Haueisen leads biomagnetic-source modelling and analysis and OPM-based magnetomyography/MEG, bridging bioelectromagnetism theory, instrumentation and clinical neuroscience (with the Biomagnetic Center Jena). The work complements NV-center diamond ensemble quantum sensing (DEER, NMR, T1 relaxometry) at pT/sqrt(Hz) sensitivity by pursuing the same field-sensing goals in a different physical platform.