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https://www.readbyqxmd.com/read/29353072/development-of-subcortical-volumes-across-adolescence-in-males-and-females-a-multisample-study-of-longitudinal-changes
#1
Megan M Herting, Cory Johnson, Kathryn L Mills, Nandita Vijayakumar, Meg Dennison, Chang Liu, Anne-Lise Goddings, Ronald E Dahl, Elizabeth R Sowell, Sarah Whittle, Nicholas B Allen, Christian K Tamnes
The developmental patterns of subcortical brain volumes in males and females observed in previous studies have been inconsistent. To help resolve these discrepancies, we examined developmental trajectories using three independent longitudinal samples of participants in the age-span of 8-22 years (total 216 participants and 467 scans). These datasets, including Pittsburgh (PIT; University of Pittsburgh, USA), NeuroCognitive Development (NCD; University of Oslo, Norway), and Orygen Adolescent Development Study (OADS; The University of Melbourne, Australia), span three countries and were analyzed together and in parallel using mixed-effects modeling with both generalized additive models and general linear models...
January 15, 2018: NeuroImage
https://www.readbyqxmd.com/read/29351510/scapular-focused-interventions-to-improve-shoulder-pain-and-function-in-adults-with-subacromial-pain-a-systematic-review-and-meta-analysis
#2
Hiroki Saito, Meg E Harrold, Vinicius Cavalheri, Leanda McKenna
The relationship between subacromial pain syndrome (SAPS) and altered scapular movement has been previously reported. The purpose of this review was to determine the effect of interventions that focus on addressing scapular components to improve shoulder pain, function, shoulder range of motion (ROM), and muscle strength in adults with SAPS. Databases searched in September 2016 were: PubMed, the Cochrane Central Register of Controlled Trials [Central], EMBASE [via Ovid] and PEDro. All studies selected for this review were randomized controlled trials...
January 19, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29350775/randomized-trial-of-transcranial-dc-stimulation-for-post-stroke-dysphagia
#3
Sonja Suntrup-Krueger, Corinna Ringmaier, Paul Muhle, Andreas Wollbrink, Andre Kemmling, Uta Hanning, Inga Claus, Tobias Warnecke, Inga Teismann, Christo Pantev, Rainer Dziewas
OBJECTIVE: We evaluated whether transcranial direct current stimulation (tDCS) is able to enhance dysphagia rehabilitation following stroke. Besides relating clinical effects with neuroplastic changes in cortical swallowing processing we aimed to identify factors influencing treatment success. METHODS: In this double-blind, randomized study 60 acute dysphagic stroke patients received contralesional anodal (1 mA, 20 min) or sham tDCS on four consecutive days. Swallowing function was thoroughly assessed before and after the intervention using the validated Fiberoptic Endoscopic Dysphagia Severity Scale (FEDSS) and clinical assessment...
January 19, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29347963/hungry-to-learn-the-prevalence-and-effects-of-food-insecurity-on-health-behaviors-and-outcomes-over-time-among-a-diverse-sample-of-university-freshmen
#4
Meg Bruening, Irene van Woerden, Michael Todd, Melissa N Laska
BACKGROUND: To examine longitudinal associations between food insecurity (FI) and health behaviors/outcomes among a diverse sample of university freshmen. METHODS: Freshman students (n = 1138; 65% female; 49% non-white) participating in the Social impact of Physical Activity and nutRition in College study completed surveys on health behaviors and had height/weight measured up to 4 times (T1-T4) in Arizona during 2015-2016. Structural equation models were estimated to determine if, after adjusting for covariates, FI predicted concurrent behaviors/outcomes and subsequent behaviors/outcomes...
