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https://www.readbyqxmd.com/read/28813935/influence-of-artifacts-on-movement-intention-decoding-from-eeg-activity-in-severely-paralyzed-stroke-patients
#1
Eduardo Lopez-Larraz, Carlos Bibian, Niels Birbaumer, Ander Ramos-Murguialday
Brain-machine interfaces (BMI) can be used to control robotic and prosthetic devices for rehabilitation of motor disorders, such as stroke. The calibration of these BMI systems is of paramount importance in order to establish a precise contingent link between the brain activity related to movement intention and the peripheral feedback. However, electroencephalographic (EEG) activity, commonly used to build non-invasive BMIs, can be easily contaminated by artifacts of electrical or physiological origin. The way these interferences can affect the performance of movement intention decoders has not been deeply studied, especially when dealing with severely paralyzed patients, which often generate more artifacts by compensatory movements...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813934/a-hybrid-brain-machine-interface-based-on-eeg-and-emg-activity-for-the-motor-rehabilitation-of-stroke-patients
#2
Andrea Sarasola-Sanz, Nerea Irastorza-Landa, Eduardo Lopez-Larraz, Carlos Bibian, Florian Helmhold, Doris Broetz, Niels Birbaumer, Ander Ramos-Murguialday
Including supplementary information from the brain or other body parts in the control of brain-machine interfaces (BMIs) has been recently proposed and investigated. Such enriched interfaces are referred to as hybrid BMIs (hBMIs) and have been proven to be more robust and accurate than regular BMIs for assistive and rehabilitative applications. Electromyographic (EMG) activity is one of the most widely utilized biosignals in hBMIs, as it provides a quite direct measurement of the motion intention of the user...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813627/the-impact-on-resource-utilization-of-supportive-care-consults-on-patients-at-the-university-of-north-carolina-hospital-2010-2012
#3
Kristen Westfall, Dominic Moore, Matthew Meeneghan, Sandra Jarr, John Valgus, Stephen Bernard
BACKGROUND: Cancer patients have a high rate of emergency department (ED) visits and inpatient hospitalizations (IHs) that may be reduced by use of outpatient palliative care services. OBJECTIVE: To determine whether the outpatient adult palliative care service at the University of North Carolina (UNC) Hospital, begun in 2008, reduced the frequency of ED visits and IH during a two-year period. DESIGN: The charts of patients with lung cancer or head and neck cancer seen by the supportive care service from 2010 to 2011, and of a contemporaneous set of potential consults that were not seen, were retrospectively reviewed to determine the impact of this care delivery model...
August 16, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28813248/early-stress-parental-motivation-and-reproductive-decision-making-applications-of-life-history-theory-to-parental-behavior
#4
REVIEW
Tomás Cabeza de Baca, Bruce J Ellis
This review focuses on the impact of parental behavior on child development, as interpreted from an evolutionary-developmental perspective. We employ psychosocial acceleration theory to reinterpret the effects of variation in parental investment and involvement on child development, arguing that these effects have been structured by natural selection to match the developing child to current and expected future environments. Over time, an individual's development, physiology, and behavior are organized in a coordinated manner (as instantiated in 'life history strategies') that facilitates survival and reproductive success under different conditions...
June 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28812741/persistent-tropical-foraging-in-the-highlands-of-terminal-pleistocene-holocene-new-guinea
#5
Patrick Roberts, Dylan Gaffney, Julia Lee-Thorp, Glenn Summerhayes
The terminal Pleistocene/Holocene boundary (approximately 12-8 thousand years ago) represented a major ecological threshold for humans, both as a significant climate transition and due to the emergence of agriculture around this time. In the highlands of New Guinea, climatic and environmental changes across this period have been highlighted as potential drivers of one of the earliest domestication processes in the world. We present a terminal Pleistocene/Holocene palaeoenvironmental record (12-0 thousand years ago ) of carbon and oxygen isotopes in small mammal tooth enamel from the site of Kiowa...
February 6, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28811595/delayed-effects-of-transcriptional-responses-in-mycobacterium-tuberculosis-exposed-to-nitric-oxide-suggest-other-mechanisms-involved-in-survival
#6
Teresa Cortes, Olga T Schubert, Amir Banaei-Esfahani, Ben C Collins, Ruedi Aebersold, Douglas B Young
Mycobacterium tuberculosis has succeeded as a human pathogen for tens of thousands of years thanks to its ability to resist and adapt to the adverse conditions it encounters upon infection. Bacterial adaptation to stress is commonly viewed in the context of transcriptional regulation, with the implicit expectation that an initial transcriptomic response is tightly coupled to an ensuing proteomic response. However, after challenging M. tuberculosis with nitric oxide we found that the rapid transcriptional responses, detectable within minutes of nitric oxide exposure, typically took several hours to manifest on the protein level...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811182/implementing-sustainable-data-collection-for-a-cardiac-outcomes-registry-in-an-australian-public-hospital
#7
Nicholas Cox, Angela Brennan, Diem Dinh, Rita Brien, Kath Cowie, Dion Stub, Christopher M Reid, Jeffrey Lefkovits
BACKGROUND: Clinical outcome registries are an increasingly vital component of ensuring quality and safety of patient care. However, Australian hospitals rarely have additional resources or the capacity to fund the additional staff time to complete the task of data collection and entry. At the same time, registry funding models do not support staff for the collection of data at the site but are directed towards the central registry tasks of data reporting, managing and quality monitoring...
