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Neuroscience trends

Erica K Salter
Whether adolescents should be allowed to make their own medical decisions has been a topic of discussion in bioethics for at least two decades now. Are adolescents sufficiently capacitated to make their own medical decisions? Is the mature-minor doctrine, an uncommon legal exception to the rule of parental decision-making authority, something we should expand or eliminate? Bioethicists have dealt with the curious liminality of adolescents-their being neither children nor adults-in a variety of ways. However, recently there has been a trend to rely heavily, and often exclusively, on emerging neuroscientific and psychological data to answer these questions...
January 2017: Hastings Center Report
Jacqueline R Finger, Lisa M Kurczewski, Gretchen M Brophy
BACKGROUND: Currently, a lack of published literature exists regarding the use of clevidipine in the neuroscience population. This agent may be preferred in some patients because of its short half-life, potentially leading to more narrow blood pressure (BP) control in comparison with other agents. The purpose of this study was to compare the difference in time to achieve target systolic blood pressure (SBP) goals with clevidipine versus nicardipine infusions in patients admitted to the neuroscience intensive care unit (NSICU) at our institution...
December 19, 2016: Neurocritical Care
Yan Ma, Ming Dong, Kehua Zhou, Carol Mita, Jianping Liu, Peter M Wayne
OBJECTIVE: Acupuncture has become popular and widely practiced in many countries around the world. Despite the large amount of acupuncture-related literature that has been published, broader trends in the prevalence and scope of acupuncture research remain underexplored. The current study quantitatively analyzes trends in acupuncture research publications in the past 20 years. METHODS: A bibliometric approach was used to search PubMed for all acupuncture-related research articles including clinical and animal studies...
2016: PloS One
Lucy V Hiscox, Curtis L Johnson, Eric Barnhill, Matt D J McGarry, John Huston, Edwin J R van Beek, John M Starr, Neil Roberts
Neurological disorders are one of the most important public health concerns in developed countries. Established brain imaging techniques such as magnetic resonance imaging (MRI) and x-ray computerised tomography (CT) have been essential in the identification and diagnosis of a wide range of disorders, although usually are insufficient in sensitivity for detecting subtle pathological alterations to the brain prior to the onset of clinical symptoms-at a time when prognosis for treatment is more favourable. The mechanical properties of biological tissue provide information related to the strength and integrity of the cellular microstructure...
December 21, 2016: Physics in Medicine and Biology
L A Pastur-Romay, A B Porto-Pazos, F Cedrón, A Pazos
The human brain is the most complex system in the known universe, but it is the most unknown system. It allows the human beings to possess extraordinary capacities. However, we don´t understand yet how and why most of these capacities are produced. For decades, it have been tried that the computers reproduces these capacities. On one hand, to help understanding the nervous system. On the other hand, to process the data in a more efficient way than before. It is intended to make the computers process the information like the brain does it...
November 4, 2016: Current Topics in Medicinal Chemistry
Pamela Sarkar, Alice Cole, Neil J Scolding, Claire M Rice
Background/Aims: With the notable exceptions of dementia, stroke, and motor neuron disease, relatively little is known about the safety and utility of percutaneous endoscopic gastrostomy (PEG) tube insertion in patients with neurodegenerative disease. We aimed to determine the safety and utility of PEG feeding in the context of neurodegenerative disease and to complete a literature review in order to identify whether particular factors need to be considered to improve safety and outcome...
October 13, 2016: Clinical Endoscopy
Vincenzo Romei, Gregor Thut, Juha Silvanto
Progress in cognitive neuroscience relies on methodological developments to increase the specificity of knowledge obtained regarding brain function. For example, in functional neuroimaging the current trend is to study the type of information carried by brain regions rather than simply compare activation levels induced by task manipulations. In this context noninvasive transcranial brain stimulation (NTBS) in the study of cognitive functions may appear coarse and old fashioned in its conventional uses. However, in their multitude of parameters, and by coupling them with behavioral manipulations, NTBS protocols can reach the specificity of imaging techniques...
