HCE/Forschungsbereiche & Arbeitsgruppen/Forschungsbereiche und Arbeitsgruppen

Experimentelle Elektrophysiologie und Simulation

Wir untersuchen das elektrophysiologische Verhalten von verschiedenen Zelltypen auf Zellmembranebene und im Zellverbund, zum Beispiel unter hypo- und hyperthermalen Bedingungen. Auf Basis von Ionenstrommodellen beschreiben wir mathematische Veränderungen der zellulären Ionenströme und deren Einfluss auf die elektrische Erregungsausbreitung im Gewebe. Für die experimentelle Validierung unserer Modelle stehen ein Patch-Clamp System sowie eine hochauflösende Multielektrodenarray Messplattform zur Verfügung. Die Aufteilung der Forschungsbereiche in der Elektrophysiologie erfolgt thematisch in vier Arbeitsgruppen:

  • Forschung an Krebszellen
  • Forschung an Herzzellen
  • Forschung an Nervenzellen
  • Forschung an Skelettmuskulatur


Dipl.-Ing. Dr.techn. BSc
Theresa Margarethe
Ass.Prof. Dipl.-Ing. Dr.techn.
Dipl.-Ing. BSc
Univ.-Prof. Dipl.-Ing. Dr.techn.
Automated Patch Clamp System
© Jakob Leiner - TU Graz/HCE


Background: Traumatic brain injury (TBI) is a leading cause of death and disability among young adults. The impairment of the often very young patients in daily life is a heavy burden for the affected person and leads to high healthcare costs. In recent years, electrostimulation of neurons has been suggested a promising approach to induce functional recovery of injured neuronal connections. However, standard electrode stimulation techniques require invasive methods and wiring of the patient. Purpose: We aim to combat TBI-induced disabilities by re-establishing neuronal connectivity. We will use light-sensitive semiconductors (photocaps) made from industrial colorants. They are easily available, stable, and non-toxic. Photocaps enable electrical stimulation of neurons with safe light intensities without the need for external wiring. Hypothesis: We suppose that the stimulation of neuronal cells via light-activated photocaps fosters functional recovery after TBI. Approach: In a multidisciplinary research approach we investigate the photocaps’ performance and effects on living systems. Cultured cells are an invaluable tool to develop optimal stimulation parameters before progressing to healthy and injured brain tissue. We will investigate the optimal time window after TBI in which stimulation yields the most extensive regenerative results. Our interdisciplinary research program brings together young independent researchers with backgrounds from neuroscience (Dr. Muammer Ücal), structural biology (Dr. Karin Kornmüller), electrophysiology (Dr. Susanne Scherübel) and electrical engineering (Dr. Theresa Rienmüller). Experiments will be conducted at the Medical University of Graz and Graz University of Technology.
Beginn: 30.04.2019

Theresa Margarethe Rienmüller
Ass.Prof. Dipl.-Ing. Dr.techn.

Tel. +43 (316) 873 - 7396
Fax +43 (316) 873 - 107396