treatment
#3
Sergio Melogno, Maria Antonietta Pinto, Gloria Di Filippo
Recent research into difficulties in figurative language in children with ASD highlighted that it is possible to devise training interventions to overcome these difficulties by teaching specific strategies. This study describes how children with ASD can improve their capability to explain metaphors with a treatment. Two types of metaphors, in the "X is Y" form, were addressed: sensory and physico-psychological. To face the difficulties posed by these metaphors, the adult taught two strategies: inserting the connective "is like" between "X" and "Y", which transforms the metaphor into a simile; comparing "X" and "Y" by means of thinking maps...
July 17, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28714891/structural-and-functional-neuroimaging-of-visual-hallucinations-in-lewy-body-disease-a-systematic-literature-review
#4
REVIEW
Stefania Pezzoli, Annachiara Cagnin, Oliver Bandmann, Annalena Venneri
Patients with Lewy body disease (LBD) frequently experience visual hallucinations (VH), well-formed images perceived without the presence of real stimuli. The structural and functional brain mechanisms underlying VH in LBD are still unclear. The present review summarises the current literature on the neural correlates of VH in LBD, namely Parkinson's disease (PD), and dementia with Lewy bodies (DLB). Following a systematic literature search, 56 neuroimaging studies of VH in PD and DLB were critically reviewed and evaluated for quality assessment...
July 15, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28708110/cognitive-changes-in-the-spinocerebellar-ataxias-due-to-expanded-polyglutamine-tracts-a-survey-of-the-literature
#5
REVIEW
Evelyn Lindsay, Elsdon Storey
The dominantly-inherited ataxias characterised by expanded polyglutamine tracts-spinocere bellar ataxias (SCAs) 1, 2, 3, 6, 7, 17, dentatorubral pallidoluysian atrophy (DRPLA) and, in part, SCA 8-have all been shown to result in various degrees of cognitive impairment. We survey the literature on the cognitive consequences of each disorder, attempting correlation with their published neuropathological, magnetic resonance imaging (MRI) and clinical features. We suggest several psychometric instruments for assessment of executive function, whose results are unlikely to be confounded by visual, articulatory or upper limb motor difficulties...
July 14, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28704978/evidences-from-rewarding-system-frn-and-p300-effect-in-internet-addiction-in-young-people-short-title-rewarding-system-and-eeg-in-internet-addiction
#6
Michela Balconi, Irene Venturella, Roberta Finocchiaro
The present research explored rewarding bias and attentional deficits in Internet addiction (IA) based on the IAT (Internet Addiction Test) construct, during an attentional inhibitory task (Go/NoGo task). Event-related Potentials (ERPs) effects (Feedback Related Negativity (FRN) and P300) were monitored in concomitance with Behavioral Activation System (BAS) modulation. High-IAT young participants showed specific responses to IA-related cues (videos representing online gambling and videogames) in terms of cognitive performance (decreased Response Times, RTs; and Error Rates, ERs) and ERPs modulation (decreased FRN and increased P300)...
July 12, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28704928/dynamic-hippocampal-and-prefrontal-contributions-to-memory-processes-and-representations-blur-the-boundaries-of-traditional-cognitive-domains
#7
REVIEW
Rachael D Rubin, Hillary Schwarb, Heather D Lucas, Michael R Dulas, Neal J Cohen
The hippocampus has long been known to be a critical component of the memory system involved in the formation and use of long-term declarative memory. However, recent findings have revealed that the reach of hippocampal contributions extends to a variety of domains and tasks that require the flexible use of cognitive and social behavior, including domains traditionally linked to prefrontal cortex (PFC), such as decision-making. In addition, the prefrontal cortex (PFC) has gained traction as a necessary part of the memory system...
July 12, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28698487/multiple-mild-traumatic-brain-injuries-are-associated-with-increased-rates-of-health-symptoms-and-gulf-war-illness-in-a-cohort-of-1990-1991-gulf-war-veterans
#8
Megan K Yee, Patricia A Janulewicz, Daniel R Seichepine, Kimberly A Sullivan, Susan P Proctor, Maxine H Krengel
Recent research demonstrated a relation between traumatic brain injury (TBI), health symptoms and diagnosis of Gulf War Illness (GWI) in Gulf War Veterans, but no study has examined the impact of multiple mild TBIs (mTBIs). A total of 229 male Gulf War Veterans from the Ft Devens Cohort were categorized by a number of mTBIs reported. One-way ANOVA and chi-square test of independence were used to test for differences in total reported health symptoms and diagnosis of chronic multisymptom illness (CMI) or Kansas GWI criteria, two of the most common case definitions of GWI...
