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Although in real life people frequently perform visual search together, in lab experiments this social dimension is typically left out. Here, we investigate individual, collaborative and competitive visual search with visualization of search partners’ gaze. Participants were instructed to search a grid of Gabor patches while being eye tracked. For collaboration and competition, searchers were shown in real time at which element the paired searcher was looking. To promote collaboration or competition, points were rewarded or deducted for correct or incorrect answers. Early in collaboration trials, searchers rarely fixated the same elements. Reaction times of couples were roughly halved compared with individual search, although error rates did not increase. This indicates searchers formed an efficient collaboration strategy. Overlap, the proportion of dwells that landed on hexagons that the other searcher had already looked at, was lower than expected from simulated overlap of two searchers who are blind to the behavior of their partner. The proportion of overlapping dwells correlated positively with ratings of the quality of collaboration. During competition, overlap increased earlier in time, indicating that competitors divided space less efficiently. Analysis of the entropy of the dwell locations and scan paths revealed that in the competition condition, a less fixed looking pattern was exhibited than in the collaborate and individual search conditions. We conclude that participants can efficiently search together when provided only with information about their partner’s gaze position by dividing up the search space. Competing search exhibited more random gaze patterns, potentially reflecting increased interaction between searchers in this condition.
Harriet Rudolph - notice
(2013)
Harriet Rudolph (né en 1966) étudie l’histoire et l’histoire de l’art à Tübingen et Londres. Après son doctorat obtenu en 1999, elle devient maître de conférences en histoire moderne à l’Université de Trèves. Après l’obtention de son habilitation en 2008, elle enseigne aux Universités de Francfort-sur-le-Main, Sarrebruck et Innsbruck. Depuis 2012, Harriet Rudolph occupe la chaire d’histoire moderne de Ratisbonne. Ses thèmes de recherche sont : les cultures politiques en Europe, l’histoire des médias et l’iconographie historique, les cultures festives urbaines et de cour, l’histoire de la diplomatie, l’histoire juridique, en particulier relative au droit pénal et à la pratique judiciaire. ...
Introduction: Previous studies have established graph theoretical analysis of functional network connectivity (FNC) as a potential tool to detect neurobiological underpinnings of psychiatric disorders. Despite the promising outcomes in studies that examined FNC aberrancies in bipolar disorder (BD) and major depressive disorder (MDD), there is still a lack of research comparing both mood disorders, especially in a nondepressed state. In this study, we used graph theoretical network analysis to compare brain network properties of euthymic BD, euthymic MDD and healthy controls (HC) to evaluate whether these groups showed distinct features in FNC.
Methods: We collected resting‐state functional magnetic resonance imaging (fMRI) data from 20 BD patients, 15 patients with recurrent MDD as well as 30 age‐ and gender‐matched HC. Graph theoretical analyses were then applied to investigate functional brain networks on a global and regional network level.
Results: Global network analysis revealed a significantly higher mean global clustering coefficient in BD compared to HC. We further detected frontal, temporal and subcortical nodes in emotion regulation areas such as the limbic system and associated regions exhibiting significant differences in network integration and segregation in BD compared to MDD patients and HC. Participants with MDD and HC only differed in frontal and insular network centrality.
Conclusion: In conclusion, our findings indicate that a significantly altered brain network topology in the limbic system might be a trait marker specific to BD. Brain network analysis in these regions may therefore be used to differentiate euthymic BD not only from HC but also from patients with MDD.
Dans l’image traditionnelle des « religions orientales », forgée dans ses caractéristiques essentielles par Franz Cumont, les villes portuaires jouent un rôle important en tant que centres de distribution. Cumont considérait comme tout naturel que les dieux du Levant aient suivi les grands flux commerciaux et humains de l’Orient vers l’Occident. Les marchands orientaux, qui constituaient le principal groupe mobile, avaient selon lui fait office de « missionnaires » dans les villes portuaires occidentales. ...
Objective. Evaluation of C-MAC PM® in combination with a standard Macintosh blade size 3 in direct and indirect laryngoscopy and D-Blade® in indirect laryngoscopy in a simulated difficult airway. Primary outcome was defined as the best view of the glottic structures. Secondary endpoints were subjective evaluation and assessment of the intubation process.
