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Research group Normann / Vestring

Mechanisms of Depression
Research group leader:Prof. Dr. Claus Normann
Email: claus.normann@uniklinik-freiburg.de

Dr. Stefan Vestring
Email: stefan.vestring@uniklinik-freiburg.de
Group members:
Basic-scientists:

PostDoc: Dr. Maxim Veleanu
PostDoc: Dr. Marina Conde Pérez
PhD-student: Msc. Viktoria Galuba
PhD-student: Louise Schubert
Physicians:Dr. Felix Mülsch
Feres Mocayar Marón
Dr. Elena Burkhardt
Psychologist:Dr. Nicola Thiel
Doctoral students:Sabine Voita
Alejandro Aguilera
Anouk Ihle
Franziska von der Decken
Kathleen Karkossa
Julia Elicker
Anna Li
Doniali Tarhini
Paul Rossner
Elisa Grießbach
Dorothea Jocher
Janina Frenk
Anne Alex
Viktoria Chauvard
Samira Assaad Dib
Sarah Hag
Victoria Heer
Judith Bernhardt
Magdalena Neureither
Fabian Hummel
Martin Bronnec
Clotilde Vivet
Stella Zimermann
Lea Smoltzyk
Odile Sorg
Annika Oligschläger
Juliana Zelder
Anne Zeien
Anna Catarata
Rebecca Heck
Maguerite Anselin
Anna Schnecking
Magalie Müller
Lara Schwarzenberg
Rouven Schmalz
Nadine Kirbach
Anna Sita Berger
Lisa Charlotte Bauer
Thibault Meisenbach
Theresa Wolf
Leo Harbig
Maide Özdemir
Lukas Veith
Samuel Pfauth
Caroline Rauscher
Lara Croizat
Jan Warneke
Liam Zöllner
Mathilda Gorr
Jule Wendl
Tabea Bernhardt
Steven Peter
Leon von Ziegesar
Marcia Frank
Tim Schwär
Marina Tocci
Laura Schäfer
Jean-Paul Grohe
Paul Belzer
Jakob Weber
Lukas Rutke
Julia Lais
Helena Regner
 
Other Members:Manfred Weber (Study nurse)
Collaborations:ERA-NET Neuron
Prof. Josef Bischofberger, Basel
Prof. Eero Castrén, Helsinki
Dr. Tsvetan Serchov, Strassbourg
Prof. Shira Knafo, Negev
Prof. Dr. Andreas Vlachos, Freiburg
Prof. Markus Heinrichs
Prof. Christoph Nissen, Genf
Prof. Dominik Elverfeldt, Freiburg
Prof. Dr. Bernd Fakler, Freiburg
Prof. Igor Branchi, Rome
euroModulBasics, Freiburg
German Center for Brain Stimulation
CBASP Network
DG-IPT
DGBS
Prof. Dr. Urtė Neniškytė
dARE Studie
Prof. Dr. Christian Plewnia
Prof. Dr. Maria Stein
DGPPN Referat
Dr. Rachael Sumner

Research focus

We have successfully combined expertise in clinical psychiatry and psychotherapy, neuropsychopharmacology and basic science to develop a translational approach in order to understand the pathophysiology of affective disorders and to develop novel treatment strategies for major depression. Our research group was among the first to develop and to support the neuroplasticity hypothesis of depression. Starting from a basic science approach with a focus on long-term synaptic depression (LTD), we soon discovered a facilitation of LTD and an inhibition of long-term synaptic potentiation (LTP) in different animal models of depression and early stress, which were effectively restored by different classes of antidepressants. We have characterized novel targets for antidepressant action, including Ca2+ channels, TrkB receptor, mGluR, NMDA receptor subunits. In a translational approach, we have developed and examined methods to assess correlates of synaptic plasticity in healthy humans and depressed patients; including the characterization of therapeutic mechanisms. A neuroplasticity approach to explain and to treat depression highlights the importance of interactions between disorder, treatment and environment. Moreover, it suggests effective ways to augment psychotherapeutic approaches by medication and brain stimulation; hereby providing a science based reconciliation between the schools of biologically and psychotherapeutically oriented psychiatrists. We combine clinical psychiatry and psychotherapy with advanced basic science; thus allowing real bench-to-bedside translation. Our final aim is to contribute to an integrative, science-based and effective treatment of major depression.

