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https://www.readbyqxmd.com/read/29160744/modulation-of-neural-oscillatory-activity-during-dynamic-face-processing
#1
Elaine Foley, Gina Rippon, Carl Senior
Various neuroimaging and neurophysiological methods have been used to examine neural activation patterns in response to faces. However, much of previous research has relied on static images of faces, which do not allow a complete description of the temporal structure of face-specific neural activities to be made. More recently, insights are emerging from fMRI studies about the neural substrates that underpin our perception of naturalistic dynamic face stimuli, but the temporal and spectral oscillatory activity associated with processing dynamic faces has yet to be fully characterized...
November 21, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/29159037/reorganization-of-the-somatosensory-cortex-in-hemiplegic-cerebral-palsy-associated-with-impaired-sensory-tracts
#2
Christos Papadelis, Erin E Butler, Madelyn Rubenstein, Limin Sun, Lilla Zollei, Donna Nimec, Brian Snyder, Patricia Ellen Grant
Functional neuroimaging studies argue that sensory deficits in hemiplegic cerebral palsy (HCP) are related to deviant somatosensory processing in the ipsilesional primary somatosensory cortex (S1). A separate body of structural neuroimaging literature argues that these deficits are due to structural damage of the ascending sensory tracts (AST). The relationship between the functional and structural integrity of the somatosensory system and the sensory performance is largely unknown in HCP. To address this relationship, we combined findings from magnetoencephalography (MEG) and probabilistic diffusion tractography (PDT) in 10 children with HCP and 13 typically developing (TD) children...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29158657/academic-community-partnership-development-to-enhance-program-outcomes-in-underserved-communities-a-case-study
#3
Meg Skizim, Nick Harris, Claudia Leonardi, Richard Scribner
Purpose: A community-academic partnership was developed to assess community needs and restructure a variety of community-based programs that provide services to underserved communities in New Orleans, Louisiana. Methods: The community and academic partners utilized five phases to assess community needs and restructure programs: 1) meetings; 2) narrowing the scope of community programs; 3) data collection and analysis; 4) emphasizing target programs; and 5) improving sustainability through grant submissions and grant development training...
2017: Ethnicity & Disease
https://www.readbyqxmd.com/read/29158654/farmers-market-utilization-among-supplemental-nutrition-assistance-program-recipients-in-new-orleans-louisiana-preliminary-findings
#4
Henry Nuss, Meg Skizim, Hasheemah Afaneh, Lucio Miele, Melinda Sothern
Objective: Farmers' markets are increasingly being promoted as a means to provide fresh produce to poor and underserved communities. However, farmers' market (FM) use remains low among low-income patrons. The purpose of our study was to examine FM awareness and use, grocery shopping behaviors, and internet use among Supplemental Nutrition Assistance Program (SNAP) recipients. Design: A descriptive analysis of preliminary data was performed to evaluate quantitative baseline data among SNAP recipients between June and August 2016 in New Orleans, Louisiana (N=51)...
2017: Ethnicity & Disease
https://www.readbyqxmd.com/read/29155079/analyzing-eeg-and-meg-signals-recorded-during-tes-a-reply
#5
Nima Noury, Markus Siegel
Transcranial Electric Stimulation (tES) is a widely used non-invasive brain stimulation technique. However, strong stimulation artifacts complicate the investigation of neural activity with EEG or MEG during tES. Thus, studying brain signals during tES requires detailed knowledge about the properties of these artifacts. Recently, we characterized the phase- and amplitude-relationship between tES stimulation currents and tES artifacts in EEG and MEG and provided a mathematical model of these artifacts (Noury and Siegel, 2017, and Noury et al...