Methods. Prospective monocentric, observational study on 48 adult patients without predictors for difficult laryngoscopy/tracheal intubation undergoing orthopedic surgery. Every participant preoperatively received a cervical collar to simulate a difficult airway. Direct and indirect laryngoscopy w/o the BURP maneuver with a standard Macintosh blade and indirect laryngoscopy w/o the BURP maneuver using D-Blade® were performed to evaluate if blade geometry and the BURP maneuver improve the glottic view as measured by the Cormack-Lehane score.
Results. Using a C-MAC PM® laryngoscope, D-Blade® yielded improved glottic views compared with the Macintosh blade used with either the direct or indirect technique. Changing from direct laryngoscopy using a Macintosh blade to indirect videolaryngoscopy using C-MAC PM® with D-Blade® improved the Cormack-Lehane score from IIb, III, or IV to I or II in 31 cases.
Conclusion. The combination of C-MAC PM® and D-Blade® significantly enhances the view of the glottis compared to direct laryngoscopy with a Macintosh blade in patients with a simulated difficult airway.
Trial Registration Number. This trial is registered under number NCT03403946.
Les tâches d’une sociologie de la culture ne peuvent être définies sans prendre en considération la situation générale de la discipline. La conception dominante veut que la société puisse être définie par son organisation extérieure, par les divisions qui sont partout manifestes dans la vie sociale et qui sont aujourd’hui désignées sommairement comme sa structure. Ce concept de société, nous aurons à le montrer, est davantage le produit de différentes circonstances contingentes qu’il ne se fonde sur une décision de principe ou sur des preuves empiriques. Quoi qu’il en soit, il en résulte, en pratique, que la société est identifiée avec sa structure et que la sociologie, par suite, est réduite à une analyse de cette dernière. Cette conception de la société ne laisse pas de place à la culture comme donnée autonome ; la sociologie de la culture, de ce fait, en est réduite à la portion congrue. ...
The present study aims to clarify the confused taxonomy of Z. schaufussi von Frauenfeld, 1862 and Zospeum suarezi Gittenberger, 1980. Revision of Iberian Zospeum micro snails is severely hindered by uncertainties regarding the identity of the oldest Iberian Zospeum species, Z. schaufussi von Frauenfeld, 1862. In this paper, we clarify its taxonomic status by designating a lectotype from the original syntype series and by describing its internal and external shell morphology. Using SEM-EDX, we attempt to identify the area of the type locality cave more precisely than "a cave in Spain". The shell described and illustrated by Gittenberger (1980) as Z. schaufussi appears not to be conspecific with the lectotype shell, and is considered a separate species, Z. gittenbergeri Jochum, Prieto & De Winter, sp. n.
Zospeum suarezi was described from various caves in NW Spain. Study of the type material reveals that these shells are not homogenous in shell morphology. The holotype shell of Z. suarezi is imaged here for the first time. The paratype shell, illustrated by Gittenberger (1980) from a distant, second cave, is described as Zospeum praetermissum Jochum, Prieto & De Winter, sp. n. The shell selected here as lectotype of Z. schaufussi, was also considered a paratype of Z. suarezi by Gittenberger (1980). Since this specimen is morphologically very similar to topotypic shells of Z. suarezi, the latter species is considered a junior synonym of Z. schaufussi (syn. n.). The internal shell morphology of all these taxa is described and illustrated using X-ray Micro Computer Tomography (Micro-CT).