July 9, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28698486/creativity-assessment-in-subjects-with-tourette-syndrome-vs-patients-with-parkinson-s-disease-a-preliminary-study
#9
Carlotta Zanaboni Dina, Mauro Porta, Christian Saleh, Domenico Servello
(1) Background: Literature suggests that high levels of dopamine are associated with creative thoughts. Tourette Syndrome (TS) patients have high dopamine levels, while Parkinson's Disease (PD) subjects have low dopamine levels. Consequently, TS individuals are supposed to have a major and PD patients less creative output. Moreover, dopamine medications may alter the level of creativity, and therefore Quality of Life, in both pathologies. (2) Methods: The aim of the study was to verify the hypothesis of TS patients having higher creative scores than PD patients...
July 9, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28686222/multiple-sclerosis-immunopathology-and-treatment-update
#10
REVIEW
Narges Dargahi, Maria Katsara, Theodore Tselios, Maria-Eleni Androutsou, Maximilian de Courten, John Matsoukas, Vasso Apostolopoulos
The treatment of multiple sclerosis (MS) has changed over the last 20 years. All immunotherapeutic drugs target relapsing remitting MS (RRMS) and it still remains a medical challenge in MS to develop a treatment for progressive forms. The most common injectable disease-modifying therapies in RRMS include β-interferons 1a or 1b and glatiramer acetate. However, one of the major challenges of injectable disease-modifying therapies has been poor treatment adherence with approximately 50% of patients discontinuing the therapy within the first year...
July 7, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28684673/localization-of-fibrinogen-in-the-vasculo-astrocyte-interface-after-cortical-contusion-injury-in-mice
#11
Nino Muradashvili, Suresh C Tyagi, David Lominadze
Besides causing neuronal damage, traumatic brain injury (TBI) is involved in memory reduction, which can be a result of alterations in vasculo-neuronal interactions. Inflammation following TBI is involved in elevation of blood content of fibrinogen (Fg), which is known to enhance cerebrovascular permeability, and thus, enhance its deposition in extravascular space. However, the localization of Fg in the extravascular space and its possible interaction with nonvascular cells are not clear. The localization of Fg deposition in the extravascular space was defined in brain samples of mice after cortical contusion injury (CCI) and sham-operation (control) using immunohistochemistry and laser-scanning confocal microscopy...
July 6, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28671557/p300-source-localization-contrasts-in-body-focused-repetitive-behaviors-and-tic-disorders
#12
Geneviève Sauvé, Simon Morand-Beaulieu, Kieron P O'Connor, Pierre J Blanchet, Marc E Lavoie
Tic disorders (TD) and body-focused repetitive behaviors (BFRB) have similar phenotypes that can be challenging to distinguish in clinical settings. Both disorders show high rates of comorbid psychiatric conditions, dysfunctional basal ganglia activity, atypical cortical functioning in the prefrontal and motor cortical regions, and cognitive deficits. Clinicians frequently confound the two disorders and it is important to find reliable objective methods to discriminate TD and BFRB. Neuropsychological tests and event-related potential (ERP) studies have yielded inconsistent results regarding a possible context updating deficit in TD and BFRB patients...
July 1, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28665314/subtitling-for-d-deaf-and-hard-of-hearing-children-current-practices-and-new-possibilities-to-enhance-language-development
#13
Ana Tamayo, Frederic Chaume
In order to understand and fully comprehend a subtitle, two parameters within the linguistic code of audiovisual texts are key in the processing of the subtitle itself, namely, vocabulary and syntax. Through a descriptive and experimental study, the present article explores the transfer of the linguistic code of audiovisual texts in subtitling for deaf and hard-of-hearing children in three Spanish TV stations. In the first part of the study, we examine current practices in Spanish TV captioning to analyse whether syntax and vocabulary are adapted to satisfy deaf children's needs and expectations regarding subtitle processing...
June 30, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28653979/hypermethylation-of-synphilin-1-alpha-synuclein-interacting-protein-sncaip-gene-in-the-cerebral-cortex-of-patients-with-sporadic-parkinson-s-disease
#14
Khashayar Dashtipour, Ali Tafreshi, Charles Adler, Thomas Beach, Xin Chen, Geidy Serrano, Stephanie Tashiro, Charles Wang
OBJECTIVE: To determine and compare DNA methylation patterns between patients with Parkinson's disease (PD) and age- and sex-similar matched non-PD controls. BACKGROUND: Epigenetic regulation is one of the major mechanisms for an organism to respond to the environment through changes in gene expression and has been implicated in numerous disease processes. We would like to examine epigenetic modification patterns that may predispose or protect against PD. METHODS: Frozen tissue samples of the human cerebral cortex from 12 PD patients and 12 subjects without PD pathology were obtained...