November 14, 2017: NeuroImage
https://www.readbyqxmd.com/read/29149202/intraspecific-evolutionary-relationships-among-peregrine-falcons-in-western-north-american-high-latitudes
#6
Sandra L Talbot, George K Sage, Sarah A Sonsthagen, Meg C Gravley, Ted Swem, Jeffrey C Williams, Jonathan L Longmire, Skip Ambrose, Melanie J Flamme, Stephen B Lewis, Laura Phillips, Clifford Anderson, Clayton M White
Subspecies relationships within the peregrine falcon (Falco peregrinus) have been long debated because of the polytypic nature of melanin-based plumage characteristics used in subspecies designations and potential differentiation of local subpopulations due to philopatry. In North America, understanding the evolutionary relationships among subspecies may have been further complicated by the introduction of captive bred peregrines originating from non-native stock, as part of recovery efforts associated with mid 20th century population declines resulting from organochloride pollution...
2017: PloS One
https://www.readbyqxmd.com/read/29146728/source-estimation-of-epileptic-activity-using-eloreta-kurtosis-analysis
#7
Shunichiro Ikeda, Ryouhei Ishii, Leonides Canuet, Roberto D Pascual-Marqui
Exact low-resolution brain electromagnetic tomography (eLORETA) is a technique for three-dimensional representation of the distribution of sources of electrical activity in the brain. Kurtosis analysis allows for identification of spiky activity in the brain. To evaluate the reliability of eLORETA kurtosis analysis, the results of the analysis were compared with those of equivalent current dipole (ECD) and synthetic aperture magnetometry (SAM) kurtosis analysis of magnetoencephalography (MEG) data in a patient with epilepsy with elementary visual seizures in a 6-year follow-up...
November 16, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29146464/language-control-mechanisms-differ-for-native-languages-neuromagnetic-evidence-from-trilingual-language-switching
#8
Suzanne C A Hut, Päivi Helenius, Alina Leminen, Jyrki P Mäkelä, Minna Lehtonen
How does the brain process and control languages that are learned at a different age, when proficiency in all these languages is high? Early acquired strong languages are likely to have higher baseline activation levels than later learned less-dominant languages. However, it is still largely unknown how the activation levels of these different languages are controlled, and how interference from an irrelevant language is prevented. In this magnetoencephalography (MEG) study on language switching during auditory perception, early Finnish-Swedish bilinguals (N=18) who mastered English with high proficiency after childhood were presented with spoken words in each of the three languages, while performing a simple semantic categorisation task...
November 13, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/29144224/violence-exposure-and-neural-systems-underlying-working-memory-for-emotional-stimuli-in-youth
#9
Jessica L Jenness, Maya L Rosen, Kelly A Sambrook, Meg J Dennison, Hilary K Lambert, Margaret A Sheridan, Katie A McLaughlin
Violence exposure during childhood is common and associated with poor cognitive and academic functioning. However, little is known about how violence exposure influences cognitive processes that might contribute to these disparities, such as working memory, or their neural underpinnings, particularly for cognitive processes that occur in emotionally salient contexts. We address this gap in a sample of 54 participants aged 8 to 19 years (50% female), half with exposure to interpersonal violence. Participants completed a delayed match to sample task for emotional faces while undergoing functional magnetic resonance imaging scanning...
November 16, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/29138310/sparsity-enables-estimation-of-both-subcortical-and-cortical-activity-from-meg-and-eeg
#10
Pavitra Krishnaswamy, Gabriel Obregon-Henao, Jyrki Ahveninen, Sheraz Khan, Behtash Babadi, Juan Eugenio Iglesias, Matti S Hämäläinen, Patrick L Purdon
Subcortical structures play a critical role in brain function. However, options for assessing electrophysiological activity in these structures are limited. Electromagnetic fields generated by neuronal activity in subcortical structures can be recorded noninvasively, using magnetoencephalography (MEG) and electroencephalography (EEG). However, these subcortical signals are much weaker than those generated by cortical activity. In addition, we show here that it is difficult to resolve subcortical sources because distributed cortical activity can explain the MEG and EEG patterns generated by deep sources...