Le fait de savoir si le Saint-Empire romain germanique constituait un État est, en soi, une question peu stimulante, la réponse dépendant qui plus est des représentations fondamentales que l’on se fait de l’État. La recherche allemande, obsédée par le modèle de l’État national souverain, s’est accordée à penser pendant près d’un siècle et demi et en dépit de toutes les ruptures institutionnelles que l’Empire ne formait pas un État. En référence à cette tradition, l’introduction du concept d’« Empire-État complémentaire » (« komplementärer Reichs-Staat ») a mis en émoi une partie de la communauté des historiens modernistes germanophones, tandis qu’une autre part accueillait avec sérénité ou bienveillance ce nouveau modèle interprétatif. On pourrait ce faisant et en s’appuyant sur l’historicité de la formation de « l’État » procéder à l’analyse de l’Empire à partir de divers modèles. Mais une telle approche n’est pas sans conséquences sur l’appréciation de l’histoire allemande dans son ensemble. Définir l’Empire comme État et nation bouscule sensiblement le « grand récit » traditionnel : l’écart par rapport à une voie réputée normale de l’histoire européenne a jusqu’à présent conféré au passé allemand une signification pourvue d’une finalité tantôt légitimante tantôt déstructurante, mais toujours facteur d’intégration politique. Le concept d’Empire-État complémentaire ébranle l’idée de la singularité de l’histoire allemande moderne* sur un point capital, car il facilite la comparaison avec d’autres pays et oblige à considérer l’Allemagne comme partie prenante de l’Europe des États modernes. La notion d’Empire-État complémentaire ne peut dès lors servir ni de point de départ d’une « voie allemande particulière », ni d’archétype ou de modèle supra-étatique et supranational, ou d’équivalent fonctionnel de l’Europe contemporaine. ...
Background: The incidence of central nervous system (CNS) metastases in breast cancer patients is rising and has become a major clinical challenge. Only few data are published concerning risk factors for the development of CNS metastases as a first site of metastatic disease in breast cancer patients. Moreover, the incidence of CNS metastases after modern neoadjuvant treatment is not clear.
Methods: We analyzed clinical factors associated with the occurrence of CNS metastases as the first site of metastatic disease in breast cancer patients after neoadjuvant treatment in the trials GeparQuinto and GeparSixto (n = 3160) where patients received targeted treatment in addition to taxane and anthracycline-based chemotherapy.
Results: After a median follow-up of 61 months, 108 (3%) of a total of 3160 patients developed CNS metastases as the first site of recurrence and 411 (13%) patients had metastatic disease outside the CNS. Thirty-six patients (1%) developed both CNS metastases and other distant metastases as the first site of metastatic disease. Regarding subtypes of the primary tumor, 1% of luminal A-like (11/954), 2% of luminal B-like (7/381), 4% of HER2-positive (34/809), and 6% of triple-negative patients (56/1008) developed CNS metastases as the first site of metastatic disease.
In multivariate analysis, risk factors for the development of CNS metastases were larger tumor size (cT3–4; HR 1.63, 95% CI 1.08–2.46, p = 0.021), node-positive disease (HR 2.57, 95% CI 1.64–4.04, p < 0.001), no pCR after neoadjuvant chemotherapy (HR 2.29, 95% CI 1.32–3.97, p = 0.003), and HER2-positive (HR 3.80, 95% CI 1.89–7.64, p < 0.001) or triple-negative subtype (HR 6.38, 95% CI 3.28–12.44, p < 0.001).
Conclusions: Especially patients with HER2-positive and triple-negative tumors are at risk of developing CNS metastases despite effective systemic treatment. A better understanding of the underlying mechanisms is required in order to develop potential preventive strategies.
Background: Esophageal cancer (EC) is one of the deadliest cancers worldwide. The contemporary strong increase of the adenocarcinomas in Western countries and the high mortality rates require the intensification of prospective multinational studies.
Methods: Therefore, this global health issue has been chosen for the bibliometric review of the global publication output. As source for meta and citation data, the Web of Science has been used and Density Equalizing Maps were applied for visualization.
Results: 17,387 articles on EC could be identified. The years with publication and citation maxima correspond to the appearance of the most prolific articles. China is the most publishing country, followed by Japan and the USA. Germany and the UK ranked 4th and 5th. The analysis of the ratios articles and socio-economic parameters emphasizes the leading position of the Scandinavian countries and Japan. Here, the high-income countries come out on top. The high incidence regions are mainly represented by Chinese and Japanese research. The association of the publication output and the overall research funding could be shown.
Conclusions: A strengthened international network increasingly consisting of the scientifically best positioned countries as well as more of the high incidence countries worldwide is mandatory for future research. The findings deliver scientists, clinicians and decision makers backgrounds for future decisions all over the world.