June 27, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28672859/astrocytic-expression-of-gsta4-is-associated-to-dopaminergic-neuroprotection-in-a-rat-6-ohda-model-of-parkinson-s-disease
#15
Michael Jewett, Itzia Jimenez-Ferrer, Maria Swanberg
Idiopathic Parkinson's disease (PD) is a complex disease caused by multiple, mainly unknown, genetic and environmental factors. The Ventral root avulsion 1 (Vra1) locus on rat chromosome 8 includes the Glutathione S-transferase alpha 4 (Gsta4) gene and has been identified in crosses between Dark Agouti (DA) and Piebald Virol Glaxo (PVG) rat strains as being associated to neurodegeneration after nerve and brain injury. The Gsta4 protein clears lipid peroxidation by-products, a process suggested to being implicated in PD...
June 26, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28672841/clinicopathological-phenotype-and-genetics-of-x-linked-dystonia-parkinsonism-xdp-dyt3-lubag
#16
REVIEW
Toshitaka Kawarai, Ryoma Morigaki, Ryuji Kaji, Satoshi Goto
X-linked dystonia-parkinsonism (XDP; OMIM314250), also referred to as DYT3 dystonia or "Lubag" disease, was first described as an endemic disease in the Philippine island of Panay. XDP is an adult-onset movement disorder characterized by progressive and severe dystonia followed by overt parkinsonism in the later years of life. Among the primary monogenic dystonias, XDP has been identified as a transcriptional dysregulation syndrome with impaired expression of the TAF1 (TATA box-binding protein associated factor 1) gene, which is a critical component of the cellular transcription machinery...
June 26, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28672806/phenotypic-discordance-in-siblings-with-identical-compound-heterozygous-park2-mutations
#17
David Isaacs, Daniel Claassen, Aaron B Bowman, Peter Hedera
PARK2 mutations are the most common cause of early-onset Parkinson's disease. No genotype-phenotype correlation exists, and phenotypic variability is quite common. We report two siblings with confirmed identical compound heterozygous mutations in the PARK2 gene manifesting strikingly different phenotypes. The older brother demonstrated marked parkinsonism by his mid-20's, whereas the younger brother developed exercise-induced dystonia in his mid-30's with no subsequent clinical progression, highlighting the clinical heterogeneity of the disease and implying the role of other genetic and/or environmental factors in disease progression...
June 24, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28640199/the-role-of-peripheral-cns-directed-antibodies-in-promoting-inflammatory-cns-demyelination
#18
REVIEW
Silke Kinzel, Martin S Weber
In central nervous system (CNS) demyelinating disorders, such as multiple sclerosis (MS), neuromyelitis optica (NMO) and related NMO-spectrum disorders (NMO-SD), a pathogenic role for antibodies is primarily projected into enhancing ongoing CNS inflammation by directly binding to target antigens within the CNS. This scenario is supported at least in part, by antibodies in conjunction with complement activation in the majority of MS lesions and by deposition of anti-aquaporin-4 (AQP-4) antibodies in areas of astrocyte loss in patients with classical NMO...
June 22, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28629158/contribution-of-the-degeneration-of-the-neuro-axonal-unit-to-the-pathogenesis-of-multiple-sclerosis
#19
REVIEW
Hannah E Salapa, Sangmin Lee, Yoojin Shin, Michael C Levin
Multiple sclerosis (MS) is a demyelinating, autoimmune disease of the central nervous system. In recent years, it has become more evident that neurodegeneration, including neuronal damage and axonal injury, underlies permanent disability in MS. This manuscript reviews some of the mechanisms that could be responsible for neurodegeneration and axonal damage in MS and highlights the potential role that dysfunctional heterogeneous nuclear ribonucleoprotein A1 (hnRNP A1) and antibodies to hnRNP A1 may play in MS pathogenesis...
June 18, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28621758/brain-magnetic-resonance-imaging-mri-as-a-potential-biomarker-for-parkinson-s-disease-pd
#20
REVIEW
Paul Tuite
Magnetic resonance imaging (MRI) has the potential to serve as a biomarker for Parkinson's disease (PD). However, the type or types of biomarker it could provide remain to be determined. At this time there is not sufficient sensitivity or specificity for MRI to serve as an early diagnostic biomarker, i.e., it is unproven in its ability to determine if a single individual is normal, has mild PD, or has some other forms of degenerative parkinsonism. However there is accumulating evidence that MRI may be useful in staging and monitoring disease progression (staging biomarker), and also possibly as a means to monitor pathophysiological aspects of disease and associated response to treatments, i...
June 16, 2017: Brain Sciences
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