180,293 research outputs found

    Patterns of regional brain hypometabolism associated with knowledge of semantic features and categories in Alzheimer's disease

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    The study of semantic memory in patients with Alzheimer's disease (AD) has raised important questions about the representation of conceptual knowledge in the human brain. It is still unknown whether semantic memory impairments are caused by localized damage to specialized regions or by diffuse damage to distributed representations within nonspecialized brain areas. To our knowledge, there have been no direct correlations of neuroimaging of in vivo brain function in AD with performance on tasks differentially addressing visual and functional knowledge of living and nonliving concepts. We used a semantic verification task and resting 18-fluorodeoxyglucose positron emission tomography in a group of mild to moderate AD patients to investigate this issue. The four task conditions required semantic knowledge of (1) visual, (2) functional properties of living objects, and (3) visual or (4) functional properties of nonliving objects. Visual property verification of living objects was significantly correlated with left posterior fusiform gyrus metabolism (Brodmann's area [BA] 37/19). Effects of visual and functional property verification for nonliving objects largely overlapped in the left anterior temporal (BA 38/20) and bilateral premotor areas (BA 6), with the visual condition extending more into left lateral precentral areas. There were no associations with functional property verification for living concepts. Our results provide strong support for anatomically separable representations of living and nonliving concepts, as well as visual feature knowledge of living objects, and against distributed accounts of semantic memory that view visual and functional features of living and nonliving objects as distributed across a common set of brain area

    Hieracium fastuosum ZAHN

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    <i>Hieracium fastuosum</i> ZAHN <p>Salzburg: Lungau, Hohe Tauern, Hafnergruppe, am Weg entlang vom Unteren Rotgüldensee, 47°5’57’’N 13°24’37 u. 38’’E, 8946/1, Grünerlengebüschsäume, Zentralgneis, 1750 u. 1745 m, 12.8 u. 5.9.2004, Nr. 04-339-1 u. 04-397-1.</p> <p> <b>Neu für Österreich</b>. <i>H</i>. <i>fastuosum</i>, ein sehr seltener Endemit der Ostalpen, war bisher nur aus Südtirol (Pfossental, Mühlwaldtal u. Staller Sattel), dem Trentino (Monte Ziolera) und aus Friaul-Julisch-Venetien (Karnische Alpen) bekannt (vgl. ZAHN 1937: 418, GOTTSCHLICH 2001: 584, 2004: 134 (Abb.), 146, 2007: 62, 194/195 (Abb. Lectotypus), 2008a: 18, 2008b: 1013, GOTTSCHLICH & PUJATTI 2002: 301 u. WILHALM et al. 2006: 99). Die in ZAHN (1906: 664 f.) für die Schweiz unter <i>H</i>. <i>fastuosum</i> angeführte Subspezies <i>trichopicris</i> wurde von ihm in seiner monographischen Bearbeitung für "Das Pflanzenreich" (ZAHN 1921: 851) zu <i>H</i>. <i>picroides</i> gezogen.</p> <p>Die fünf herbarisierten Pflanzen vom Rotgüldensee entsprechen im wesentlichen dem Merkmalsspektrum des Typenmaterials im Herbarium Huter (BRIX), das der Verfasser dankenswerterweise über W. Neuner (Herbarium IBF) entlehnen konnte.</p>Published as part of <i>Brandstätter, G., 2009, Bemerkenswerte Hieracium-Funde aus Österreich, pp. 1793-1802 in Linzer biologische Beiträge 41 (2)</i> on pages 1796-1797, DOI: <a href="http://zenodo.org/record/5280189">10.5281/zenodo.5280189</a&gt

    Development of Cognitive and Imaging Biomarkers Predicting Risk of Self-Blaming Bias and Recurrence in Major Depression

