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Research Projects

Iossifidis Lab auf der Bernstein Konferenz 2025

By jannis on October 2, 2025
Iossifidis Lab auf der Bernstein Konferenz 2025
Iossifidis Lab

🚀 Wir freuen uns, bekannt zu geben, dass das Iossifidis Lab an der Bernstein-Konferenz teilgenommen und dort spannende Forschungsarbeiten unserer talentierten Teammitglieder Marie Dominique Schmidt, Aline Xavier Fidencio, Felix GrĂŒn und Stephan Lehmler prĂ€sentiert hat.

Unsere BeitrÀge umfassten:
đŸ”č Error-related potentials and reinforcement learning for neuroadaptive systems
 FidĂȘncio AX, Iossifidis I

đŸ”č A Framework to Model Your Model-Based / Model-Free Action Selection Hypothesis
 GrĂŒn F, Iossifidis I

đŸ”č Activation-Based Indicators of Memorization in ReLU Artificial Neural Networks: A Computational Perspective
 Lehmler SJ, Iossifidis I

đŸ”č Predicting Upper Limb Muscle Activity from Kinematics Using LSTM Networks
 Schmidt MD, Glasmachers T, Iossifidis I

Wir sind stolz auf die innovativen Arbeiten unseres Labs und dankbar fĂŒr die Möglichkeit, einen Beitrag zu dieser lebendigen wissenschaftlichen Gemeinschaft zu leisten!

Abstracts und Konferenz:
https://bernstein-network.de/bernstein-conference/

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Vom Rollator fĂŒr Kinder zum intelligenten Bewegungs–From rollator for children to intelligent movement coach – BmBF.START-Interaktiv

By jannis on December 27, 2022
Vom Rollator fĂŒr Kinder zum intelligenten Bewegungs–From rollator for children to intelligent movement coach – BmBF.START-Interaktiv

Cerebral palsy (CP) is the most common cause of motor impairment in children. In Germany, around 22,000 children under the age of 15 are affected. To improve motor and cognitive skills in the long term, regular and sustained exercise is medically recommended. RooWalk’s walking aid promotes muscle strength, improves motor control and increases intrinsic motivation and enjoyment of exercise, which helps prevent long-term damage from disability and improves quality of life. It also has the potential to reduce direct medical care costs and the need for long-term care.

As part of the BmBF-funded project, Berlin-based start-up RooWalk (Dr. Benjamin Pardowitz, M. Sc. Maria Enge), together with Ruhr West University of Applied Sciences (Prof. Dr. Ioannis Iossifidis) and the support of Charite, are developing an intelligent walking aid that helps children with motor impairments achieve greater mobility and independence. The patented electric walking aid, which acts as a digital movement coach, recognizes the user’s individual movement patterns and intentions and supports them accordingly. The data collected by the device helps parents, physical therapists and physicians learn about the user’s movement status in everyday life and any changes so they can make the best possible treatment decisions.

The research findings will be validated through a demonstrator and clinical trials to evaluate their effectiveness and identify potential applications for other diagnoses and for adults. “It is the aspirational steps of children that motivate us to take on the development work, funding to market, certification as a medical device and reimbursement for affected families,” said the founders, who are driven by a family motivation.

—————————- deutsch——————————-

Zerebralparese (CP) ist die hĂ€ufigste Ursache fĂŒr motorische BeeintrĂ€chtigungen bei Kindern. In Deutschland sind rund 22.000 Kinder unter 15 Jahren betroffen. Um die motorischen und kognitiven FĂ€higkeiten langfristig zu verbessern, wird regelmĂ€ĂŸige und anhaltende Bewegung medizinisch empfohlen. Die Gehhilfe von RooWalk fördert die Muskelkraft, verbessert die motorische Kontrolle und steigert die intrinsische Motivation und Freude an der Bewegung, was dazu beitrĂ€gt, langfristige SchĂ€den durch Behinderungen zu verhindern und die LebensqualitĂ€t zu verbessern. Sie hat auch das Potenzial, die Kosten fĂŒr die direkte medizinische Versorgung und den Bedarf an Langzeitpflege zu senken.

Im Rahme des vom BmBF geförderten Projektes entwickeln das Berliner Start-up RooWalk (Dr. Benjamin Pardowitz, M. Sc. Maria Enge) mit der Hochschule Ruhr West (Prof. Dr. Ioannis Iossifidis) und der UnterstĂŒtzung der Charite eine intelligente Gehhilfe, die Kindern mit motorischen BeeintrĂ€chtigungen zu mehr MobilitĂ€t und SelbststĂ€ndigkeit verhilft. Die patentierte elektrische Gehhilfe, die als digitaler Bewegungscoach fungiert, erkennt die individuellen Bewegungsmuster und -absichten der Nutzer und unterstĂŒtzt sie entsprechend. Die vom GerĂ€t gesammelten Daten helfen Eltern, Physiotherapeuten und Ärzten, sich ĂŒber den Bewegungsstatus des Nutzers im Alltag und eventuelle VerĂ€nderungen zu informieren, damit sie die bestmöglichen Therapieentscheidungen treffen können.

