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Institut für Physiologie und Pathophysiologie

Arbeitsgebiete

Fast Network Oscillations


Rhythmic activity is a key functional feature of the brain, as evident from the well-known EEG-rhythms. Meanwhile, many neuroscientists agree that such network oscillations are «meaningful» and provide an important background for temporal coding of information. In our group we focus on one type of network oscillations in the rodent hippocampus, namely «ripples» at ~200 Hz as originally described by John O´Keefe, G. Buszáki and others. We want to elucidate the precise mechanisms by which neurons are entrained to fire at high precision within these short (5 ms) cycles. Moreover, we would like to find out why certain neurons participate in this network while others do not.

Function of GABAergic Synapses

The complex organisation of central synapses offers multiple mechanisms for regulation and modulation of synaptic strength. We focus on inhibitory synapses in the mammalian CNS which use GABA (gamma-aminobutyric acid) as transmitter. The availability of GABA is regulated by its synthesis, degradation and after release-uptake. In situations of over-excitability, the GABA-synthetizing enzyme GAD is up-regulated while a decrease of neuronal activity leads to a down-regulation of GAD. Thus, cellular GABA content seems to be an activity-dependent, variable parameter. We propose that the presynaptic GABA metabolism is a true and autonomous mechanism of synaptic plasticity. We are presently testing this hypothesis using various electrophysiological, histological and biochemical techniques.

Synaptic Physiology and Pharmacology of Epilepsy


Neue Publikationen

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Induced Pluripotent Stem Cell-derived cardiomyocytes (iPSC-CMs); generation and enrichment protocols, immature and mature structure and function. In: Recent Advances in iPSC-Derived Cell Types, Volume 4, 1st Edition (Birbrair A, ed.) Academic Press 2021, pp. 191-226. Paperback ISBN 9780128222300; eBook ISBN 9780128224540

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Simulation of Air Travel-Related Irradiation Exposure of Cryopreserved Mouse Germplasm Samples. Biopreserv Biobank. 2021 Mar 1. doi: 10.1089/bio.2020.0046. Online ahead of print.

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Anesthetics and plants: no pain, no brain, and therefore no consciousness. Protoplasma. 2021 Mar;258(2):239-248. doi: 10.1007/s00709-020-01550-9. Epub 2020 Sep 2.

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Epigenetic regulation of cardiac electrophysiology in atrial fibrillation: HDAC2 determines action potential duration and suppresses NRSF in cardiomyocytes. Basic Res Cardiol. 2021 Feb 25;116(1):13. doi: 10.1007/s00395-021-00855-x. PMID: 33630168

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Endothelial cells control vascular smooth muscle cell cholesterol levels by regulating 24-dehydrocholesterol reductase expression. Exp Cell Res. 2021 Feb 15;399(2):112446. doi: 10.1016/j.yexcr.2020.112446. Epub 2021 Jan 7.

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A New Apparatus for Recording Evoked Responses to Painful and Non-painful Sensory Stimulation in Freely Moving Mice. Front Neurosci. 2021 Feb 12;15:613801. doi: 10.3389/fnins.2021.613801. eCollection 2021.

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Integrated information theory does not make plant consciousness more convincing. Biochem Biophys Res Commun. 2021 Jan 21:S0006-291X(21)00057-7. doi: 10.1016/j.bbrc.2021.01.022. Online ahead of print.

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AAV-mediated AP-1 decoy oligonucleotide expression inhibits aortic elastolysis in a mouse model of marfan syndrome. Cardiovasc Res. 2021 Jan 20:cvab012. doi: 10.1093/cvr/cvab012. Online ahead of print.

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Voltage-independent GluN2A-type NMDA receptor Ca2+ signaling promotes audiogenic seizures, attentional and cognitive deficits in mice. Commun Biol. 2021 Jan 8;4(1):59. doi: 10.1038/s42003-020-01538-4.

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A thalamic bridge from sensory perception to cognition. Neurosci Biobehav Rev. 2021 Jan;120:222-235. doi: 10.1016/j.neubiorev.2020.11.013. Epub 2020 Nov 24.

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Assessable learning outcomes for the EU Education and Training Framework core and Function A specific modules: Report of an ETPLAS WORKING Group. Lab Anim. 2020 Dec 7:23677220968589. doi: 10.1177/0023677220968589. Online ahead of print.

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Debunking a myth: plant consciousness. Protoplasma. 2020 Nov 16. doi: 10.1007/s00709-020-01579-w. Review. Online ahead of print.

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Microglia and lipids: how metabolism controls brain innate immunity. Semin Cell Dev Biol. 2020 Aug 14;S1084-9521(19)30197-1. doi: 10.1016/j.semcdb.2020.08.001. Online ahead of print.


Institut für
Physiologie und Pathophysiologie

Universität Heidelberg

Im Neuenheimer Feld 326

69120 Heidelberg

Telefon:+49 6221 54-4056
Telefax:+49 6221 54-6364
E-Mail:susanne.bechtel@
physiologie.uni-heidelberg.de