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https://www.readbyqxmd.com/read/28317848/polyphonic-sonification-of-electrocardiography-signals-for-diagnosis-of-cardiac-pathologies
#1
Jakob Nikolas Kather, Thomas Hermann, Yannick Bukschat, Tilmann Kramer, Lothar R Schad, Frank Gerrit Zöllner
Electrocardiography (ECG) data are multidimensional temporal data with ubiquitous applications in the clinic. Conventionally, these data are presented visually. It is presently unclear to what degree data sonification (auditory display), can enable the detection of clinically relevant cardiac pathologies in ECG data. In this study, we introduce a method for polyphonic sonification of ECG data, whereby different ECG channels are simultaneously represented by sound of different pitch. We retrospectively applied this method to 12 samples from a publicly available ECG database...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28303355/false-memory-susceptibility-in-coma-survivors-with-and-without-a-near-death-experience
#2
Charlotte Martial, Vanessa Charland-Verville, Hedwige Dehon, Steven Laureys
It has been postulated that memories of near-death experiences (NDEs) could be (at least in part) reconstructions based on experiencers' (NDErs) previous knowledge and could be built as a result of the individual's attempt to interpret the confusing experience. From the point of view of the experiencer, NDE memories are perceived as being unrivalled memories due to its associated rich phenomenology. However, the scientific literature devoted to the cognitive functioning of NDErs in general, and their memory performance in particular, is rather limited...
March 16, 2017: Psychological Research
https://www.readbyqxmd.com/read/28287795/undermining-position-effects-in-choices-from-arrays-with-implications-for-police-lineups
#3
Matthew A Palmer, James D Sauer, Glenys A Holt
Choices from arrays are often characterized by position effects, such as edge-aversion. We investigated position effects when participants attempted to pick a suspect from an array similar to a police photo lineup. A reanalysis of data from 2 large-scale field studies showed that choices made under realistic conditions-closely matching eyewitness identification decisions in police investigations-displayed edge-aversion and bias to choose from the top row (Study 1). In a series of experiments (Studies 2a-2c and 3), participants guessing the location of a suspect exhibited edge-aversion regardless of whether the lineup was constructed to maximize the chances of the suspect being picked, to ensure the suspect did not stand out, or randomly...
March 2017: Journal of Experimental Psychology. Applied
https://www.readbyqxmd.com/read/28284556/morphology-and-morphometry-of-the-lung-in-corn-snakes-pantherophis-guttatus-infected-with-three-different-strains-of-ferlavirus
#4
J M Starck, A Neul, V Schmidt, T Kolb, S Franz-Guess, D Balcecean, M Pees
Ophidian paramyxovirus (ferlavirus) is a global threat to reptilian sauropsids in herpetological collections, with occasional but fatal effects. This study characterizes the effects of three different genetic strains of ferlavirus on the dynamic changes of histology and morphometry of the lung of corn snakes (Pantherophis guttatus). Lungs from 42 corn snakes were either sham-infected or infected experimentally under standardized conditions. From 4 to 49 days after intratracheal inoculation, the lungs were examined qualitatively and quantitatively...
March 8, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28279272/guess-that-diagnosis-kitchen-table%C3%A2-rounds
#5
Sara Epstein
No abstract text is available yet for this article.
March 2017: Chest
https://www.readbyqxmd.com/read/28278312/spatial-filtering-color-constancy-and-the-color-changing-dress
#6
Erica L Dixon, Arthur G Shapiro
The color-changing dress is a 2015 Internet phenomenon in which the colors in a picture of a dress are reported as blue-black by some observers and white-gold by others. The standard explanation is that observers make different inferences about the lighting (is the dress in shadow or bright yellow light?); based on these inferences, observers make a best guess about the reflectance of the dress. The assumption underlying this explanation is that reflectance is the key to color constancy because reflectance alone remains invariant under changes in lighting conditions...
