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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Nyenhuis, J.A. Bourland, J.D. Foster, K.S. Graber, G.P. Kildishev, A.V. Schaefer, D.J. |
| Copyright Year | 1999 |
| Description | Author affiliation: Purdue Univ., West Lafayette, IN, USA (Nyenhuis, J.A.) |
| Abstract | The strength-duration relationship for stimulation by pulsed magnetic fields was measured in 84 human subjects. Spatial and temporal characteristics of dB/dt are similar to those in whole-body MRI y and z gradient coils. Pulse durations ranged from 0.1 ms to 1 ms. Strength response ranging from no sensation to intolerable was classified by the subject on a 0 to 10 scale. The thresholds were fit to the hyperbolic strength-duration equation with parameters of rheobase b and chronaxie c. For induction of onset of perception (score=1) by the y-coil, (b,c)=(14.9 T/s, 0.365 ms) and for the z-coil (b,c)=(26.2 T/s, 0.378 ms). Induction of an intolerable sensation (10) requires dB/dt approximately twice that required to achieve perception. |
| File Size | 97865 |
| File Format | |
| ISBN | 0780356748 |
| ISSN | 1094687X |
| DOI | 10.1109/IEMBS.1999.804233 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1999-10-13 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Magnetic stimulation Humans Magnetic resonance imaging Coils Magnetic fields Pulse amplifiers Pulse measurements Magnetic field measurement Biomedical imaging Electric variables measurement |
| Content Type | Text |
| Resource Type | Article |
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