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    This data-set consists of fully anonymised task-based fMRI using a value-related moral sentiments task which probes emotions related to self-blame such as guilt and blaming others, such as anger, structural 3 dimensional T1 weighted and resting-state fMRI data for remitted MDD and Healthy Control participants taking part in our studies. Data sharing is stipulated by our MRC-approved data management plan. Basic anonymised clinical and demographic descriptors are also available. In addition to the anonymised clinical data, the dataset also includes anonymised results of standard questionnaires, phenomenological psychopathology and neurocognitive tasks probing moral sentiments, emotional memory, action tendencies, and social knowledge which were described in our papers, alongside some unpublished data which can be used after seeking permission from the chief investigator. Data from the following publications are entailed in the dataset which should be cited when using the different aspects of the data (links to all are provided in the REFERENCES section): -Gethin J.A., Lythe K.E., Workman C.I., Mayes A., Moll J., Zahn R. Early life stress explains reduced positive memory biases in remitted depression. Eur Psychiatry (2017) 45:59-64: Early life event classification and emotional recognition memory test -Workman C.I., Lythe K.E., McKie S., Moll J., Gethin J.A., Deakin J.F.W., Elliott R., Zahn R. A novel resting-state functional MRI signature of resilience to recurrent depression. Psychological Medicine (2017) 47: 597–607: Resting state fMRI data with prospective clinical follow-up of remitted MDD participants over 14 months -Workman C.I., Lythe K.E., McKie S., Moll J., Gethin J.A., Deakin J.F.W., Elliott R., Zahn R. Subgenual cingulate-amygdala functional disconnection and vulnerability to melancholic depression. Neuropsychopharmacology (2016) doi: 10.1038/npp.2016.8: Resting state fMRI cross-sectional MDD vs Healthy Control comparisons -Lythe K.E., Moll J., Gethin J.A., Workman C.I., Green S., Lambon Ralph M.A., Deakin J.F., Zahn R. Self-blame-selective hyperconnectivity between anterior temporal and subgenual cortices and prediction of recurrent depressive episodes. JAMA Psychiatry (2015): doi:10.1001/jamapsychiatry.2015.1813: Prospective fMRI data for prediction of 14 months clinical follow-up in remitted MDD (Karen Lythe Sample) -Zahn R., Lythe K.E., Green S., Gethin J.A., Deakin J.F., Young A.H., Moll J. The role of self-blame and worthlessness in the psychopathology of major depressive disorder. Journal of Affective Disorders (2015) DOI: http://dx.doi.org/10.1016/j.jad.2015.08.001: Psychopathological assessment (AMDP) and moral emotion addendum -Zahn R., Lythe K.E., Gethin J.A., Green S., Deakin J.F., Workman C., Moll J. Negative emotions towards others are diminished in remitted major depression. European Psychiatry (2015) doi: 10.1016/j.eurpsy.2015.02.005: VMST=MST(value-related moral sentiment task) -Green S., Lambon Ralph M., Moll J., Zakrzewski J., Deakin J.F.W., Grafman J., Zahn R. The neural basis of conceptual-emotional integration and its role in major depressive disorder. Social Neuroscience (2013) 8(5): 417-433: CSKD: conceptual social knowledge differentiation task – unpublished additional data included in dataset -Green S., Moll J., Deakin J.F.W., Hulleman J., Zahn R. Proneness to decreased negative emotions in major depressive disorder when blaming others rather than oneself. Psychopathology (2013) 46(1): 34-44: VMST=MST(value-related moral sentiment task) -Green S., Lambon Ralph M., Moll J., Deakin J.F.W., Zahn R. Guilt-selective functional disconnection of anterior temporal and subgenual cortices in major depressive disorder. Archives of General Psychiatry (2012) 69(10): 1014-1021: cross-sectional fMRI (Sophie Green sample) -Duan S., Lawrence A., Valmaggia L., Moll J., Zahn R. The role of blame-related action tendencies in the vulnerability to major depressive disorder. MedRxiv 2020: https://doi.org/10.1101/2020.11.15.20232058: Action tendencies task (action) -Lythe KE, Gethin JA, Workman CI, Lambon Ralph MA, Deakin JFW, Moll J, et al. Subgenual activation and the finger of blame: individual differences and depression vulnerability. Psychol Med 2020: 1-9: Description of autonomy and sociotropy dimensions of self-blame and its association with fMRI results. <br

    Fol. 45: Auflistung einiger von Robert Zahn erworbenen Objekte

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    Verzeichnis verschiedener Erwerbungen von Robert Zahn – Ort unbekannt, möglicherweise 1899 1 Blatt A4, einseitig beschrieben. Tinte, schwarz. Auf S. 1 eine römische Zahl „V“ in blauem Farbstift vermerkt; oben rechts die Zahl „13“ in rotem Farbstift. Verzeichnis der Ende July 99 über Triest eingetroffenen Erwerbungen des D[okto]r R[obert] Zahn.1) reich gezierter 3-Fuß des Vurva Stiles Innenb[ild]: Sirene. ob[erer] Rand: Tierfries zwischen Streumustern [?]. Füße: gegen Palmettenbaum affront[iv..

    Hieracium umbellatum subvar. trachycorium Zahn 1922

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    &lt;i&gt;Hieracium umbellatum&lt;/i&gt; subvar. &lt;i&gt;trachycorium&lt;/i&gt; Zahn (1922: 910). &lt;p&gt;Ind. loc.: &ldquo;Assiniboia (R. Hoyer)!&rdquo;&lt;/p&gt; &lt;p&gt; Holotype:&mdash; CANADA. Saskatchewan: Assiniboia, Edenwald, 1896, &lt;i&gt;R. Hoyer&lt;/i&gt; (B barcode B 10 1154510]!).&mdash; Current name: &lt;i&gt;Hieracium umbellatum&lt;/i&gt; Linnaeus (1753: 804).&lt;/p&gt; &lt;p&gt; &lt;b&gt;Remarks:&lt;/b&gt; &mdash;Determined by Zahn in 1921.&lt;/p&gt;Published as part of &lt;i&gt;Vogt, Robert &amp; Gottschlich, Günter, 2023, Type material in the Hieracium (Compositae: Cichorieae) collection of Joseph Bornmüller, pp. 81-126 in Phytotaxa 613 (2)&lt;/i&gt; on page 117, DOI: 10.11646/phytotaxa.613.2.1, &lt;a href="http://zenodo.org/record/8345535"&gt;http://zenodo.org/record/8345535&lt;/a&gt