March 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28270782/temporal-preparation-for-speaking-in-question-answer-sequences
#7
Lilla Magyari, Jan P De Ruiter, Stephen C Levinson
In every-day conversations, the gap between turns of conversational partners is most frequently between 0 and 200 ms. We were interested how speakers achieve such fast transitions. We designed an experiment in which participants listened to pre-recorded questions about images presented on a screen and were asked to answer these questions. We tested whether speakers already prepare their answers while they listen to questions and whether they can prepare for the time of articulation by anticipating when questions end...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28257789/toward-a-general-theory-of-momentum-like-effects
#8
REVIEW
Timothy L Hubbard
The future actions, behaviors, and outcomes of objects, individuals, and processes can often be anticipated, and some of these anticipations have been hypothesized to result from momentum-like effects. Five types of momentum-like effects (representational momentum, operational momentum, attentional momentum, behavioral momentum, psychological momentum) are briefly described. Potential similarities involving properties of momentum-like effects (continuation, coherence, role of chance or guessing, role of sensory processing, imperviousness to practice or error feedback, shifts in memory for position, effects of changes in velocity, rapid occurrence, effects of retention interval, attachment to an object rather than an abstract frame of reference, nonrigid transformation) are described, and potential constraints on a future theory of momentum-like effects (dynamic representation, nature of extrapolation, sensitivity to environmental contingencies, bridging gaps between stimulus and response, increasing adaptiveness to the environment, serving as a heuristic for perception and action, insensitivity to stimulus format, importance of subjective consequences, role of knowledge and belief, automaticity of occurrence, properties of functional architecture) are discussed...
February 28, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28256513/motor-planning-flexibly-optimizes-performance-under-uncertainty-about-task-goals
#9
Aaron L Wong, Adrian M Haith
In an environment full of potential goals, how does the brain determine which movement to execute? Existing theories posit that the motor system prepares for all potential goals by generating several motor plans in parallel. One major line of evidence for such theories is that presenting two competing goals often results in a movement intermediate between them. These intermediate movements are thought to reflect an unintentional averaging of the competing plans. However, normative theories suggest instead that intermediate movements might actually be deliberate, generated because they improve task performance over a random guessing strategy...
March 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/28248958/fidelity-of-the-representation-of-value-in-decision-making
#10
Paul M Bays, Ben A Dowding
The ability to make optimal decisions depends on evaluating the expected rewards associated with different potential actions. This process is critically dependent on the fidelity with which reward value information can be maintained in the nervous system. Here we directly probe the fidelity of value representation following a standard reinforcement learning task. The results demonstrate a previously-unrecognized bias in the representation of value: extreme reward values, both low and high, are stored significantly more accurately and precisely than intermediate rewards...
March 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28236749/the-self-attribution-bias-and-paranormal-beliefs
#11
Michiel van Elk
The present study investigated the relation between paranormal beliefs, illusory control and the self-attribution bias, i.e., the motivated tendency to attribute positive outcomes to oneself while negative outcomes are externalized. Visitors of a psychic fair played a card guessing game and indicated their perceived control over randomly selected cards as a function of the congruency and valence of the card. A stronger self-attribution bias was observed for paranormal believers compared to skeptics and this bias was specifically related to traditional religious beliefs and belief in superstition...
March 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28229487/the-mourning-process-of-older-people-with-dementia-who-lost-their-spouse
#12
Akiko Watanabe, Sayuri Suwa
AIMS: To explore the mourning process of people with dementia who have lost their spouse, using family caregivers' and professionals' perspectives and to devise grief care for people with dementia. BACKGROUND: There have been studies on the loss of one's spouse; however, little is known about widows and widowers with dementia as they may find it hard to tell their perception and feelings to others accurately because of cognitive impairment. DESIGN: Qualitative descriptive study using semi-structured interviews...
February 22, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28225288/screenpro-fh-screening-project-for-familial-hypercholesterolemia-in-central-southern-and-eastern-europe-basic-epidemiology
#13
Richard Češka, Tomáš Freiberger, Andrey V Susekov, György Paragh, Željko Reiner, Lale Tokgözoğlu, Katarína Rašlová, Maciej Banach, Branislav Vohnout, Andrzej Rynkiewicz, Assen Goudev, Gheorghe-Andrei Dan, Dan Gaiţă, Belma Pojskić, Ivan Pećin, Meral Kayıkçıoğlu, Olena Mitchenko, Marat V Ezhov, Gustavs Latkovskis, Žaneta Petrulionienė, Zlatko Fras, Nebojsa Tasić, Erkin M Mirrakhimov, Tolkun Murataliev, Alexander B Shek, Vladimír Tuka, Alexandros D Tselepis, Elie M Moubarak, Khalid Al Rasadi
INTRODUCTION: Despite great recent progress, familial hypercholesterolemia (FH) is still underestimated, under-diagnosed and thus undertreated worldwide. We have very little information on exact prevalence of patients with FH in the Central, Eastern and Southern Europe (CESE) region. The aim of the study was to describe the epidemiological situation in the CESE region from data available. METHODS: All local leaders of the ScreenPro FH project were asked to provide local data on (a) expert guess of FH prevalence (b) the medical facilities focused on FH already in place (c) the diagnostic criteria used (d) the number of patients already evidenced in local database and (e) the availability of therapeutic options (especially plasma apheresis)...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28222685/evaluation-of-the-accuracy-of-imputed-sequence-variant-genotypes-and-their-utility-for-causal-variant-detection-in-cattle
#14
Hubert Pausch, Iona M MacLeod, Ruedi Fries, Reiner Emmerling, Phil J Bowman, Hans D Daetwyler, Michael E Goddard
BACKGROUND: The availability of dense genotypes and whole-genome sequence variants from various sources offers the opportunity to compile large datasets consisting of tens of thousands of individuals with genotypes at millions of polymorphic sites that may enhance the power of genomic analyses. The imputation of missing genotypes ensures that all individuals have genotypes for a shared set of variants. RESULTS: We evaluated the accuracy of imputation from dense genotypes to whole-genome sequence variants in 249 Fleckvieh and 450 Holstein cattle using Minimac and FImpute...