Die Forschungsergebnisse werden durch einen Demonstrator und klinische Studien validiert, um ihre Wirksamkeit zu bewerten und mögliche Anwendungen fĂŒr andere Diagnosen und fĂŒr Erwachsene zu ermitteln. “Es sind die angestrebten Schritte der Kinder, die uns motivieren, die Entwicklungsarbeit, die Finanzierung bis zur MarkteinfĂŒhrung, die Zertifizierung als Medizinprodukt und die Kostenerstattung fĂŒr betroffene Familien in Angriff zu nehmen”, so die GrĂŒnder, die von einer familiĂ€ren Motivation angetrieben werden.

Comments Off on Vom Rollator fĂŒr Kinder zum intelligenten Bewegungs–From rollator for children to intelligent movement coach – BmBF.START-Interaktiv  |  Filed under: Grant  |  Tags: research-project

Towards wearable BCI systems that leverage contextual neuromechanics and edge-computing

By jannis on November 25, 2021
Towards wearable BCI systems that leverage contextual neuromechanics and edge-computing

Bilateral Cooperation in Computational Neuroscience between
Germany and USA (under review)

Consortium: Prof. Dr. Francisco Valero-Cuevas, University of Southern California (US), Prof. Dr. Christian Klaes, Ruhr University Bochum (GER), Prof. Dr. Karsten Seidl, University of Duisburg-Essen (GER), Prof. Dr. Ioannis Iossifidis, Ruhr West University of Applied Sciences (GER)

We have simulated hand gestures (left column) in the MuJoCo environment, and extracted their angle space representations in full and reduced spaces (right column). Using spider charts (a) 3D model of the five different hand gestures. i: power grip 1, ii power grip 2, iii: Precision grip 1, iV: precision grip 2, v: the claw gesture. (b) Radar plot representations of the19 joint angles i: without dimensionality reduction ii: with only the first two PCs 

We proposes a novel brain computer interface (BCI) for humans paralyzed by spinal cord injury (SCI) that explicitly considers the neuromechanical link between brain, body and context. A BCI uses signals from electrodes implanted in the brain to control extracorporeal devices. A computational decoder is the critical interpreter between neuronal activity and the extracorporeal device. Great progress has been made in biocompatible electrodes and implantable hardware, but effective decoders are still the bottleneck of this technology. In contrast to the coevolution of brain, body and context, current decoders tend to be divorced from the body’s neurophysiological and biomechanical state but also from environmental constraints. Our synergistic team of experts will create a novel BCI based on “sensorimotor Gestalt” principles and context-sensitive AI assistance. The BCI pipeline will consist of a spike-train decoder and an arm exoskeleton as the extracorporeal device. In Aim 1 we will develop a high-fidelity neural decoder conditioned on the neuromechanical state of the brain and the exoskeleton. In Aim 2, the decoder will additionally use contextual priors that take environmental constraints into account, e.g., the type of tasks and objects. In Aim 3 we will deliver a context-aware edge computing implementation of the entire upper extremity BCI system. This novel approach in BCI for real-world environments will set the stage for truly useful edge computing exoskeletons for SCI patients.

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Leitmarktwettbewerb Gesundheit.NRW: Projekt: „REXO – Smarte Rehabilitation der oberen ExtremitĂ€t durch ein intelligentes Soft-Exoskelett“

By jannis on March 23, 2021

https://www.leitmarktagentur.nrw/lw_resource/datapool/_items/item_718/pdb_ge-2-2-023.pdf

Projektleitung:Hochschule Ruhr West, MĂŒlheim a.d.R.Kontakt:Herr Prof. Dr. Ioannis Iossifidis Tel.: 0208 88254-806Laufzeit:01.10.2019 – 30.09.2022Aktenzeichen:GE-2-2-023Verbund:Ruhr-UniversitĂ€t Bochum; ausfĂŒhrende Stelle: UniversitĂ€tsklinikum Knappschaftskranken- haus Bochum GmbHRuhr-UniversitĂ€t Bochum; ausfĂŒhrende Stelle: BG UniversitĂ€tsklinikum Bergmannsheil gGmbHSNAP GmbH, Bochum

Projektbeschreibung:

