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https://www.readbyqxmd.com/read/28640798/evaluation-of-placental-and-fetal-tissue-specimens-for-zika-virus-infection-50-states-and-district-of-columbia-january-december-2016
#1
Sarah Reagan-Steiner, Regina Simeone, Elizabeth Simon, Julu Bhatnagar, Titilope Oduyebo, Rebecca Free, Amy M Denison, Demi B Rabeneck, Sascha Ellington, Emily Petersen, Joy Gary, Gillian Hale, M Kelly Keating, Roosecelis B Martines, Atis Muehlenbachs, Jana Ritter, Ellen Lee, Alexander Davidson, Erin Conners, Sarah Scotland, Kayleigh Sandhu, Andrea Bingham, Elizabeth Kassens, Lou Smith, Kirsten St George, Nina Ahmad, Mary Tanner, Suzanne Beavers, Brooke Miers, Kelley VanMaldeghem, Sumaiya Khan, Ingrid Rabe, Carolyn Gould, Dana Meaney-Delman, Margaret A Honein, Wun-Ju Shieh, Denise J Jamieson, Marc Fischer, Sherif R Zaki
Zika virus infection during pregnancy can cause congenital microcephaly and brain abnormalities (1), and detection of Zika virus RNA in clinical and tissue specimens can provide definitive laboratory evidence of recent Zika virus infection. Whereas duration of viremia is typically short, prolonged detection of Zika virus RNA in placental, fetal, and neonatal brain tissue has been reported and can provide key diagnostic information by confirming recent Zika virus infection (2). In accordance with recent guidance (3,4), CDC provides Zika virus testing of placental and fetal tissues in clinical situations where this information could add diagnostic value...
June 23, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28622530/brain-network-dynamics-in-the-human-articulatory-loop
#2
Masaaki Nishida, Anna Korzeniewska, Nathan E Crone, Goichiro Toyoda, Yasuo Nakai, Noa Ofen, Erik C Brown, Eishi Asano
OBJECTIVE: The articulatory loop is a fundamental component of language function, involved in the short-term buffer of auditory information followed by its vocal reproduction. We characterized the network dynamics of the human articulatory loop, using invasive recording and stimulation. METHODS: We measured high-gamma activity70-110 Hz recorded intracranially when patients with epilepsy either only listened to, or listened to and then reproduced two successive tones by humming...
May 17, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28614695/sex-differences-in-aerobic-exercise-efficacy-to-improve-cognition-a-systematic-review-and-meta-analysis-of-studies-in-older-rodents
#3
REVIEW
Cindy K Barha, Ryan S Falck, Jennifer C Davis, Lindsay S Nagamatsu, Teresa Liu-Ambrose
Research in humans indicates that women may show greater cognitive benefits from aerobic training (AT) than men. To determine whether this sex difference extends to rodents, we conducted a systematic review and meta-analysis of studies in healthy, older rodents. Results indicate that compared to controls, AT improved hippocampus-dependent and -independent learning and memory. A sex difference was found with males showing larger benefits from AT on conditioned-avoidance and non-spatial memory tasks. AT also increased brain-derived neurotrophic factor compared to controls, with larger effects in females...
July 2017: Frontiers in Neuroendocrinology
https://www.readbyqxmd.com/read/28594097/functional-activity-of-the-sensorimotor-cortex-and-cerebellum-relates-to-cervical-dystonia-symptoms
#4
Roxana G Burciu, Christopher W Hess, Stephen A Coombes, Edward Ofori, Priyank Shukla, Jae Woo Chung, Nikolaus R McFarland, Aparna Wagle Shukla, Michael S Okun, David E Vaillancourt
Cervical dystonia (CD) is the most common type of focal dystonia, causing abnormal movements of the neck and head. In this study, we used noninvasive imaging to investigate the motor system of patients with CD and uncover the neural correlates of dystonic symptoms. Furthermore, we examined whether a commonly prescribed anticholinergic medication in CD has an effect on the dystonia-related brain abnormalities. Participants included 16 patients with CD and 16 healthy age-matched controls. We collected functional MRI scans during a force task previously shown to extensively engage the motor system, and diffusion and T1-weighted MRI scans from which we calculated free-water and brain tissue densities...
