M. Graeser, J. Bohnert, and O. Doessel. Abschätzung der muskelstimulierenden Wirkung von Magnetwechselfeldern im kHz-Bereich. Estimating thresholds for stimulating muscles by alternating magnetic fields in the kHz-range. In Biomedizinische Technik / Biomedical Engineering (Proceedings BMT2010), vol. 55(s1) , 2010
Alternating magnetic fields induce AC currents in conductive materials. These currents can depolarize the cell-membrane, causing an action potential. In current literature stimulation thresholds for alternating magnetic fields were published up to a frequency of 1 kHz only. Beyond 1 kHz there are thresholds for electrode stimulation only. To convey these thresholds for magnetic fields the current densities caused by the alternating magnetic fields in an anatomical model were calculated. With these current densities the necessary flux densities were reevaluated. The intention of this paper was the development of a system for inductive stimulation of peripheral muscles to validate the simulation in the frequency range from 1 kHz to 50kHz.
Student Theses (1)
M. Gräser. Bestimmung von Schwellwerten zur induktiven Muskelstimulation im Bereich von 7,4 kHz bis 25 kHz. Institut für Biomedizinische Technik, Karlsruher Institut für Technologie (KIT). Diplomarbeit. 2010