January 18, 2018: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/29347874/adjunctive-glucocorticoid-therapy-in-patients-with-septic-shock
#5
Balasubramanian Venkatesh, Simon Finfer, Jeremy Cohen, Dorrilyn Rajbhandari, Yaseen Arabi, Rinaldo Bellomo, Laurent Billot, Maryam Correa, Parisa Glass, Meg Harward, Christopher Joyce, Qiang Li, Colin McArthur, Anders Perner, Andrew Rhodes, Kelly Thompson, Steve Webb, John Myburgh
Background Whether hydrocortisone reduces mortality among patients with septic shock is unclear. Methods We randomly assigned patients with septic shock who were undergoing mechanical ventilation to receive hydrocortisone (at a dose of 200 mg per day) or placebo for 7 days or until death or discharge from the intensive care unit (ICU), whichever came first. The primary outcome was death from any cause at 90 days. Results From March 2013 through April 2017, a total of 3800 patients underwent randomization. Status with respect to the primary outcome was ascertained in 3658 patients (1832 of whom had been assigned to the hydrocortisone group and 1826 to the placebo group)...
January 19, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29343459/differing-structural-properties-of-foods-affect-the-development-of-mandibular-control-and-muscle-coordination-in-infants-and-young-children
#6
Meg Simione, Chrystel Loret, Benjamin Le Révérend, Brian Richburg, Mirna Del Valle, Marc Adler, Mireille Moser, Jordan R Green
The development of chewing is an essential motor skill that is continually refined throughout early childhood. From a motor control perspective, the advancement of textures is dependent upon the fit between a child's oral anatomic and motor system and food properties. The purpose of this exploratory study is to identify age-related changes in chewing motor coordination and control and to determine if these changes are associated with the differing structural properties of solid foods, as well as to explore the role of explanatory variables such as the emergence of teeth and bite force...
January 14, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29342397/imaging-the-spatiotemporal-dynamics-of-cognitive-processes-at-high-temporal-resolution
#7
I Tal, M Abeles
This letter presents a noninvasive imaging technique that captures the exact timing and locations of cortical activity sequences that are specific to a cognitive process. These precise spatiotemporal sequences can be detected in the human brain as specific time-position pattern associated with a cognitive specific time-position pattern associated with a cognitive task. They are consistent with direct measurements of population activity recorded in nonhuman primates, thus suggesting that specific time-position patterns associated with a cognitive task can be identified...
January 17, 2018: Neural Computation
https://www.readbyqxmd.com/read/29342238/rhythmic-spontaneous-activity-mediates-the-age-related-decline-in-somatosensory-function
#8
Rachel K Spooner, Alex I Wiesman, Amy L Proskovec, Elizabeth Heinrichs-Graham, Tony W Wilson
Sensory gating is a neurophysiological process whereby the response to a second stimulus in a pair of identical stimuli is attenuated, and it is thought to reflect the capacity of the CNS to preserve neural resources for behaviorally relevant stimuli. Such gating is observed across multiple sensory modalities and is modulated by age, but the mechanisms involved are not understood. In this study, we examined somatosensory gating in 68 healthy adults using magnetoencephalography (MEG) and advanced oscillatory and time-domain analysis methods...
January 12, 2018: Cerebral Cortex
https://www.readbyqxmd.com/read/29339790/decoding-the-dynamic-representation-of-musical-pitch-from-human-brain-activity
#9
N Sankaran, W F Thompson, S Carlile, T A Carlson
In music, the perception of pitch is governed largely by its tonal function given the preceding harmonic structure of the music. While behavioral research has advanced our understanding of the perceptual representation of musical pitch, relatively little is known about its representational structure in the brain. Using Magnetoencephalography (MEG), we recorded evoked neural responses to different tones presented within a tonal context. Multivariate Pattern Analysis (MVPA) was applied to "decode" the stimulus that listeners heard based on the underlying neural activity...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29339505/nonenzymatic-release-of-n7-methylguanine-channels-repair-of-abasic-sites-into-an-ap-endonuclease-independent-pathway-in-arabidopsis
#10
Casimiro Barbado, Dolores Córdoba-Cañero, Rafael R Ariza, Teresa Roldán-Arjona
Abasic (apurinic/apyrimidinic, AP) sites in DNA arise from spontaneous base loss or by enzymatic removal during base excision repair. It is commonly accepted that both classes of AP site have analogous biochemical properties and are equivalent substrates for AP endonucleases and AP lyases, although the relative roles of these two types of enzymes are not well understood. We provide here genetic and biochemical evidence that, in Arabidopsis, AP sites generated by spontaneous loss of N7-methylguanine (N7-meG) are exclusively repaired through an AP endonuclease-independent pathway initiated by FPG, a bifunctional DNA glycosylase with AP lyase activity...