June 8, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28584214/study-on-language-rehabilitation-for-aphasia
#5
REVIEW
Zeng-Zhi Yu, Shu-Jun Jiang, Zi-Shan Jia, Hong-Yu Xiao, Mei-Qi Zhou
OBJECTIVE: The aim is to update our clinical recommendations for evidence-based language rehabilitation of people with aphasia, based on a systematic review of the literature from 1999 to 2015. DATA SOURCES: Articles referred to in this systematic review of the Medline and PubMed published in English language literatures were from 1998 to 2015. The terms used in the literature searches were aphasia and evidenced-based. STUDY SELECTION: The task force initially identified citations for 51 published articles...
June 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28555098/hemodynamic-response-alterations-in-sensorimotor-areas-as-a-function-of-barbell-load-levels-during-squatting-an-fnirs-study
#6
Rouven Kenville, Tom Maudrich, Daniel Carius, Patrick Ragert
Functional near-infrared spectroscopy (fNIRS) serves as a promising tool to examine hemodynamic response alterations in a sports-scientific context. The present study aimed to investigate how brain activity within the human motor system changes its processing in dependency of different barbell load conditions while executing a barbell squat (BS). Additionally, we used different fNIRS probe configurations to identify and subsequently eliminate potential exercise induced systemic confounders such as increases in extracerebral blood flow...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28528447/a-single-bout-of-endurance-exercise-modulates-eeg-microstates-temporal-features
#7
Jérôme N Spring, Miralena I Tomescu, Jérôme Barral
Electrical neuroimaging is a promising method to explore the spontaneous brain function after physical exercise. The present study aims to investigate the effect of acute physical exercise on the temporal dynamic of the resting brain activity captured by the four conventional map topographies (microstates) described in the literature, and to associate these brain changes with the post-exercise neuromuscular function. Twenty endurance-trained subjects performed a 30-min biking task at 60% of their maximal aerobic power followed by a 10 km all-out time trial...
May 20, 2017: Brain Topography
https://www.readbyqxmd.com/read/28503368/running-wheel-training-does-not-change-neurogenesis-levels-or-alter-working-memory-tasks-in-adult-rats
#8
Cesar A Acevedo-Triana, Manuel J Rojas, Fernando Cardenas P
BACKGROUND: Exercise can change cellular structure and connectivity (neurogenesis or synaptogenesis), causing alterations in both behavior and working memory. The aim of this study was to evaluate the effect of exercise on working memory and hippocampal neurogenesis in adult male Wistar rats using a T-maze test. METHODS: An experimental design with two groups was developed: the experimental group (n = 12) was subject to a forced exercise program for five days, whereas the control group (n = 9) stayed in the home cage...
2017: PeerJ
https://www.readbyqxmd.com/read/28489540/nonlinear-frequency-domain-analysis-of-the-transformation-of-cortical-inputs-by-a-motoneuron-pool-muscle-complex
#9
Renato Watanabe, Andre Kohn
Corticomotor coherence in the beta and/or gamma bands has been described in different motor tasks but the role of descending brain oscillations on force control has been elusive. Large-scale computational models of a motoneuron pool and the muscle it innervates have been used as tools to advance the knowledge of how neural elements may influence force control. Here we present a frequency domain analysis of a NARX model fitted to a large-scale neuromuscular model by means of generalized frequency response functions (GFRF)...
May 4, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28485884/altered-sensorimotor-cortical-oscillations-in-individuals-with-multiple-sclerosis-suggests-a-faulty-internal-model
#10
David J Arpin, Elizabeth Heinrichs-Graham, James E Gehringer, Rana Zabad, Tony W Wilson, Max J Kurz
Multiple sclerosis (MS) is a demyelinating disease that results in a broad array of symptoms, including impaired motor performance. How such demyelination of fibers affects the inherent neurophysiological activity in motor circuits, however, remains largely unknown. Potentially, the movement errors associated with MS may be due to imperfections in the internal model used to make predictions of the motor output that will meet the task demands. Prior magnetoencephalographic (MEG) and electroencephalographic brain imaging experiments have established that the beta (15-30 Hz) oscillatory activity in the sensorimotor cortices is related to the control of movement...