September 30, 2016: Trends in Neurosciences
Isabelle Lajoie, Felipe B Tancredi, Richard D Hoge
The current generation of calibrated MRI methods goes beyond simple localization of task-related responses to allow the mapping of resting-state cerebral metabolic rate of oxygen (CMRO2) in micromolar units and estimation of oxygen extraction fraction (OEF). Prior to the adoption of such techniques in neuroscience research applications, knowledge about the precision and accuracy of absolute estimates of CMRO2 and OEF is crucial and remains unexplored to this day. In this study, we addressed the question of methodological precision by assessing the regional inter-subject variance and intra-subject reproducibility of the BOLD calibration parameter M, OEF, O2 delivery and absolute CMRO2 estimates derived from a state-of-the-art calibrated BOLD technique, the QUantitative O2 (QUO2) approach...
2016: PloS One
Diego A Angulo, Cyril Schneider, James H Oliver, Nathalie Charpak, Jose T Hernandez
Brain research typically requires large amounts of data from different sources, and often of different nature. The use of different software tools adapted to the nature of each data source can make research work cumbersome and time consuming. It follows that data is not often used to its fullest potential thus limiting exploratory analysis. This paper presents an ancillary software tool called BRAVIZ that integrates interactive visualization with real-time statistical analyses, facilitating access to multi-facetted neuroscience data and automating many cumbersome and error-prone tasks required to explore such data...
2016: Frontiers in Neuroinformatics
Joyce Keifer, Cliff H Summers
Current trends in neuroscience research have moved toward a reliance on rodent animal models to study most aspects of brain function. Such laboratory-reared animals are highly inbred, have been disengaged from their natural environments for generations and appear to be of limited predictive value for successful clinical outcomes. In this Perspective article, we argue that research on a rich diversity of animal model systems is fundamental to new discoveries in evolutionarily conserved core physiological and molecular mechanisms that are the foundation of human brain function...
2016: Frontiers in Systems Neuroscience
Nicole E Sunderland, Nancy E Villanueva, Susan J Pazuchanics
Intracranial pressure (ICP) monitoring can be an important assessment tool in critically and acutely ill patients. An external ventricular drain offers a comprehensive way to monitor ICP and drain cerebrospinal fluid. The Monro-Kellie hypothesis, Pascal's principle, and fluid dynamics were used to formulate an assumption that an open/monitor position on the stopcock is an adequate trending measure for ICP monitoring while concurrently draining cerebrospinal fluid. Data were collected from 50 patients and totaled 1053 separate number sets...
October 2016: Journal of Neuroscience Nursing: Journal of the American Association of Neuroscience Nurses
Katherine Bain, Jade Richards
OBJECTIVE: This paper examines maternal knowledge regarding perinatal and infant mental health amongst mothers in Alexandra township, Johannesburg. The applicability and utility of these Western-derived concepts in a low socio-economic South African setting is examined. METHOD: A concurrent mixed methods approach was used. Descriptive statistical analysis was conducted on the responses of 255 mothers on a structured questionnaire, designed to elicit levels of knowledge about the relational needs and awareness of infants and the psychosocial needs of mothers, to determine trends in mothers' knowledge...
July 2016: Journal of Child and Adolescent Mental Health
Geoffrey A Manley
Comparative auditory studies make it possible both to understand the origins of modern ears and the factors underlying the similarities and differences in their performance. After all lineages of land vertebrates had independently evolved tympanic middle ears in the early Mesozoic era, the subsequent tens of millions of years led to the hearing organ of lizards, birds, and mammals becoming larger and their upper frequency limits higher. In extant species, lizard papillae remained relatively small (<2 mm), but avian papillae attained a maximum length of 11 mm, with the highest frequencies in both groups near 12 kHz...
August 18, 2016: Journal of the Association for Research in Otolaryngology: JARO
Anthony J Turner, Natalia N Nalivaeva, Frode Fonnum, Keith F Tipton, Laura Hausmann, Jörg B Schulz
This review reflects on the origins, development, publishing trends, and scientific directions of the Journal of Neurochemistry over its 60 year lifespan as seen by key contributors to the Journal's production. The Journal first appeared in May 1956 with just two issues published in that inaugural year. By 1963, it appeared monthly and, by 2002, 24 hard copy issues were published yearly. In 2014, the Journal became online only. For much of its time, the Journal was managed through two separate editorial offices each with their respective Chief Editor (the 'Western' and 'Eastern' hemispheres)...