March 12, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28811180/development-of-an-opioid-self-administration-assay-to-study-drug-seeking-in-zebrafish
#8
Gabriel D Bossé, Randall T Peterson
The zebrafish (Danio rerio) has become an excellent tool to study mental health disorders, due to its physiological and genetic similarity to humans, ease of genetic manipulation, and feasibility of small molecule screening. Zebrafish have been shown to exhibit characteristics of addiction to drugs of abuse in non-contingent assays, including conditioned place preference, but contingent assays have been limited to a single assay for alcohol consumption. Using inexpensive electronic, mechanical, and optical components, we developed an automated opioid self-administration assay for zebrafish, enabling us to measure drug seeking and gain insight into the underlying biological pathways...
August 12, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28810817/struggles-over-antibiotics-physicians-stance-taking-toward-a-nonconforming-policy-in-an-intensive-care-unit
#9
Letizia Caronia, Marzia Saglietti
One of the most pressing contemporary health care challenges consists in rethinking antibiotic use to contrast the increase of multidrug resistant bacteria. Drawing on an ethnographic fieldwork in an Intensive Care Unit that adopts a nonconforming policy of antibiotic stewardship, this article analyzes doctor-doctor interaction concerning infectious disease diagnosis and antibiotic treatment. By analyzing examples of medical decision-making from a corpus of video-recorded morning briefings, we focus on physicians' stance-taking toward the ward's nonconforming policy and illustrate how it is contingently situated along a continuum from strong commitment to overt resistance...
August 1, 2017: Qualitative Health Research
https://www.readbyqxmd.com/read/28810421/predictors-of-perceived-vulnerability-to-cancer-diagnoses-among-adult-black-males
#10
Darlingtina K Atakere, Tamara A Baker
As much as the significance of age, education, masculinity, illness attitude, and self-esteem to preventive health have been reported, much less is known on how these factors predict perceived vulnerability to cancer diagnosis. This study aimed to determine the association between identified demographic, health, and social factors and perceived vulnerability to cancer diagnosis among adult Black males. Data reveal that incidences of cancer among Black men are contingent upon a myriad of psychological, social, and behavioral factors that are not exclusive but rather coexisting determinants of health...
February 1, 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28805988/are-behaviors-at-one-alternative-in-concurrent-schedules-independent-of-contingencies-at-the-other-alternative
#11
James S MacDonall
Some have reported changing the schedule at one alternative of a concurrent schedule changed responding at the other alternative (Catania, 1969), which seems odd because no contingencies were changed there. When concurrent schedules are programmed using two schedules, one associated with each alternative that operate continuously, changing the schedule at one alternative also changes the switch schedule at the other alternative. Thus, changes in responding at the constant alternative could be due to the change in the switch schedule...
August 14, 2017: Journal of the Experimental Analysis of Behavior
https://www.readbyqxmd.com/read/28805985/willingness-to-pay-for-antiretroviral-drugs-among-hiv-and-aids-clients-in-south-east-nigeria
#12
Chinyere Mbachu, Chijioke Okoli, Obinna Onwujekwe, Fabian Enabulele
BACKGROUND: The current trend of withdrawal of donor support for HIV/AIDS treatment in Nigeria may require that the cost of antiretroviral drugs be borne in part by infected people and their families. OBJECTIVE: This study was conducted to determine the economic value for free antiretroviral drugs (ARVs) expressed by clients receiving treatment for HIV/AIDS in a tertiary hospital. STUDY METHOD: The contingent valuation method was used to elicit the values attached to free ARVs from people living with HIV/AIDS that were receiving care in a public tertiary hospital in south-east Nigeria...
August 14, 2017: Health Expectations: An International Journal of Public Participation in Health Care and Health Policy
https://www.readbyqxmd.com/read/28805432/strain-dependent-sex-differences-in-a-long-term-forced-swim-paradigm
#13
José Colom-Lapetina, Sabrina L Begley, Megan E Johnson, Kristina J Bean, Whitney N Kuwamoto, Rebecca M Shansky
Women are twice as likely as men to suffer from trauma- and stressor-related disorders. The development of improved therapeutic interventions is contingent upon a more complete grasp of both the neural and behavioral dynamics of the stress response in females. The rodent forced swim test (FST) is a valuable animal model for exploring the neurobiological mechanisms responsible for selection of active and passive responses to inescapable stressors, but it is often neglected in 2-day FST studies is the dissociation of innate (Day 1) versus learned (Day 2) coping responses...