BeeintrĂ€chtigung der Arm- und Greiffunktionen nach verschiedenen neurologischen Erkran- kungen schrĂ€nken die Teilhabe der betroffenen Patienten und Patientinnen am Berufs- und Alltagsleben stark ein und stellen eine große Herausforderung fĂŒr den Rehabilitationsprozess dar. Zur Intensivierung der konventionellen Therapie und damit Verbesserung des Rehabilita- tionserfolgs ist ein hochqualitatives, eigenstĂ€ndiges und alltagsnahes Training notwendig. Die SchlĂŒsselkomponente dazu ist ein biomechanisch konzipiertes, adaptives Exoskelett fĂŒr die oberen ExtremitĂ€ten, das in diesem Projekt entwickelt und explorativ am Patienten einge- setzt werden soll. Das Exoskelett berĂŒcksichtigt die individuellen Randbedingungen der Er- krankung und kompensiert soweit wie notwendig die Dysfunktion, die die AusfĂŒhrung von notwendigen Bewegungen verhindert oder unterstĂŒtzt das Rehabilitationstraining durch an- tagonistische Aktivierung. Dabei liefert das System aufgrund intelligenter sensorischer und aktuatorischer VerknĂŒpfung immer genau so viel UnterstĂŒtzung oder Korrektur, wie in der je- weiligen Patientensituation notwendig ist.

Mit dem Exoskelett wird ein ganzheitliches Rehabilitationssystem entwickelt. Das System be- inhaltet den Entwurf und die Implementierung von Bewegungsaufgaben in der virtuellen Rea- litĂ€t, ein auf Biosignalen basierendes Feedback-System sowie einen generischen Dekoder fĂŒr invasive und nicht invasive Brain-Computer- Interfaces. In der technischen Umsetzung vereint das Soft- Exoskelett moderne, sehr leichte, belastbare Materialien mit einer intelligenten, adaptiven Regelung, die vom TrĂ€ger bzw. der TrĂ€gerin keinerlei Einstellungen verlangen. Im Ergebnis ergeben sich neue Perspektiven fĂŒr eine verbesserte Rehabilitation von Arm- und Handfunktionen. Dadurch kann die Versorgung von Patienten und Patientinnen maßgeblich verbessert werden.

Gesamtausgaben: 2.451.259,58 € Zuwendungssumme: 2.134.897,53 €

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Virtual reality based Machine Learning for Arm-Hand Function Evaluation and Support System (VAFES)

By jannis on November 2, 2020
Virtual reality based Machine Learning for  Arm-Hand Function Evaluation and Support System (VAFES)

Consortium: Prof. Dr. Ioannis Iossifidis (PI, consortium lead), Dr. Christian Klaes (PI), Ruhr University Bochum-Knappschaft University Hospital, Prof. Dr. Martin Tegenthoff (PI) Ruhr University- Bergmannsheil University Hospital, Dr. Corinna Weber, Snap GmbH (PI))

  • Project duration: 01/2020 — 12/2022
  • Funding volume: € 2.092.917,-
Character generated from 2D images and animated within Unity3D

Restrictions in hand and arm function are a highly relevant consequence of neurological diseases, such as Parkinson’s disease, strokes or spinal cord injuries, and have an enormous impact on the quality of life and participation of affected patients. A differentiated diagnosis of hand and arm function is of great importance both for therapy control and for early detection. At present, however, very different and only conditionally objectifiable test instruments are used for specific indications, which result in an inaccuracy retest and make it difficult to compare results. In addition, relevant biosignals such as EEG and EMG are not used or not used in direct combination with the functional tests. 

In this project a standardized test environment in Virtual Reality (VR) will be developed. Motion trackers and VR gloves cover a broad spectrum of relevant motion parameters. In particular, synchronous electroencephalographic (EEG) recordings supplement the motion data with neuronal signals. This combination makes it possible for the first time to use modern Machine Learning (ML) algorithms, such as deep learning, in the context of diagnosis and therapy of neurological diseases with hand and arm dysfunctions. 

The easy-to-use functional test can be used in particular for complex extrapyramidal and/or cerebellar movement disorders in order to objectively classify the movement deficits and compare them with comparative data. Due to the increased sensitivity of the test and a generative model of arm movements, different stages of the disease can be better distinguished and the course of the disease more clearly documented. The early detection of diseases with a gradual course should also be improved. Therapeutically, the insights gained in tremor treatment – here by means of a hand exoskeleton to be developed in the project – will be used to establish VR-supported neurofeedback therapy approaches for extrapyramidal and cerebellar movement disorders and for fine calibration for deep brain stimulation for Parkinson’s treatment. 

Movement and correlated EEG data from both healthy volunteers and patients will be used to build a publicly accessible database. The database will be made available as a reference for the development and validation of models and methods for the scientific community and companies. The developed modular hardware and software components will be used clinically / scientifically (VR test environment) as well as economically (test instrument, decoder, hand exoskeleton).

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Copyright © Ioannis Iossifidis 2020 iLab: From Brain to Machine and Back.

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