February 21, 2017: Genetics, Selection, Evolution: GSE
https://www.readbyqxmd.com/read/28217245/genome-wide-association-test-of-multiple-continuous-traits-using-imputed-snps
#15
Baolin Wu, James S Pankow
More and more large cohort studies have conducted or are conducting genome-wide association studies (GWAS) to reveal the genetic components of many complex human diseases. These large cohort studies often collected a broad array of correlated phenotypes that reflect common physiological processes. By jointly analyzing these correlated traits, we can gain more power by aggregating multiple weak effects and shed light on the mechanisms underlying complex human diseases. The majority of existing multi-trait association test methods are based on jointly modeling the multivariate traits conditional on the genotype as covariate, and can readily accommodate the imputed SNPs by using their imputed dosage as a covariate...
2017: Statistics and its Interface
https://www.readbyqxmd.com/read/28211193/sequential-allocation-trial-design-in-anesthesia-an-introduction-to-methods-modeling-and-clinical-applications
#16
REVIEW
Matthias Görges, Guohai Zhou, Rollin Brant, J Mark Ansermino
Estimation of the dose-response curve for new anesthetic protocols typically focuses on identifying minimum effective doses. The application of a sequential experimental method is appropriate, as it minimizes sample size requirements by updating dose assignments based on information accrued from successive subjects. One approach is the up-and-down method for estimating the median effective dose in a patient population (ED50 ). Designs better suited for achieving greater than 50% effectiveness, include the biased coin approach, and continual reassessment method...
March 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28211180/slope-of-psychometric-functions-and-termination-rule-analysis-for-low-contrast-acuity-charts
#17
Andrew Carkeet, Ian L Bailey
PURPOSE: To assess whether the slopes of psychometric functions for measuring low contrast letter acuity were different from those for measuring high contrast letter acuity. METHODS: Ten participants, wearing their best spectacle correction, were assessed monocularly. Stimuli were logarithmic progression charts, generated on a computer monitor, with nine rows of five randomised Sloan letters generated in either high contrast format (Weber contrast 99.2%) or low contrast format (Weber contrast 18...
March 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28210564/more-misinformation-on-breast-cancer-screening
#18
COMMENT
Daniel B Kopans
Unfortunately, a great deal of misinformation has accumulated in the breast cancer screening literature that is based on flawed analyses in an effort to reduce access to screening. Quite remarkably, much of this has come from publications in previously highly respected medical journals. In several papers the intervention (mammography screening) is faulted yet the analyses provided no data on who participated in mammography screening, and which cancers were detected by mammography screening. It is remarkable that a highly respected journal can fault an intervention with no data on the intervention...
February 2017: Gland Surgery
https://www.readbyqxmd.com/read/28209521/impaired-visual-competition-in-patients-with-homonymous-visual-field-defects
#19
A C Geuzebroek, A V van den Berg
Intense visual training can lead to partial recovery of visual field defects caused by lesions of the primary visual cortex. However, the standard visual detection and discrimination tasks, used to assess this recovery process tend to ignore the complexity of the natural visual environment, where multiple stimuli continuously interact. Visual competition is an essential component for natural search tasks and detecting unexpected events. Our study focused on visual decision-making and to what extent the recovered visual field can compete for attention with the 'intact' visual field...
February 13, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28191593/learning-from-a-contemporary-history-of-immunology
#20
REVIEW
Melvin Cohn
This essay is a selected aspect of the history of contemporary immunology seen from a "what can we learn" point of view. It is limited to the ideas and experiments from which we might draw a take-home message. The emphasis is on the convoluted pathway that was actually used by immunologists to arrive at understanding compared to the direct pathway that could have been used given the knowledge at that time. It takes the reader through the instructionist era of the 1940s to the present by stressing the elements of thinking most conducive to the arrival at a default understanding of the intact immune system...
February 13, 2017: Immunologic Research
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