Research projects

1. Basic mechanisms of synaptic plasticity
Mechanism of associative LTD, role of astrocytes in LTP, calcium influx pathways, modulation of different forms of synaptic plasticity in the hippocampus.

2. Synaptic plasticity in animal models of depression
Behavioral assessment and synaptic plasticity in animal models of depression and early stress.

3. Correlates of synaptic plasticity in humans
Translational assessment of brain plasticity in healthy controls and depressed patients using EEG-based visually evoked potentials (VEPs), transcranial magnetic stimulation, imaging, and behavioral paradigms.

4. Biomarker Research
Investigation of whether depression is associated with measurable impairments in neuroplasticity, whether these changes can be reversed by antidepressant interventions (including esketamine), and whether EEG-based readouts of plasticity can serve as biomarkers for treatment response and early response prediction.

5. Modulation of synaptic plasticity by antidepressants
Multidimensional approach assessing the modulation of synaptic plasticity by antidepressants and rapid-acting antidepressants, behavioural methods and electrophysiological recordings. Identification of novel targets for antidepressant action (TrkB receptor, mGluR, NMDAR subunits)

6. rTMS / Clinical Brain Stimulation Research
Focus on rTMS and clinical brain stimulation research in naturalistic settings. Establishment of a multicenter database for the treatment of therapy-resistant depression. Biomarker research aimed at identifying predictors of treatment response to brain stimulation and supporting personalized treatment approaches.
Collaboration with Neuroradiology (PD Dr. Alexander Rau) with a focus on naturalistic, retrospective morphometric analyses of neuroradiological imaging prior to ECT, ketamine, and rTMS treatments to identify structural predictors of treatment response.

7. Treatment of chronic and therapy-resistant depression
CBASP for chronic depression, implementation of in-patient treatment programs for chronic depression and TRD, pharmacotherapy for TRD and bipolar disorder. Brain stimulation: clinical and preclinical ECT, tDCS and rTMS research

8. Clinical research
Phase II to IV and IIT clinical trials in MDD, bipolar disorder, psychosis, psychotherapy. Continuous GCP/ICH certification.

Research methods

Laboratory research
Electrophysiology and calcium imaging
Patch-clamp technique, focus on synaptic plasticity
Fluorescence imaging
Fiberphotometry
Morphology
    Single cell dye fillings, microelectrophoresis
    Immunofluorescent and native stainings
Molecular biology
Standard molecular biology techniques (PCR, WB, cell culture)

Animal behavioural experiments
Behavioral animal models of depression
IntelliCage
Readout methods
    Escape behaviour
    Learning tasks (object location memory, novel object test, Maze tests)
    Reward/anhedonia (sucrose preference test, nose pokes sucrose preference)
Locomotion/anxiety (Open Field Test)

Clinical research
Assessment of plasticity in humans
Visually evoked potentials (VEPs)
Paired associative Stimulation (PAS)
Different learning tasks (TDT, fear conditioning, motor learning)
Phase II to IV and IIT clinical trials in MDD, bipolar disorder, psychosis, psychotherapy. Continuous GCP/ICH certification.

Medical dissertations and master projects

Many medical dissertations and master’s projects have been successfully completed in our group. New projects start on an irregular basis and are closely supervised. Interested students are welcome to apply by email.
Clinical Projects: viktoria.galuba@uniklinik-freiburg.de
Experimental Research Projects: louise.ellen.schuberth@uniklinik-freiburg.de
Information about promotions (PDF in German)

News in the media

Peer-reviewed publications

132 original publications, 7482 citations, h-index 43 (Google Scholar)

» Full List of Publications in PubMed

 