May 9, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28484416/neuromyths-in-music-education-prevalence-and-predictors-of-misconceptions-among-teachers-and-students
#11
Nina Düvel, Anna Wolf, Reinhard Kopiez
In the last decade, educational neuroscience has become increasingly important in the context of instruction, and its applications have been transformed into new teaching methods. Although teachers are interested in educational neuroscience, communication between scientists and teachers is not always straightforward. Thus, misunderstandings of neuroscientific research results can evolve into so-called neuromyths. The aim of the present study was to investigate the prevalence of such music-related neuromyths among music teachers and music students...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28471701/the-brain-derived-neurotrophic-factor-val66met-polymorphism-delivery-method-birth-weight-and-night-sleep-duration-as-determinants-of-obesity-in-vietnamese-children-of-primary-school-age
#12
Le Thi Tuyet, Bui Thi Nhung, Duong Thi Anh Dao, Nguyen Thi Hong Hanh, Le Danh Tuyen, Tran Quang Binh, Vu Thi Minh Thuc
BACKGROUND: Obesity is a complex disease that involves both environmental and genetic factors in its pathogenesis. Several studies have identified multiple obesity-associated loci in many populations. However, their contribution to obesity in the Vietnamese population is not fully described, especially in children. The study aimed to investigate the association of obesity with Val66Met polymorphism in brain-derived neurotrophic factor (BDNF) gene, delivery method, birth weight, and lifestyle factors in Vietnamese primary school children...
May 4, 2017: Childhood Obesity
https://www.readbyqxmd.com/read/28469563/the-role-of-associative-cortices-and-hippocampus-during-movement-perturbations
#13
Matthew S D Kerr, Pierre Sacré, Kevin Kahn, Hyun-Joo Park, Mathew Johnson, James Lee, Susan Thompson, Juan Bulacio, Jaes Jones, Jorge González-Martínez, Catherine Liégeois-Chauvel, Sridevi V Sarma, John T Gale
Although motor control has been extensively studied, most research involving neural recordings has focused on primary motor cortex, pre-motor cortex, supplementary motor area, and cerebellum. These regions are involved during normal movements, however, associative cortices and hippocampus are also likely involved during perturbed movements as one must detect the unexpected disturbance, inhibit the previous motor plan, and create a new plan to compensate. Minimal data is available on these brain regions during such "robust" movements...
2017: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/28452879/aeromedical-evacuation-relevant-hypobaria-worsens-axonal-and-neurologic-injury-in-rats-after-underbody-blast-induced-hyperacceleration
#14
Julie L Proctor, Kaitlin T Mello, Raymond Fang, Adam C Puche, Robert E Rosenthal, William L Fourney, Ulrich H Leiste, Gary Fiskum
BACKGROUND: Occupants of military vehicles targeted by explosive devices often suffer from traumatic brain injury (TBI) and are typically transported by the aeromedical evacuation (AE) system to a military medical center within a few days. This study tested the hypothesis that exposure of rats to AE-relevant hypobaria worsens cerebral axonal injury and neurologic impairment caused by underbody blasts. METHODS: Anesthetized adult male rats were secured within cylinders attached to a metal plate, simulating the hull of an armored vehicle...
July 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28451885/impact-of-high-fat-diet-and-early-stress-on-depressive-like-behavior-and-hippocampal-plasticity-in-adult-male-rats
#15
Danusa Mar Arcego, Ana Paula Toniazzo, Rachel Krolow, Carine Lampert, Carolina Berlitz, Emily Dos Santos Garcia, Fabrício do Couto Nicola, Juliana Bender Hoppe, Mariana Maier Gaelzer, Caroline Peres Klein, Camilla Lazzaretti, Carla Dalmaz
During development, the brain goes through fundamental processes, including organization of neural networks and plasticity. Environmental interventions may change initial brain programming, leading to long-lasting effects and altering the susceptibility to psychopathologies, including depression disorder. It is known that depression is a psychiatric disorder with a high prevalence worldwide, including high rates among adolescents. In this study, we evaluated whether social isolation in the prepubertal period and chronic use of high-fat diet (HFD) may induce depressive-like behavior in male adult rats...
