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TRR 295

Retuning dynamic motor network disorders using neuromodulation

Research insights to improve the therapy of brain disorders by the Transregional Collaborative Research Center TRR 295 ReTune, which is funded by the German Research Foundation (DFG).

Standard of care

Developing innovative neuromodulation therapies

Many neurological diseases are associated with movement disorders. Neuromodulation, a method that applies therapeutic electric currents or magnetic fields to the brain, has demonstrably helped restore motor deficits in movement-impaired patients. While deep brain stimulation (DBS) is considered the gold standard for treating Parkinson´s disease (PD) and various forms of tremor or dystonia, these therapies are not yet available for many other brain diseases.

Brain network dynamics and function

In the brain, approximately 86 billion nerve cells interact spatially and temporally to create a highly complex dynamic network whose exact functioning remains one of the great mysteries of brain research. One research focus of the TRR 295 ReTune is to understand the mechanisms and function of dynamic neuronal networks in health and disease in order to retune altered networks by invasive or non-invasive brain stimulation. The aim is to develop innovative neuromodulation systems that respond to specific demands, precisely target individual symptom cycles, and are activated only when disease symptoms occur.

Collaborative Research Centre TRR 295 ReTune

The Collaborative Research Centre TRR 295 ReTune consists of an interdisciplinary team of physicians, neuroscientists, and basic researchers from the Charité – Universitätsmedizin Berlin, Julius-Maximilians-Universität Würzburg, and other internationally renowned institutions in Düsseldorf, Berlin, Würzburg, and Jerusalem. This multidisciplinary consortium is collaborating on various research projects, each addressing specific aspects of motor network disorders. The joint project is being funded with 22 million euros by the German Research Foundation (DFG) for a current period of eight years starting in 2020.

Learn more about our TRR 295

“Our vision is to develop network-specific, yet minimally invasive neuromodulation methods for clinical practice to set new standards in the treatment of complex neurological movement disorders.”

Prof. Dr. Andrea Kühn, spokesperson of the TRR 295 ReTune and Head of Movement Disorders and Neuromodulation Unit at the Department of Neurology with Experimental Neurology, Charité – Universitätsmedizin Berlin.

News & Events

World Parkinons Day 2026

World Parkinons Day 2026

Apr 11, 2026

For World Parkinson’s Disease Day on April 11, Charité released a feature on Ilias Triantafyllakis, a patient at Charité Universitätsklinikum Berlin who is undergoing treatment for Parkinson’s disease.
NCM 2026: Neural Control of Movement

NCM 2026: Neural Control of Movement

Apr 20-24, 2026 | Kobe, Japan

The Neural Control of Movement in 2026 takes place in Kobe, Japan.
Deutscher Kongress für Parkinson und Bewegungsstörungen

Deutscher Kongress für Parkinson und Bewegungsstörungen

Apr 16-18, 2026 | Leipzig, Germany

Der Deutsche Kongress für Parkinson und Bewegungsstörungen findet 2026 in Leipzig statt.
Brain Awareness Week 2026

Brain Awareness Week 2026

Mar 17-20, 2024 | HHU Düsseldorf

As part of Brain Awareness Week, Heinrich Heine University Düsseldorf offered engaging talks, lab tours, and interactive activities, providing insights into neuroscience research ranging from language processing to advanced brain stimulation in Parkinson’s disease.
Victoria Witzig at DBS Expert Summit 2026

Network-Based and Adaptive Approaches to Deep Brain Stimulation at DBS2026

Mar 16, 2026

The 3rd Expert Summit on the Future of Deep Brain Stimulation brought around 500 researchers and clinicians to Würzburg to discuss emerging developments in neuromodulation. Central themes included network-based models of brain function, electrophysiological biomarkers for adaptive DBS, and the growing role of artificial intelligence in clinical decision support.
Dr. Bahners presenting research at DGKN26

EEG-Based Algorithm Predicts Optimal DBS Contacts in Parkinson’s Disease

Mar 13, 2026

At DGKN 2026, ReTune researchers presented advances in neuromodulation, including a new EEG-based method to predict optimal DBS contacts in Parkinson’s disease.

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Publications

The graded effect of propofol in electrophysiology-guided navigation during deep brain stimulation surgery.

Issabenkov et al. 2026 NPJ Parkinsons Dis.

We performed multimodal analysis on 583 microelectrode recordings (MER) from PD patients undergoing DBS surgery under local anesthesia (LA) and GA.

The Virtual Brain links transcranial magnetic stimulation evoked potentials and inhibitory neurotransmitter changes in major depressive disorder.

Hofsähs et al. 2026 Imaging Neurosci (Camb).

Transcranial magnetic stimulation evoked potentials (TEPs) show promise as a biomarker in major depressive disorder (MDD), but the origin of the increased TEP amplitude in these patients remains unclear. Gamma aminobutyric acid (GABA) may be involved, as TEP peak amplitude is known to increase with GABAergic activity in healthy controls. We employed a computational modeling approach to investigate this phenomenon.

Probabilistic mapping of tremor control and gait ataxia risk in deep brain stimulation.

Weigl, Pistorius et al. 2026 J Neural Transm (Vienna).

We analysed long-term tremor and gait outcomes in 73 patients from two DBS centres with chronic bilateral (sub)thalamic DBS, assessed before surgery and at follow-up after 12 months using blinded ratings of standardized video recordings. We evaluated the influence of demographic, clinical, and stimulation parameters and applied voxel-wise probabilistic stimulation mapping to identify anatomical regions associated with tremor suppression and stimulation-induced gait ataxia.

Deep neurobehavioral phenotyping uncovers neural fingerprints of locomotor deficits in Parkinson’s disease.

Garulli et al. 2026 NPJ Parkinsons Dis.

Here, we investigated the neural correlates of gait sequence interruptions with a deep phenotyping approach.

Macroscale Gradient-Informed Neural Oscillation Topography in Parkinson’s Disease.

Ding et al. 2026 Mov Disord.

We characterize the frequency-specific reorganization of the cortical hierarchy across resting and motor states using functional gradients. We sought to identify topographic biomarkers that emerge across different behavioral states and determine whether these hierarchical features provide predictive power for global motor severity.

Decoding the impact of visual states on adaptive deep brain stimulation feedback signals in movement disorders.

Zhu, Merk et al. 2026 NPJ Parkinsons Dis.

We investigated the impact of visual states on basal ganglia oscillatory biomarkers, comparing local field potentials (LFPs) dynamics between Parkinson's disease (PD) and dystonia and developing a decoding model for state identification.

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