January 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29334983/an-individually-tailored-family-centered-intervention-for-pediatric-obesity-in-primary-care-study-protocol-of-a-randomized-type-ii-hybrid-effectiveness-implementation-trial-raising-healthy-children-study
#11
Justin D Smith, Cady Berkel, Neil Jordan, David C Atkins, Shrikanth S Narayanan, Carlos Gallo, Kevin J Grimm, Thomas J Dishion, Anne M Mauricio, Jenna Rudo-Stern, Mariah K Meachum, Emily Winslow, Meg M Bruening
BACKGROUND: Pediatric obesity is a multi-faceted public health concern that can lead to cardiovascular diseases, cancers, and early mortality. Small changes in diet, physical activity, or BMI can significantly reduce the possibility of developing cardiometabolic risk factors. Family-based behavioral interventions are an underutilized, evidence-based approach that have been found to significantly prevent excess weight gain and obesity in children and adolescents. Poor program availability, low participation rates, and non-adherence are noted barriers to positive outcomes...
January 15, 2018: Implementation Science: IS
https://www.readbyqxmd.com/read/29333688/infant-brain-responses-to-felt-and-observed-touch-of-hands-and-feet-an-meg-study
#12
Andrew N Meltzoff, Rey R Ramírez, Joni N Saby, Eric Larson, Samu Taulu, Peter J Marshall
There is growing interest concerning the ways in which the human body, both one's own and that of others, is represented in the developing human brain. In two experiments with 7-month-old infants, we employed advances in infant magnetoencephalography (MEG) brain imaging to address novel questions concerning body representations in early development. Experiment 1 evaluated the spatiotemporal organization of infants' brain responses to being touched. A punctate touch to infants' hands and feet produced significant activation in the hand and foot areas of contralateral primary somatosensory cortex as well as in other parietal and frontal areas...
January 14, 2018: Developmental Science
https://www.readbyqxmd.com/read/29332781/pediatric-extracorporeal-cardiopulmonary-resuscitation-patient-with-traumatic-subarachnoid-hemorrhage-and-takotsubo-syndrome
#13
Thomas E Pearson, Meg A Frizzola, Marc A Priest, Monica A Rochman, Curtis D Froehlich
Takotsubo syndrome is rare in pediatric patients but must be considered in patients with subarachnoid hemorrhage with pulmonary edema and cardiomyopathy. A systematic, collaborative approach is needed to facilitate emergent transfer of patients where extracorporeal cardiopulmonary resuscitation (e-CPR) is used as a lifesaving measure. Extracorporeal membrane oxygenation (ECMO) use in transport requires preplanning, role delineation, resources, and research efforts to be successful. We present an unusual transport case of successful e-CPR/ECMO treatment of Takotsubo syndrome in a 12-year-old boy with an isolated traumatic intracranial injury, cardiomyopathy with pulmonary edema, and multiple cardiac arrests...
January 2018: Air Medical Journal
https://www.readbyqxmd.com/read/29331287/characterizing-the-effects-of-deep-brain-stimulation-with-magnetoencephalography-a-review
#14
REVIEW
Irene E Harmsen, Nathan C Rowland, Richard A Wennberg, Andres M Lozano
BACKGROUND: Deep brain stimulation (DBS) is an important form of neuromodulation that is being applied to patients with motor, mood, or cognitive circuit disorders. Despite the efficacy and widespread use of DBS, the precise mechanisms by which it works remain unknown. Over the last decade, magnetoencephalography (MEG) has become an important functional neuroimaging technique used to study DBS. OBJECTIVE: This review summarizes the literature related to the use of MEG to characterize the effects of DBS...
