Århem/Nilsson Laboratory

Research focus

We focus on K channels and dopamine receptors, using electrophysiology, pharmacology, molecular biology, and theoretical-mathematical methods. The ion channels are studied with voltage clamp technique, and the dopamine receptors by recording currents from receptor-activated GIRK channels, which provide a unique time-resolved readout of receptor activity.

For the analysis of channel regulation of neuronal firing patterns, we use bifurcation theory and dynamic clamp technology, injecting currents based on real-time simulations to mimic those of ion channels, into nerve cells. We are presently developing an improved version of dynamic clamp offering increased clamp stability, aiming at using this technique on myelinated axons.

The studies will help us to understand the mechanisms of therapeutic drugs on ion channels and receptors, and the role of ion channels in conditions such as anesthesia, epilepsy, MS, and ALS. They are also of relevance for understanding disorders of the dopamine system, such as psychosis and Parkinson’s disease.