November 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29138088/comparing-multilayer-brain-networks-between-groups-introducing-graph-metrics-and-recommendations
#11
Kanad Mandke, Jil Meier, Matthew J Brookes, Reuben D O'Dea, Piet Van Mieghem, Cornelis J Stam, Arjan Hillebrand, Prejaas Tewarie
There is an increasing awareness of the advantages of multi-modal neuroimaging. Networks obtained from different modalities are usually treated in isolation, which is however contradictory to accumulating evidence that these networks show non-trivial interdependencies. Even networks obtained from a single modality, such as frequency-band specific functional networks measured from magnetoencephalography (MEG) are often treated independently. Here, we discuss how a multilayer network framework allows for integration of multiple networks into a single network description and how graph metrics can be applied to quantify multilayer network organisation for group comparison...
November 11, 2017: NeuroImage
https://www.readbyqxmd.com/read/29135330/suffering-in-advanced-cancer-a-randomized-control-trial-of-a-narrative-intervention
#12
Meg Wise, Lucille R Marchand, Linda J Roberts, Ming-Yuan Chih
BACKGROUND: Advanced cancer can erode patients' wellbeing. Narrative interventions have improved patients' wellbeing, but might not be feasible for widespread implementation. OBJECTIVES: (1) Test the effects of miLivingStory, a telephone-based life review and illness narrative intervention with online resources and social networking, on community-dwelling advanced cancer patients' wellbeing. (2) Explore intervention use and satisfaction. PATIENTS AND SETTING: Stage III or IV cancer patients having completed initial therapy were randomized to miLivingStory or to an active control group, miOwnResources...
November 14, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/29133324/effects-of-falls-prevention-interventions-on-falls-outcomes-for-hospitalised-adults-protocol-for-a-systematic-review-with-meta-analysis
#13
Susan C Slade, David L Carey, Anne-Marie Hill, Meg E Morris
INTRODUCTION: Falls are a major global public health problem and leading cause of accidental or unintentional injury and hospitalisation. Falls in hospital are associated with longer length of stay, readmissions and poor outcomes. Falls prevention is informed by knowledge of reversible falls risk factors and accurate risk identification. The extent to which hospital falls are prevented by evidence-based practice, patient self-management initiatives, environmental modifications and optimisation of falls prevention systems awaits confirmation...
November 12, 2017: BMJ Open
https://www.readbyqxmd.com/read/29132016/children-s-representation-of-abstract-relations-in-relational-array-match-to-sample-tasks
#14
Jean-Rémy Hochmann, Arin S Tuerk, Sophia Sanborn, Rebecca Zhu, Robert Long, Meg Dempster, Susan Carey
Five experiments compared preschool children's performance to that of adults and of non-human animals on match to sample tasks involving 2-item or 16-item arrays that varied according to their composition of same or different items (Array Match-to-Sample, AMTS). They establish that, like non-human animals in most studies, 3- and 4-year-olds fail 2-item AMTS (the classic relational match to sample task introduced into the literature by Premack, 1983), and that robust success is not observed until age 6. They also establish that 3-year-olds, like non-human animal species, succeed only when they are able to encode stimuli in terms of entropy, a property of an array (namely its internal variability), rather than relations among the individuals in the array (same vs...
November 10, 2017: Cognitive Psychology
https://www.readbyqxmd.com/read/29128542/truncated-rap-music-trap-music-for-meg-and-eeg-source-localization
#15
Niko Mäkelä, Matti Stenroos, Jukka Sarvas, Risto J Ilmoniemi
Electrically active brain regions can be located applying MUltiple SIgnal Classification (MUSIC) on magneto- or electroencephalographic (MEG; EEG) data. We introduce a new MUSIC method, called truncated recursively-applied-and-projected MUSIC (TRAP-MUSIC). It corrects a hidden deficiency of the conventional RAP-MUSIC algorithm, which prevents estimation of the true number of brain-signal sources accurately. The correction is done by applying a sequential dimension reduction to the signal-subspace projection...
