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News Beck 10.2019
An interneuron (bright, with long appendages) from the hippocampus of the rat. The finely branched axon (top left cloud) surrounds the cell bodies of pyramidal cells and can inhibit these effectively.
© Leonie Pothmann/Uni Bonn

Publication

Epilepsy: Function of "brake cells" disrupted

In some forms of epilepsy, the function of certain "brake cells" in the brain is presumed to be disrupted. This may be one of the reasons why the electrical malfunction is able to spread from the point of origin across large parts of the brain. A current study by the University of Bonn with members of the cluster of excellence ImmunoSensation2, in which researchers from Lisbon were also involved, points in this direction. The results are published in the renowned "Journal of Neuroscience".

Publication

Leonie Pothmann, Christian Klos, Oliver Braganza, Sarah Schmidt, Oihane Horno, Raoul-Martin Memmesheimer and Heinz Beck: Altered dynamics of canonical feed-back inhibition predicts increased burst transmission in chronic epilepsy; The Journal Of Neuroscience; https://doi.org/10.1523/JNEUROSCI.2594-18.2019

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Focus on the Guardians of the Antibody Response

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Publication

When the map needs an update

—Every time we move through a familiar environment, the hippocampus consults an internal map, a detailed spatial representation that is built up through repeated experience. But what happens when something unexpected occurs on a well-known route? Researchers at the UKB and the University of Bonn were able to demonstrate in a mouse model that the brain does not redraw its maps from scratch. Instead, it annotates them: preserving the underlying spatial layout while overlaying new information on top of the existing map. Their findings have now been published in the journal PNAS.
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Publication

Immune cells in the liver help pigeons navigate

—How do pigeons find their way home safely over distances of many kilometers? A research team from the University Hospital Bonn (UKB), the University of Bonn, the University of Duisburg-Essen, and the Max Planck Institute for Behavioral Biology has now discovered a previously unknown mechanism: specific immune cells in the liver may help the birds detect the Earth’s magnetic field. The findings have now been published in the journal Science.
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