January 4, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29330134/a-supplementary-functional-connectivity-microstate-attached-to-the-default-mode-network-in-depression-revealed-by-resting-state-magnetoencephalography
#15
Siqi Zhang, Shui Tian, Mohammad Ridwan Chattun, Hao Tang, Rui Yan, Kun Bi, Zhijian Yao, Qing Lu
Default mode network (DMN) has discernable involvement in the representation of negative, self-referential information in depression. Both increased and decreased resting-state functional connectivity between the anterior and posterior DMN have been observed in depression. These conflicting connectivity differences necessitated further exploration of the resting-state DMN dysfunction in depression. Hence, we investigated the time-varying dynamic interactions within the DMN via functional connectivity microstates in a sub-second level...
January 9, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29329355/when-the-brain-changes-its-mind-oscillatory-dynamics-of-conflict-processing-and-response-switching-in-a-flanker-task-during-alcohol-challenge
#16
Lauren E Beaton, Sheeva Azma, Ksenija Marinkovic
Despite the subjective experience of being in full and deliberate control of our actions, our daily routines rely on a continuous and interactive engagement of sensory evaluation and response preparation streams. They unfold automatically and unconsciously and are seamlessly integrated with cognitive control which is mobilized by stimuli that evoke ambiguity or response conflict. Methods with high spatio-temporal sensitivity are needed to provide insight into the interplay between automatic and controlled processing...
2018: PloS One
https://www.readbyqxmd.com/read/29323558/optimizing-delivery-of-hiv-preexposure-prophylaxis-for-women-in-the-united-states
#17
Erika Aaron, Cori Blum, Dominika Seidman, Mary Jo Hoyt, Joanne Simone, Meg Sullivan, Dawn K Smith
Preexposure prophylaxis (PrEP) is a highly effective HIV prevention method; however, it is underutilized among women who are at risk for acquisition of HIV. Women comprise one in five HIV diagnoses in the United States, and significant racial disparities in new HIV diagnoses persist. The rate of new HIV diagnoses among black and African American women in 2015 was 16 times greater than that of white women. These disparities highlight the importance of HIV prevention strategies for women, including the use of PrEP...
January 2018: AIDS Patient Care and STDs
https://www.readbyqxmd.com/read/29320516/impact-of-mode-of-delivery-on-pregnancy-outcomes-in-women-with-premature-rupture-of-membranes-after-28-weeks-of-gestation-in-a-low-resource-setting-a-prospective-cohort-study
#18
Herbert Kayiga, Felicia Lester, Pauline Mary Amuge, Josaphat Byamugisha, Amy Meg Autry
BACKGROUND: Despite the high prevalence of premature rupture of membranes (PROM) in low-resource settings, the preferred mode of delivery remains unclear. We compared the perinatal mortality in a prospective cohort of women with PROM after 28 weeks following vaginal or caesarean delivery at Mulago Hospital with the aim of adopting evidence based practice and improving patient care. METHODS: Between November 2015 and May 2016, 1455 women with PROM after 28 weeks of gestation and their newborns were prospectively followed from admission to discharge at Mulago Hospital...
2018: PloS One
https://www.readbyqxmd.com/read/29311143/neural-integration-of-stimulus-history-underlies-prediction-for-naturalistically-evolving-sequences
#19
Brian Maniscalco, Jennifer L Lee, Patrice Abry, Amy Lin, Tom Holroyd, Biyu J He
Forming valid predictions about the environment is crucial to survival. However, whether humans are able to form valid predictions about natural stimuli based on their temporal statistical regularities remains unknown. Here we presented subjects with tone sequences whose pitch fluctuation over time capture long-range temporal dependence structures prevalent in natural stimuli. We found that subjects were able to exploit such naturalistic statistical regularities to make valid predictions about upcoming items in a sequence...
January 8, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29300731/madagascar-can-build-stronger-health-systems-to-fight-plague-and-prevent-the-next-epidemic
#20
Matthew H Bonds, Mohammed A Ouenzar, Andres Garchitorena, Laura F Cordier, Meg G McCarty, Michael L Rich, Benjamin Andriamihaja, Justin Haruna, Paul E Farmer
No abstract text is available yet for this article.
January 2018: PLoS Neglected Tropical Diseases
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