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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

ReTune Paper of the Month 08/2026

ReTune Paper of the Month 08/2026

Sep 14, 2026

Hartig, Friedrich, Signoret-Genest et al. 2026 Nat Commun.
Berlin Brains 2026

Berlin Brains 2026

Sep 9, 2026 | Zeiss Großplanetarium, Berlin

The Berlin Brains 2026 takes place in Berlin, Germany.
ReTune Paper of the Month 07/2026

ReTune Paper of the Month 07/2026

Aug 14, 2026

Kohl et al. 2026 NPJ Parkinsons Dis.
EAN Congress 2026 Impressions

ReTune Research Showcased at the EAN Congress 2026

Aug 12 , 2026

ReTune researchers presented new findings on adaptive deep brain stimulation, dystonia biomarkers, and Parkinson's caregiver support at the EAN Congress 2026 in Geneva
ReTune Neuroscience Colloquium

ReTune Neuroscience Colloquium

Jul 14, 2026 | 12.00 | Zoom

Hesheng Liu
ReTune Paper of the Month 06/2026

ReTune Paper of the Month 06/2026

Jul 10, 2026

Weigl et al. 2026 NPJ Parkinsons Dis.

All News & Events

Publications

Real-world use and evaluation of a generative AI chatbot for Parkinson’s disease information: a prospective observational study

Lange, Mardi et al. 2026 Eur Lancet Reg Health

This study aimed to evaluate the real-world safety of a deployed patient-facing medical AI chatbot and to introduce CARE-LLM, a proposed framework for conversation-level post-market surveillance.

Vestibular nucleus stimulation for ameliorating locomotor dynamics in a Parkinsonian mouse model

Hartig, Friedrich, Signoret-Genest et al. 2026 Nat Commun.

Postural and locomotor dysfunction represent axial symptoms of Parkinson’s disease (PD), which remain poorly treated by medication and deep brain stimulation. Whilst non-invasive neuromodulation of the vestibular system via the vestibular nucleus complex (VNC) offers a novel therapeutic avenue, the underlying circuits remain poorly characterized. Here we show that the mouse VNC feeds extensive Vglut2-defined projections into striato-thalamo-subthalamic and caudal medulla motor hubs and receives substantial input from the sensorimotor cortex. Optogenetic activation of excitatory VNC neurons increased cFos-based activity in basal ganglia-associated and brainstem motor targets. Pose dynamics and motion analysis showed enhanced behavioural modularity and locomotion. In a mouse model of PD, stimulation further favored naturalistic gait patterns through improved motor coordination. Our data identify excitatory VNC processes as candidates for therapeutic targeting of axial motor dysfunction in PD.

Neuroanatomical correlates of stroke-related dizziness and vertigo: secondary analysis from the INSPiRE-TMS trial

HJ, Kufner et al. 2026 J Neurol.

Dizziness and vertigo are common and debilitating neurological symptoms among patients visiting the emergency department (ED). Possibly because the symptoms are not captured by standard stroke severity tools such as the NIHSS (National Institutes of Health Stroke Scale), their network-level neuroanatomical correlates—particularly potential supratentorial contributions—remain incompletely characterized. Therefore, we aim to investigate the neuroanatomical substrates of post-stroke dizziness and vertigo.

Who Falls After Stroke? Evidence From a Prospective Strohe Cohort.

Kufner, Tang et al. 2026 Eur J Neurol.

This study aimed to identify lesion-derived functional networks associated with impaired mobility, gait, and fall risk in subacute stroke, and to determine whether disruption to these networks is associated with falls during the six-month follow-up.

Adaptive deep brain stimulation in Parkinson disease: clinical implementation and outlook.

Florin, Kühn. 2026 Nat Rev Neurol.

This Clinical Outlook considers the principles behind adaptive DBS, current clinical recommendations and practical considerations in its implementation, as well as remaining challenges.

All Publications

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