August 17, 2016: Journal of Neurochemistry
Megan Smith Valentine, Judith L Van Houten
Paramecium is a useful model organism for the study of ciliary-mediated chemical sensing and response. Here we describe ways to take advantage of Paramecium to study chemoresponse.Unicellular organisms like the ciliated protozoan Paramecium sense and respond to chemicals in their environment (Van Houten, Ann Rev Physiol 54:639-663, 1992; Van Houten, Trends Neurosci 17:62-71, 1994). A thousand or more cilia that cover Paramecium cells serve as antennae for chemical signals, similar to ciliary function in a large variety of metazoan cell types that have primary or motile cilia (Berbari et al...
2016: Methods in Molecular Biology
Mike Hemberger, Lorenz Pammer, Gilles Laurent
Recent trends in neuroscience have narrowed the scope of this field, notably through the progressive elimination of 'model systems' that were key to the development of modern molecular, developmental and functional neuroscience. Although the fantastic opportunities offered by modern molecular biology entirely justify the use of selected organisms (e.g., for their genetic advantages), we argue that a diversity of model systems is essential if we wish to identify the brain's computational principles. It is through comparisons that we can hope to separate mechanistic details (results of each organism's specific history) from functional principles, those that will hopefully one day lead to a theory of the brain...
August 6, 2016: Current Opinion in Neurobiology
Darya L Zabelina, Jessica R Andrews-Hanna
Recent advances in systems neuroscience have solidified the view that many cognitive processes are supported by dynamic interactions within and between large-scale brain networks. Here we synthesize this research, highlighting dynamic network interactions supporting a less explored aspect of cognition with important clinical relevance: internally-oriented cognition. We first present a brief overview of established resting-state networks, focusing on those supporting internally-oriented cognition, as well as those involved in dynamic control...
July 12, 2016: Current Opinion in Neurobiology
Simon Buttrick, Kristy OʼPhelan, Kenneth Goodman, Ronald Jay Benveniste
INTRODUCTION: Our health care system spends a significant amount of resources on futile care, ie, continued medical therapy when there is no reasonable hope of cure or benefit. Nowhere is this more evident than in the neuroscience intensive care unit (NSICU), because intensive care medicine has become exceedingly proficient at maintaining cardiopulmonary function even in the face of catastrophic brain injury. METHODS: We identified patients who were admitted to the NSICU with partial loss of brainstem reflexes even after initial stabilization...
August 2016: Neurosurgery
Nat Ato Yawson, Aaron Opoku Amankwaa, Bernice Tali, Velma Owusua Shang, Emmanuella Nsenbah Batu, Kwame Asiemoah, Ahmed Denkeri Fuseini, Louis Nana Tene, Leticia Angaandi, Isaac Blewusi, Makafui Borbi, Linda Nana Esi Aduku, Pheonah Badu, Henrietta Abbey, Thomas K Karikari
The scientific capacity in many African countries is low. Ghana, for example, is estimated to have approximately twenty-three researchers per a million inhabitants. In order to improve interest in science among future professionals, appropriate techniques should be developed and employed to identify barriers and correlates of science education among pre-university students. Young students' attitudes towards science may affect their future career choices. However, these attitudes may change with new experiences...
2016: Journal of Undergraduate Neuroscience Education: JUNE: a Publication of FUN, Faculty for Undergraduate Neuroscience
A K M Rezaul Karim, Michael J Proulx, Lora T Likova
Orientation bias and directionality bias are two fundamental functional characteristics of the visual system. Reviewing the relevant literature in visual psychophysics and visual neuroscience we propose here a three-stage model of directionality bias in visuospatial functioning. We call this model the 'Perception-Action-Laterality' (PAL) hypothesis. We analyzed the research findings for a wide range of visuospatial tasks, showing that there are two major directionality trends in perceptual preference: clockwise versus anticlockwise...
September 2016: Neuroscience and Biobehavioral Reviews
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