August 14, 2017: Behavioral Neuroscience
https://www.readbyqxmd.com/read/28803332/financial-development-and-oil-resource-abundance-growth-relations-evidence-from-panel-data
#14
Siong Hook Law, Maryam Moradbeigi
This study investigates whether financial development dampens the negative impact of oil resource abundance on economic growth. Because of substantial cross-sectional dependence in our data, which contain a core sample of 63 oil-producing countries from 1980 through 2010, we use the common correlated effect mean group (CCEMG) estimator to account for the high degree of heterogeneity and drop the outlier countries. The empirical results reveal that oil resource abundance affects the growth rate in output contingent on the degree of development in financial markets...
August 12, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28803265/measuring-the-end-of-life-premium-in-cancer-using-individual-ex-ante-willingness-to-pay
#15
S Olofsson, U-G Gerdtham, L Hultkrantz, U Persson
For the assessment of value of new therapies in healthcare, Health Technology Assessment (HTA) agencies often review the cost per quality-adjusted life-year (QALY) gained. Some HTA agencies accept a higher cost per QALY gained when treatment is aimed at prolonging survival for patients with a short expected remaining lifetime, a so-called end-of-life (EoL) premium. The objective of this study is to elicit the existence and size of an EoL premium in cancer. Data was collected from 509 individuals in the Swedish general population 20-80 years old using a web-based questionnaire...
August 12, 2017: European Journal of Health Economics: HEPAC: Health Economics in Prevention and Care
https://www.readbyqxmd.com/read/28796974/benchmarking-aided-decision-making-in-a-signal-detection-task
#16
Megan L Bartlett, Jason S McCarley
OBJECTIVE: A series of experiments examined human operators' strategies for interacting with highly (93%) reliable automated decision aids in a binary signal detection task. BACKGROUND: Operators often interact with automated decision aids in a suboptimal way, achieving performance levels lower than predicted by a statistically ideal model of information integration. To better understand operators' inefficient use of decision aids, we compared participants' automation-aided performance levels with the predictions of seven statistical models of collaborative decision making...
September 2017: Human Factors
https://www.readbyqxmd.com/read/28795826/competition-and-facilitation-in-compound-conditioning
#17
Gonzalo P Urcelay
Despite the generality and theoretical relevance of cue competition phenomena such as blocking and overshadowing, recent findings suggest that these observations may be due to some degree of publication bias, and that we lack insight into the boundary conditions of these phenomena. The present commentary does not question the existence of cue competition phenomena. Rather, I review findings showing that 3 variables, namely (a) relative stimulus duration, (b) contingency, and (c) contiguity parametrically determine not only whether cue competition is observed, but also whether no cue interaction, or cue facilitation occur...
August 10, 2017: Journal of Experimental Psychology. Animal Learning and Cognition
https://www.readbyqxmd.com/read/28794441/tgf%C3%AE-signaling-is-associated-with-changes-in-inflammatory-gene-expression-and-perineuronal-net-degradation-around-inhibitory-neurons-following-various-neurological-insults
#18
Soo Young Kim, Vladimir V Senatorov, Christapher S Morrissey, Kristina Lippmann, Oscar Vazquez, Dan Z Milikovsky, Feng Gu, Isabel Parada, David A Prince, Albert J Becker, Uwe Heinemann, Alon Friedman, Daniela Kaufer
Brain damage due to stroke or traumatic brain injury (TBI), both leading causes of serious long-term disability, often leads to the development of epilepsy. Patients who develop post-injury epilepsy tend to have poor functional outcomes. Emerging evidence highlights a potential role for blood-brain barrier (BBB) dysfunction in the development of post-injury epilepsy. However, common mechanisms underlying the pathological hyperexcitability are largely unknown. Here, we show that comparative transcriptome analyses predict remodeling of extracellular matrix (ECM) as a common response to different types of injuries...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28793223/constraint-and-contingency-pervade-the-emergence-of-novel-phenotypes-in-complex-metabolic-systems
#19
Sayed-Rzgar Hosseini, Andreas Wagner
An evolutionary constraint is a bias or limitation in phenotypic variation that a biological system produces. We know examples of such constraints, but we have no systematic understanding about their extent and causes for any one biological system. We here study metabolisms, genomically encoded complex networks of enzyme-catalyzed biochemical reactions, and the constraints they experience in bringing forth novel phenotypes that allow survival on novel carbon sources. Our computational approach does not limit us to analyzing constrained variation in any one organism, but allows us to quantify constraints experienced by any metabolism...
August 8, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28792544/triple-dissociation-of-duration-perception-regulating-mechanisms-top-down-attention-is-inherent
#20
Yong-Jun Lin, Shinsuke Shimojo
The brain constantly adjusts perceived duration based on the recent event history. One such lab phenomenon is subjective time expansion induced in an oddball paradigm ("oddball chronostasis"), where the duration of a distinct item (oddball) appears subjectively longer when embedded in a series of other repeated items (standards). Three hypotheses have been separately proposed but it remains unresolved which or all of them are true: 1) attention prolongs oddball duration, 2) repetition suppression reduces standards duration, and 3) accumulative temporal preparation (anticipation) expedites the perceived item onset so as to lengthen its duration...
2017: PloS One
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