November 8, 2017: NeuroImage
https://www.readbyqxmd.com/read/29128237/medication-management-in-minnesota-schools-the-need-for-school-nurse-pharmacist-partnerships
#16
Meg M Little, Sara Eischens, Mary Jo Martin, Susan Nokleby, Laura C Palombi, Cynthia Van Kirk, Jayme van Risseghem, Ya-Feng Wen, Jennifer Koziol Wozniak, Erika Yoney, Randall Seifert
BACKGROUND: Pharmacist participation in school medication management (MM) is minimal. School nurses are responsible for increasingly complex medication administration and management in schools. OBJECTIVES: The purpose of this study was to 1) assess the MM needs of school nurses in Minnesota, and 2) determine if and how interprofessional partnerships between nurses and pharmacists might optimize MM for students. METHODS: Researchers from the University of Minnesota College of Pharmacy, School Nurse Organization of Minnesota, and Minnesota Department of Health conducted a 32-item online survey of school nurses...
November 8, 2017: Journal of the American Pharmacists Association: JAPhA
https://www.readbyqxmd.com/read/29127209/counseling-on-sun-protection-and-indoor-tanning
#17
Sophie J Balk, Elizabeth A Gottschlich, Dawn M Holman, Meg Watson
BACKGROUND: The US Preventive Services Task Force recommends clinical counseling for individuals ages 10 to 24 years to decrease skin cancer risk. METHODS: A national, random sample of US American Academy of Pediatrics members practicing primary care in 2002 (response rate 55%) and 2015 (response rate 43%). Surveys explored attitudes and experiences regarding sun protection counseling; indoor tanning questions were added in 2015. χ(2) tests compared demographics and counseling responses across years, and multivariable logistic regression models examined counseling predictors...
November 10, 2017: Pediatrics
https://www.readbyqxmd.com/read/29126999/on-the-use-of-liposome-controls-in-studies-investigating-the-clinical-potential-of-extracellular-vesicle-based-drug-delivery-systems-a-commentary
#18
REVIEW
Kasper Bendix Johnsen, Johann Mar Gudbergsson, Meg Duroux, Torben Moos, Thomas Lars Andresen, Jens Bæk Simonsen
The field of extracellular vesicle (EV)-based drug delivery systems has evolved significantly through the recent years, and numerous studies suggest that these endogenous nanoparticles can function as efficient drug delivery vehicles in a variety of diseases. Many characteristics of these EV-based drug delivery vehicles suggest them to be superior at residing in the systemic circulation and possibly at mediating therapeutic effects compared to synthetic drug delivery vehicles, e.g. liposomes. In this Commentary, we discuss how some currently published head-to-head comparisons of EVs versus liposomes are weakened by the inadequate choice of liposomal formulation, and encourage researchers to implement better controls to show any potential superiority of EVs over other synthetic nanoparticles...
November 7, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29124546/fast-neural-dynamics-of-proactive-cognitive-control-in-a-task-switching-analogue-of-the-wisconsin-card-sorting-test
#19
Gema Díaz-Blancat, Juan García-Prieto, Fernando Maestú, Francisco Barceló
One common assumption has been that prefrontal executive control is mostly required for target detection (Posner and Petersen in Ann Rev Neurosci 13:25-42, 1990). Alternatively, cognitive control has also been related to anticipatory updating of task-set (contextual) information, a view that highlights proactive control processes. Frontoparietal cortical networks contribute to both proactive control and reactive target detection, although their fast dynamics are still largely unexplored. To examine this, we analyzed rapid magnetoencephalographic (MEG) source activations elicited by task cues and target cards in a task-cueing analogue of the Wisconsin Card Sorting Test...
November 9, 2017: Brain Topography
https://www.readbyqxmd.com/read/29122721/a-common-periodic-representation-of-interaural-time-differences-in-mammalian-cortex
#20
Nelli H Salminen, Simon J Jones, Gestur B Christianson, Torsten Marquardt, David McAlpine
Binaural hearing, the ability to detect small differences in the timing and level of sounds at the two ears, underpins the ability to localize sound sources along the horizontal plane, and is important for decoding complex spatial listening environments into separate objects - a critical factor in 'cocktail-party listening'. For human listeners, the most important spatial cue is the interaural time difference (ITD). Despite many decades of neurophysiological investigations of ITD sensitivity in small mammals, and computational models aimed at accounting for human perception, a lack of concordance between these studies has hampered our understanding of how the human brain represents and processes ITDs...
November 6, 2017: NeuroImage
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