Title :
Stimulation of excitable tissue with time varying magnetic fields
Author_Institution :
Hillenbrand Biomed. Eng. Center, Purdue Univ., West Lafayette, IN, USA
Abstract :
The induced eddy-current waveform that causes stimulation of excitable tissue is proportional to the derivative of the current in the excitation coil; this in turn depends on the damping coefficient (D) in the discharge circuit. The induced current waveform is polyphasic when D is less than 1.0; it is biphasic when D is equal to or greater than 1.0. The duration of the induced current pulse is an important factor in determining the threshold current for stimulation. The relationship between these factors is presented.<>
Keywords :
biological effects of fields; biomagnetism; eddy currents; biphasic; damping coefficient; discharge circuit; excitable tissue stimulation; excitation coil current derivative; induced eddy-current waveform; polyphasic; threshold current; time varying magnetic fields;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.95252