Selected peer-reviewed publications

  • Vestring S, Veleanu M, Perez MC, Schuberth LE, Bronnec M, Li A, Würz LM, Erdogdu F, Stocker J, Moos J, Weigel D, Theiß A, Wendler E, Borger LM, Voita S, Heynicke F, Brandl J, Hummel F, Vivet C, Jocher D, Loewe P, Barmann S, Smoltczyk L, Zimmermann S, Prabhakaran P, Lokaj G, Sarrazin DH, Suarez G, Bernhardt J, du Vinage C, Grießbach E, Lais J, Gensch N, Wojtas M, Knafo S, Wendel J, Warneke J, Grohe JP, Günther S, Moumbock AFA, Domschke K, Serchov T, Bischofberger J, Normann C. The NMDA receptor subunit GluN2D is a potential target for rapid antidepressant action. Nat Commun. 2025 Nov 26;16(1):10613. doi: 10.1038/s41467-025-66774-w. PMID: 41298447; PMCID: PMC12660997.
  • Galuba V, Wolf T, Ihle A, von der Decken F, Mülsch F, Feige B, Vlachos A, Domschke K, Normann C, Vestring S. Development of VEP-based biomarkers to assess plasticity states. Transl Psychiatry. 2025 Oct 20;15(1):426. doi: 10.1038/s41398-025-03676-x. PMID: 41115871; PMCID: PMC12537939.
  • Galuba V, Harbig L, Mülsch F, Feige B, Baldermann JC, Domschke K, Normann C, Vestring S. Sex differences in attentional visual processing but not in plasticity-related modulation of visually evoked potentials. Biol Psychol. 2025 Oct;201:109135. doi: 10.1016/j.biopsycho.2025.109135. Epub 2025 Oct 8. PMID: 41072602.
  • Sarrazin, D. H., Gardner, W., Marchese, C., Balzinger, M., Ramanathan, C., Schott, M., Rozov, S., Veleanu, M., Vestring, S., Normann, C., Rantamäki, T., Antoine, B., Barrot, M., Challet, E., Bourgin, P., & Serchov, T. (2024). Prefrontal cortex molecular clock modulates development of depression-like phenotype and rapid antidepressant response in mice. Nature communications, 15(1), 7257. https://doi.org/10.1038/s41467-024-51716-9
  • Gardner, W., Sarrazin, D. H., Balzinger, M., Marchese, C., Ragno, A., Ramanathan, C., Veleanu, M., Vestring, S., Normann, C., Bourgin, P., & Serchov, T. (2025). The mPFC molecular clock mediates the effects of sleep deprivation on depression-like behavior and regulates sleep consolidation and homeostasis. Molecular psychiatry, 10.1038/s41380-025-03276-7. Advance online publication. doi.org/10.1038/s41380-025-03276-7
  • Vestring, S., Galuba, V., Kern, E., Voita, S., Berens, F., Nasiri, D., Domschke, K., & Normann, C. (2024). Ketamine in multiple treatment-resistant depressed inpatients: A naturalistic cohort study. Journal of affective disorders, 350, 895–899. doi.org/10.1016/j.jad.2024.01.165
  • Vestring, S., Dorner, A., Scholliers, J., Ehrenberger, K., Kiss, A., Arenz, L., Theiss, A., Rossner, P., Frase, S., Du Vinage, C., Wendler, E., Serchov, T., Domschke, K., Bischofberger, J., & Normann, C. (2024). D-Cycloserine enhances the bidirectional range of NMDAR-dependent hippocampal synaptic plasticity. Translational psychiatry, 14(1), 18. doi.org/10.1038/s41398-023-02725-7
  • Reif, A., Bitter, I., Buyze, J., Cebulla, K., Frey, R., Fu, D. J., Ito, T., Kambarov, Y., Llorca, P. M., Oliveira-Maia, A. J., Messer, T., Mulhern-Haughey, S., Rive, B., von Holt, C., Young, A. H., Godinov, Y., & ESCAPE-TRD Investigators (2023). Esketamine Nasal Spray versus Quetiapine for Treatment-Resistant Depression. The New England journal of medicine, 389(14), 1298–1309. doi.org/10.1056/NEJMoa2304145
  • Burkhardt, G., Kumpf, U., Crispin, A., Goerigk, S., Andre, E., Plewnia, C., Brendel, B., Fallgatter, A., Langguth, B., Abdelnaim, M., Hebel, T., Normann, C., Frase, L., Zwanzger, P., Diemer, J., Kammer, T., Schönfeldt-Lecuona, C., Kamp, D., Bajbouj, M., Behler, N., … Padberg, F. (2023). Transcranial direct current stimulation as an additional treatment to selective serotonin reuptake inhibitors in adults with major depressive disorder in Germany (DepressionDC): a triple-blind, randomised, sham-controlled, multicentre trial. Lancet (London, England), 402(10401), 545–554. doi.org/10.1016/S0140-6736(23)00640-2

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