    Hieracium vulgatum subsp. melanoporphyreum Bornm. & Zahn

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    &lt;i&gt;Hieracium vulgatum&lt;/i&gt; subsp. &lt;i&gt;melanoporphyreum&lt;/i&gt; Bornm. &amp; Zahn in Schack (1930: 36). &lt;p&gt;Ind. loc.: &ldquo;Th&uuml;r. Wald: Masserberg, am Turm, 800 m (24.8.1924 B.).&rdquo;&lt;/p&gt; &lt;p&gt; &lt;b&gt;Lectotype (designated here by Gottschlich):&lt;/b&gt; &mdash; GERMANY. Thuringia: Bei Masserberg am Rennsteig, Turm, Porphyr, 800 m, 6&ndash;12 August 1924, &lt;i&gt;J. Bornm&uuml;ller&lt;/i&gt; (B barcode B 10 0453992!).&mdash; Current name: &lt;i&gt;Hieracium lachenalii&lt;/i&gt; subsp. &lt;i&gt;melanoporphyreum&lt;/i&gt; (Bornm. &amp; Zahn) Zahn (1934: 591).&lt;/p&gt; &lt;p&gt; &lt;b&gt;Remarks:&lt;/b&gt; &mdash;Date of collection differs but the specimen bears the handwritten determination by Zahn, dated 1925.&lt;/p&gt;Published as part of &lt;i&gt;Vogt, Robert &amp; Gottschlich, Günter, 2023, Type material in the Hieracium (Compositae: Cichorieae) collection of Joseph Bornmüller, pp. 81-126 in Phytotaxa 613 (2)&lt;/i&gt; on pages 119-120, DOI: 10.11646/phytotaxa.613.2.1, &lt;a href="http://zenodo.org/record/8345535"&gt;http://zenodo.org/record/8345535&lt;/a&gt

    Hieracium lachenalii var. pseudoperscissum Zahn 1934

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    &lt;i&gt;Hieracium lachenalii&lt;/i&gt; var. &lt;i&gt;pseudoperscissum&lt;/i&gt; Zahn (1934: 540). &lt;p&gt;Ind. loc.: &ldquo; Th&uuml;ringen: Wald am Ruppberg bei Zella &rarr; Mehlis (Bornm&uuml;ller)!&rdquo;&lt;/p&gt; &lt;p&gt; &lt;b&gt;Lectotype (designated here by Gottschlich):&lt;/b&gt; &mdash; GERMANY. Thuringia: a: Th&uuml;r. Wald, Zella-Mehlis, Ruppberg, Laubwald, 650 m, 20 July 1928, &lt;i&gt;J. Bornm&uuml;ller&lt;/i&gt;; b: Th&uuml;r. Wald: Zella-Mehlis, Ruppberg, bei der Oberf i rsterei, 20 July 1928, &lt;i&gt;J. Bornm&uuml;ller&lt;/i&gt; (B barcode B 10 0460357!; isolectotype: GERMANY. Thuringia: Th&uuml;r. Wald: Zella-Mehlis, am Ruppberg, ca. 6&ndash;700 m, 20 July 1928, &lt;i&gt;J. Bornm&uuml;ller&lt;/i&gt; (B barcode B 10 0460358!).&mdash;Current name: &lt;i&gt;Hieracium lachenalii&lt;/i&gt; subsp. &lt;i&gt;lachenalii&lt;/i&gt;.&lt;/p&gt; &lt;p&gt; &lt;b&gt;Remarks:&lt;/b&gt; &mdash;The lectotype bears two labels (a+b). On label &ldquo;a&rdquo; Zahn noted the determination. Label &ldquo;b&rdquo; seems to be a handwritten copy by Bornm&uuml;ller. Author and type of &lt;i&gt;Hieracium lachenalii&lt;/i&gt; have changed, therefore the current name is &lt;i&gt;H. lachenalii&lt;/i&gt; Suter (1802: 145) (subsp. &lt;i&gt;lachenalii&lt;/i&gt;). The characters of the variety fall into the phenotypic variation of the type.&lt;/p&gt;Published as part of &lt;i&gt;Vogt, Robert &amp; Gottschlich, Günter, 2023, Type material in the Hieracium (Compositae: Cichorieae) collection of Joseph Bornmüller, pp. 81-126 in Phytotaxa 613 (2)&lt;/i&gt; on page 96, DOI: 10.11646/phytotaxa.613.2.1, &lt;a href="http://zenodo.org/record/8345535"&gt;http://zenodo.org/record/8345535&lt;/a&gt

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We 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
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