1. Mayo Systems Electrophysiology Laboratory Department of Neurology Mayo Clinic 200 First St SW Rochester Minnesota 55905
2. International Clinical Research Center St. Anne's University Hospital Brno Czech Republic
3. Department of Physiology and Biomedical Engineering Mayo Clinic 200 First St SW Rochester Minnesota 55905
4. Czech Institute of Informatics, Robotics, and Cybernetics Czech Technical University in Prague Prague Czech Republic
5. Institute of Scientific Instruments The Czech Academy of Sciences Brno Czech Republic
6. Department of Neurology University of Minnesota Minneapolis Minnesota 55455
7. Department of Neurosurgery Mayo Clinic 200 First St SW Rochester Minnesota 55905