1,721,043 research outputs found
Mothers' neural activation in response to pictures of their children and other children.
No full textBACKGROUND: Considerable literature has focused on neural responses evoked by face viewing. We extend that literature and explore the neural correlates of maternal attachment with an fMRI study in which mothers view photographs of their own children. METHOD: Seven mothers performed a one-back repetition detection task while viewing photographs of their own child, friends of their child, unfamiliar children, and unfamiliar adults. RESULTS: Viewing one's own child versus a familiar child was associated with activation in the amygdala, insula, anterior paracingulate cortex, and posterior superior temporal sulcus (STS). Viewing familiar versus unfamiliar children elicited increased activation in regions associated with familiarity in adults. Viewing unfamiliar children versus unfamiliar adults was associated with activation in the fusiform gyrus, intraparietal sulcus, precuneus, and posterior STS. CONCLUSIONS: The sight of one's own child versus that of a familiar child activates regions that mediate emotional responses (amygdala, insula) and are associated with theory of mind functions (anterior paracingulate cortex, posterior superior temporal sulcus). These activations may reflect the intense attachment, vigilant protectiveness, and empathy that characterize normal maternal attachment. The sight of an unfamiliar child's face compared with that of an unfamiliar adult engages areas associated with attention as well as face perceptio
Social and emotional attachment in the neural representation of faces.
No full textTo dissociate the role of visual familiarity from the role of social and emotional factors in recognizing familiar individuals, we measured neural activity using functional magnetic resonance imaging (fMRI) while subjects viewed (1) faces of personally familiar individuals (i.e. friends and family), (2) faces of famous individuals, and (3) faces of strangers. Personally familiar faces evoked a stronger response than did famous familiar faces and unfamiliar faces in areas that have been associated with 'theory of mind', and a weaker response in the amygdala. These response modulations may reflect the spontaneous activation of social knowledge about the personality and attitudes of close friends and relatives and the less guarded attitude one has around these people. These results suggest that familiarity causes changes in neural response that extend beyond a visual memory for a face
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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