Senior Researchers and Project Managers

Rachel Stegeman


Rachel graduated with her PhD in Molecular Biology and Biochemistry from Purdue University before joining our lab. Her current research focuses on investigating the mechanisms by which ultrasound stimulation modulates the immune system. To investigate this, Rachel uses single cell RNA sequencing (scRNAseq) to determine transcriptome-wide changes within different immune cell types (human PBMCs) after ultrasound stimulation. She also helps coordinate an ongoing clinical trial looking at ultrasound treatment for Rheumatoid Arthritis in collaboration with DARPA, Dr. Bryce Binstadt's lab and Dr. Erik Peterson at the University of Minnesota's Medical School and Center for Immunology.


Daniel Zachs



Graduated with a MS degree in Biomedical Engineering from University of Connecticut. He is a researcher investigating stimulation techniques of the peripheral nervous system and end-organs in various animal models which will subsequently be applied to humans. Daniel's research is focused on noninvasive modulation of the interface between the immune system and the nervous system. He is currently working on projects in collaboration with Medtronic, DARPA, Dr. Bryce Binstadt's lab and Dr. Erik Peterson’s lab in the University of Minnesota's Medical School and Center for Immunology.


Bo Connelly



Bo Connelly, JD is Project Manager for the Auditory Nerve Implant (ANI) grant led by the Hubert Lim. The ANI project seeks to develop a new hearing aid device that builds on the success of cochlear implant technology.  Bo is also the Administrative Manger of the Physical Sciences Oncology Center and Strategic Research Initiatives Program Manager for the Institute for Engineering in Medicine.  Bo has previously led a Phase III, multi-center clinical trial, served as General Counsel and Project Manager for a consulting firm, led a start-up and an independent grant-writing firm, and served in the federal government.


Karl-Heinz Dyballa


Graduated in 2008 with a Diploma in Medical Informatics from the University of Heidelberg, Germany. He is currently working at Hannover Medical School in Germany as a part of the NIH funded project for evaluating the safety and efficacy of a new auditory midbrain implant in an ongoing clinical trial. His research will investigate the perception of different types of electrical stimulation patterns in auditory midbrain implant users in order to develop new speech coding strategies.