Von Fachlicher Risikoanalyse zu Politischer Risikobewertung: Die Vermittlung von Risikoanalysen im Bevölkerungsschutz in die Bundespolitik

In Deutschland werden seit 2010 im Auftrag des Bundesministeriums des Innern und für Heimat (bis 8. Dezember 2021 Bundesministerium des Innern, für Bau und Heimat), unter der Koordination des Bundesamtes für Bevölkerungsschutz und Katastrophenhilfe (BBK) regelmäßig Risikoanalysen zu unterschiedlichen Risiken erarbeitet und zur politischen Bewertung vor allem an den Innenausschuss des Deutschen Bundestages gesandt. Diese Studie untersucht explorativ die Rahmenbedingungen der politischen Arbeit von Abgeordneten des Deutschen Bundestages und geht der Frage nach, welche Gründe und Bedingungen die Wahrnehmung der Risikoanalysen beeinflussen und die Verwendung dieser für die Entscheidungsfindung und Politikgestaltung erschweren oder erleichtern. Zur Beantwortung dieser Frage wurden 15 leitfadengestützte Interviews mit aktiven und ehemaligen Bundestagsabgeordneten sowie zwei Gruppendiskussionen mit wissenschaftlichen Mitarbeitenden von Bundestagsabgeordneten durchgeführt. Auf der Grundlage eines heuristischen Modells erfolgte eine strukturierte qualitative Inhaltsanalyse des Materials entlang festgelegter Auswertungskategorien. Durch die Analyse konnten grundlegende Rahmenbedingungen für die Arbeits- und Verhaltensweisen der Abgeordneten herausgearbeitet und Gründe aufgezeigt werden, die eine politische Diskussion der Risikoanalysen in der Vergangenheit erschwert haben. Gleichzeitig erzielte die Analyse eine große Anzahl von Anhaltspunkten für direkte oder indirekte Verbesserungen in der kommunikativen Begleitung der Risikoanalysen sowie deren inhaltlicher und visueller Aufbereitung. Zusätzliche Aspekte hinsichtlich der politischen Wahrnehmung und Bewertung der Risikoanalysen konnten im Rahmen einer Analyse politischer Dokumente erarbeitet werden, die über das Dokumentations- und Informationssystem für Parlamentarische Vorgänge (DIP) abrufbar sind. Die Studie stellt abschließend Handlungsempfehlungen für einen erfolgreichen Transfer der Inhalte der Risikoanalysen in die Bundespolitik vor

The role of the left and right inferior frontal gyrus in processing metaphoric and unrelated co-speech gestures

Gestures are an integral part of in-person conversations and complement the meaning of the speech they accompany. The neural processing of co-speech gestures is supported by a mostly left-lateralized network of fronto-temporal regions. However, in contrast to iconic gestures, metaphoric as well as unrelated gestures have been found to more strongly engage the left and right inferior frontal gyrus (IFG), respectively. With this study, we conducted the first systematic comparison of all three types of gestures and resulting potential laterality effects.During collection of functional imaging data, 74 subjects were presented with 5 s videos of abstract speech with related metaphoric gestures, concrete speech with related iconic gestures and concrete speech with unrelated gestures. They were asked to judge whether the content of the speech and gesture matched or not.Differential contrasts revealed that both abstract related and concrete unrelated compared to concrete related stimuli elicited stronger activation of the bilateral IFG. Analyses of lateralization indices for IFG activation further showed a left hemispheric dominance for metaphoric gestures and a right hemispheric dominance for unrelated gestures.Our results give support to the hypothesis that the bilateral IFG is activated specifically when processing load for speech-gesture combinations is high. In addition, laterality effects indicate a stronger involvement of the right IFG in mismatch detection and conflict processing, whereas the left IFG performs the actual integration of information from speech and gesture

The facilitative effect of gestures on the neural processing of semantic complexity in a continuous narrative

© 2019 Elsevier Inc. Gestures are elemental components of social communication and aid comprehension of verbal messages; however, little is known about the potential role of gestures in facilitating processing of semantic complexity in an ecologically valid setting. The goal of this study was to investigate whether cognitive load, as indexed by semantic complexity, is modulated by the presentation of gestures accompanying speech. Twenty healthy participants watched 16 video clips of a short narrative while instructed to carefully listen to and watch the narrator while functional magnetic resonance imaging (fMRI) data were acquired. The videos contained passages with and without various co-speech gestures, as well as passages where the semantic complexity was either low or high, as measured by the metric of idea density. Increasing semantic complexity led to reduced activation within the default mode network (DMN); whereas, presents of gestures decreased activation in language-related regions (left middle temporal gyrus and left inferior frontal gyrus) and increased activation in high-level visual and multimodal regions of occipitotemporal cortex. Most interestingly, an interaction between semantic complexity and gestures was observed in a language-related area in left anterior temporal cortex; specifically, increasing gestures led to a greater drop in activation with high vs. Low semantic complexity. These results provide evidence that the facilitation of gestures on semantic processing, particularly for complex narratives, is reflected in the neural substrates of language processing

The EEG and fMRI signatures of neural integration: An investigation of meaningful gestures and corresponding speech

One of the key features of human interpersonal communication is our ability to integrate information communicated by speech and accompanying gestures. However, it is still not fully understood how this essential combinatory process is represented in the human brain. Functional magnetic resonance imaging (fMRI) studies have unanimously attested the relevance of activation in the posterior superior temporal sulcus/middle temporal gyrus (pSTS/MTG), while electroencephalography (EEG) studies have shown oscillatory activity in specific frequency bands to be associated with multisensory integration. In the current study, we used fMRI and EEG to separately investigate the anatomical and oscillatory neural signature of integrating intrinsically meaningful gestures (IMG; e.g. “Thumbs-up gesture”) and corresponding speech (e.g., “The actor did a good job”). In both the fMRI (n=20) and EEG (n=20) study, participants were presented with videos of an actor either: performing IMG in the context of a German sentence (GG), IMG in the context of a Russian (as a foreign language) sentence (GR), or speaking an isolated German sentence without gesture (SG). The results of the fMRI experiment confirmed that gesture–speech processing of IMG activates the posterior MTG (GG>GR∩GG>SG). In the EEG experiment we found that the identical integration process (GG>GR∩GG>SG) is related to a centrally-distributed alpha (7–13 Hz) power decrease within 700–1400 ms post-onset of the critical word. These new findings suggest that BOLD response increase in the pMTG and alpha power decrease represent the neural correlates of integrating intrinsically meaningful gestures with their corresponding speech

Raw data of 'He, Y., Gebhardt, H., Steines, M., Sammer, G., Kircher, T., Nagels, A., & Straube, B. (2015). The EEG and fMRI signatures of neural integration: An investigation of meaningful gestures and corresponding speech. Neuropsychologia, 72, 27-42.'

<p>This is the raw data for</p> <p>He, Y., Gebhardt, H., Steines, M., Sammer, G., Kircher, T., Nagels, A., & Straube, B. (2015). The EEG and fMRI signatures of neural integration: An investigation of meaningful gestures and corresponding speech. Neuropsychologia, 72, 27-42.</p> <p>Both second level fMRI data and EEG data for single subjects are provided.</p> <p></p