April 27, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28447333/efficacy-and-tolerability-of-lithium-in-treating-acute-mania-in-youth-with-bipolar-disorder-protocol-for-a-systematic-review
#16
A Duffy, S Patten, S Goodday, A Weir, N Heffer, A Cipriani
BACKGROUND: Epidemiological, clinical, and high-risk studies have provided evidence that the peak period for onset of diagnosable episodes of mania and hypomania starts in mid-to-late adolescence. Moreover, clinically significant manic symptoms may occur even earlier, especially in children at familial risk. Lithium is the gold standard treatment for acute mania in adults, yet to our knowledge, there is no published systematic review assessing lithium treatment of mania in children or adolescents...
December 2017: International Journal of Bipolar Disorders
https://www.readbyqxmd.com/read/28446874/age-related-differences-in-reorganization-of-functional-connectivity-for-a-dual-task-with-increasing-postural-destabilization
#17
Cheng-Ya Huang, Linda L Lin, Ing-Shiou Hwang
The aged brain may not make good use of central resources, so dual task performance may be degraded. From the brain connectome perspective, this study investigated dual task deficits of older adults that lead to task failure of a suprapostural motor task with increasing postural destabilization. Twelve younger (mean age: 25.3 years) and 12 older (mean age: 65.8 years) adults executed a designated force-matching task from a level-surface or a stabilometer board. Force-matching error, stance sway, and event-related potential (ERP) in the preparatory period were measured...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28437225/neck-collar-with-mild-jugular-vein-compression-ameliorates-brain-activation-changes-during-a-working-memory-task-after-a-season-of-high-school-football
#18
Weihong Yuan, James Leach, Thomas Maloney, Mekibib Altaye, David Smith, Paul J Gubanich, Kim D Barber Foss, Staci Thomas, Christopher A DiCesare, Adam W Kiefer, Gregory D Myer
Emerging evidence indicates that repetitive head impacts, even at a sub-concussive level, may result in exacerbated or prolonged neurological deficits in athletes. This study aimed to: 1) quantify the effect of repetitive head impacts on the alteration of neuronal activity based on functional magnetic resonance imaging (fMRI) of working memory after a high school football season; and 2) determine whether a neck collar that applies mild jugular vein compression designed to reduce brain energy absorption in head impact through "slosh" mitigation can ameliorate the altered fMRI activation during a working memory task...
June 8, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28424602/assessing-the-driver-s-current-level-of-working-memory-load-with-high-density-functional-near-infrared-spectroscopy-a-realistic-driving-simulator-study
#19
Anirudh Unni, Klas Ihme, Meike Jipp, Jochem W Rieger
Cognitive overload or underload results in a decrease in human performance which may result in fatal incidents while driving. We envision that driver assistive systems which adapt their functionality to the driver's cognitive state could be a promising approach to reduce road accidents due to human errors. This research attempts to predict variations of cognitive working memory load levels in a natural driving scenario with multiple parallel tasks and to reveal predictive brain areas. We used a modified version of the n-back task to induce five different working memory load levels (from 0-back up to 4-back) forcing the participants to continuously update, memorize, and recall the previous 'n' speed sequences and adjust their speed accordingly while they drove for approximately 60 min on a highway with concurrent traffic in a virtual reality driving simulator...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28421482/cost-effectiveness-of-stereotactic-radiosurgery-and-stereotactic-body-radiation-therapy-a-critical-review
#20
REVIEW
Nataniel H Lester-Coll, David J Sher
PURPOSE OF REVIEW: This review aims to summarize and appraise published cost-effectiveness studies on stereotactic radiosurgery (SRS) and stereotactic body radiation therapy (SBRT). RECENT FINDINGS: We performed a Medline search of cost-effectiveness studies of SRS, SBRT, and other cancer treatment modalities such as surgery and systemic therapy from 2006 to 2016. We included studies that used both modeling and retrospective review techniques. We excluded studies of benign disease...
June 2017: Current Oncology Reports
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