Zentrum für Kognitionswissenschaften Newsletter 01/2008

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1 Zentrum für Kognitionswissenschaften Newsletter 01/2008

2 Vorwort Dear Reader, As indicated in the last Newsletter of 2007, we decided to include three rather than four posters in all future Newsletters, but to extend the preface and write it in English, to allow a quick overview that may help to pick those posters each individual reader is specifically interested in. The first one, by C. Schütze, K. Spang and myself, entitled Schrumpft der Ausfall? (Does the deficit shrink?), addresses the Subjektiv wahrgenommene Größe von Gesichtsfeldausfällen, i. e. the subjectively experienced size of visual field defects. The results show that, depending on the type of stimuli used in a visual confrontation test, patients are more or less able to subjectively experience their visual field defects (of which they are usually unaware in everyday situations). These deficits experienced subjectively can be either smaller or larger than the defects found quasi-objectively in conventional perimetry. In the second poster, dealing with an fmri-analysis based on an aggression movie stimulus inventory by T. Fehr, D. Stüber, M. Lück, M. Herrmann, and G. Roth, a novel method is introduced to examine emotional processing of aggression and anger in healthy observers by means of functional magnetic resonance imaging, i.e. by evaluating changes in cerebral blood flow. This study brings together researchers from Bremen University with others from the Hanse Institute for Advanced Study (HWK) in Delmenhorst and from the Department of Neurology of the Otto-von-Guericke-University Magdeburg. The method displays a large number (around 100) of short video-clips of 5 6 sec. length that include positive, neutral, and aggressive social contacts. First results indicate higher cortical activations in the posterior (back), temporal (lateral), and partly also frontal (front) parts of the brain during aggressive situations. The third contribution, by G. Schlosser, D. Völker, A. Stammler, M. W. Klymkowsky, and S. A. Moody is entitled Regulation of Neurogenesis by Eya1 and Six1 in Xenopus and examines the role of two transcription factors on early stages of the development of the neural system in a model organism, Xenopus. The authors were able to precisely characterize the role of these two transcription factors that play, despite low levels of expression, an important role during two discrete steps of neurogenesis. All the best Manfred Fahle Inhaltsverzeichnis 3 Schrumpft der Ausfall? Über die subjektiv wahrgenommene Größe von Gesichtsfeldausfällen Institut für Hirnforschung I (Abteilung Verhaltensphysiologie Entwicklungsneurobiologie) 4 Neural correlates of perceiving aggressive behavior Institut für Hirnforschung V (Neuropsychologie und Verhaltensneurobiologie) 5 Regulation of neurogenesis by Eya1 and Six1 in Xenopus Institut für Hirnforschung I (Abteilung Verhaltensphysiologie Entwicklungsneurobiologie) und und 2/6

3 Schrumpft der Ausfall? Über die subjektiv wahrgenommene Größe von Gesichtsfeldausfällen Arbeitsgruppe: Institut für Hirnforschung I (Abteilung Verhaltensphysiologie und Entwicklungsneurobiologie) Autoren: Cathleen Schütze, Karoline Spang, Manfred Fahle 3/6

4 Neural correlates of perceiving aggressive behavior Arbeitsgruppe: Institut für Hirnforschung V (Neuropsychologie und Verhaltensneurobiologie) Autoren: Thorsten Fehr, Daniel Strüber, Monika Lück, Manfred Herrmann & Gerhard Roth 4/6

5 Regulation of neurogenesis by Eya1 and Six1 in Xenopus Arbeitsgruppe: Institut für Hirnforschung I (Abteilung Verhaltensphysiologie und Entwicklungsneurobiologie) Autoren: Gerhard Schlosser, Doris Voelker, Angelika Stammler, Mike W. Klymkowsky, Salla A. Moody 5/6

6 Impressum Verantwortlich im Sinne des Presserechts: Geschäftsführender Direktor: Prof. Dr. M. Fahle Universität Bremen, COGNIUM Hochschulring 18 D Bremen Tel.: Fax: Geschäftsführer: Dr. Martin Jordan ZKW-Geschäftsstelle Universität Bremen, COGNIUM Hochschulring 18 D Bremen Tel.: Fax: Aktuelle Informationen finden Sie auch auf unserer Internetseite: Newsletter-Tool: Kevin M. Gledhill 6/6