130,456 research outputs found

    Corrigendum to ‘‘The truth about cognitive impairment in functional motor symptoms: An experimental deception study with the Guilty Knowledge Task” [J Clin Neurosci 64 (2019) 174–179]

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    The authors regret to inform that the affiliation of the author Fabiana Ruggiero was incorrectly published. The correct affiliation, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, is shown above. The authors would like to apologise for any inconvenience caused

    MeSH term explosion and author rank improve expert recommendations

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    Information overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank

    An exploratory spatial analysis of geographical inequalities of birth intervals among young women in the Democratic Republic of Congo (DRC) : a cross-sectional study

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    Background: The length of time between two successive live births (birth interval), is associated with child survival in the developing world. Short birth intervals (<24 months) contribute to infant and child mortality risks. Contraceptive use contributes to a reduction in short birth intervals, but evidence is lacking in the DRC. We aimed to investigate the proportion of short birth intervals at the provincial level among young women in the DRC. Methods: Data from the Demographic and Health Survey undertaken in the DRC in 2007 were analyzed. Logistic regression and Bayesian geo-additive models were used to explain provincial inequalities in short birth intervals among women of reproductive age and young women. Posterior odds ratio (OR) and 95% credible region (CR) were estimated via Markov chain Monte Carlo (MCMC) techniques. Posterior spatial effects and the associated posterior probability maps were produced at the provincial-level to highlight provinces with a significant higher risk of short birth interval. Results: The overall proportion of short birth intervals among all women of reproductive age (15–49 years) and young women (15–24 years) were 30.2% and 38.7% respectively. In multivariate Bayesian geo-additive regression analyses, among the whole sample of women, living in rural areas [OR = 1.07, 95% CR: (0.97, 1.17)], exclusive breastfeeding [1.08 (1.00, 1.17)] and women with primary education [1.06 (1.00, 1.16)], were consistently associated with a higher risk of short birth intervals. For the young women, none of the factors considered were associated with the risk of short birth interval except a marginal effect from the lack of education. There was a spatial variation in the proportion of women reporting short birth intervals and among all women of reproductive age across provinces, with Nord-Kivu [1.12 (1.02, 1.24)], Sud Kivu [1.17 (1.05, 1.29)] and Kasai Occidental [1.18 (1.06, 1.32)] reporting a higher risk of short birth intervals. For young women, the higher risk provinces were Nord-Kivu [1.22 (1.00, 1.54)] and Sud Kivu [1.34 (1.14, 1.63)]. Conclusions: This study suggests distinct geographic patterns in the proportion of short birth intervals among Congolese women, as well as the potential role of demographic and geographic location factors driving the ongoing higher youth fertility, higher childhood and maternal mortality in the DRC

    Anorexia Nervosa and Functional Motor Symptoms : Two Faces of the Same Coin?

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    The aim of this study was to compare anorexia nervosa (AN) patients and functional motor symptoms (FMS) patients by assessing their variability in demographic and clinical characteristics, risk factors, precipitators, and family history. The authors assessed levels of depression and anxiety, alexithymia, dissociation, body awareness, self-objectification, and interoception in the two groups, using 20 healthy controls (HCs) as a control group for psychometric assessment and for interoception. Unexpectedly, no differences in the three groups were observed for the measures related to awareness of physical state, including body awareness, self-objectification, and interoceptive ability via the heartbeat task. However, the AN and FMS groups were not different from each other but were different from the HC group with regard to anxiety, depression, alexithymia, and dissociation. In light of the similarities found, these data support the hypothesis of a common etiology involving emotional dysfunction in both disorders. These findings suggest that AN and FMS may be disorders belonging to the same spectrum (where emotional dysregulation is a key feature) and that there exist potential opportunities for collaborative, integrated investigations of etiology, diagnosis, and management of these disorders

    The neuromodulatory effect of tDCS in patients affected by functional motor symptoms: an exploratory study

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    Background: Recent studies have shown how emotional and cognitive factors might combine together to determine the onset and maintenance of functional motor symptoms (FMS). Nevertheless, no studies have assessed whether brain circuits involved in regulation and processing of emotions and attention might be influenced by neuromodulation. The purpose of this study was to evaluate the effect of a single anodic tDCS session over the right posterior parietal cortex in subjects with FMS and in healthy individuals. Materials and methods: Nine patients and seven healthy subjects underwent two sessions of tDCS (real and sham), in a randomized order. At the end of each session, all participants underwent the heart beat detection task (interoceptive sensitivity) and the Posner paradigm (spatial attention). Results: After sham stimulation, patients with FMS showed significantly lower interoceptive sensitivity and greater cueing effect for reaction times at the Posner paradigm than healthy controls. There was a significant improvement between the levels of interoceptive sensitivity after real and sham stimulation in the whole group of participants and in the group of patients with FMS. Conclusions: Our study provides first indications for a neuromodulatory effect of a single anodic tDCS session over the right posterior parietal cortex on interoceptive sensitivity in subjects with FMS

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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