1,720,956 research outputs found
The metyrapone test in schizophrenic patients and healthy subjects.
No full textThe metyrapone test, a useful and reliable procedure for assessing hypothalamic-pituitary-adrenocortical (HPA) axis function, was applied to schizophrenic patients and healthy controls. 4 out of 18 patients had subnormal responses to metyrapone whereas there were no such cases in the 22 control subjects. 1 schizophrenic patient and 3 control subjects had high normal responses to metyrapone. The relationship with the dexamethasone suppression test was found to be complex. These preliminary results suggest that the HPA axis activity patterns in psychiatric illness may be more complicated than previously reported
The metyrapone test in affective disorders and schizophrenia II. Changes upon treatment.
No full textThe metyrapone test was applied to groups of patients suffering from major depressive illness with melancholia, mania or schizophrenia, before and after treatment. There were interesting individual correlations between post-metyrapone cortexolone values, cortexolone/cortisol ratios and clinical improvement in depressives. Two patients who had exhibited abnormal metyrapone responses displayed a normalization of post-metyrapone cortexolone values upon clinical improvement, whereas the opposite trend was observed in a patient who did not improve and in another who became manic. These preliminary results may indicate that abnormal metyrapone responses in depression are state dependent
The metyrapone test in affective disorders and schizophrenia.
No full textThe metyrapone test was applied to patients suffering from major depressive illness with melancholia, from mania, and from schizophrenia. Hypoactivity of the HPA axis as assessed by the test appears to occur infrequently in affective disorders and schizophrenia. High normal or exaggerated responses to metyrapone, as observed in Cushing's disease, appear to be correlated to DST non-suppression in melancholia
The metyrapone test in manic patients and healthy subjects.
No full textThe metyrapone (Metopiron) test (MT), a useful and reliable procedure for assessing hypothalamic-pituitary-adrenal (HPA) axis function, was applied to manic patients and healthy subjects. Three out of 11 patients had high normal responses to metyrapone, as observed in patients with Cushing's disease. One patient exhibited a subnormal response to metyrapone, as occurs in patients with adrenal insufficiency. No such abnormalities were detected in 11 matched healthy control subjects. These preliminary results suggest that the HPA axis activity patterns in mania may be more complex than previously reported
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
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