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. Author manuscript; available in PMC: 2010 Apr 19.
Published in final edited form as: Ann Biomed Eng. 2009 Sep 23;38(1):177–186. doi: 10.1007/s10439-009-9804-0

FIGURE 6.

FIGURE 6

Comparisons of realistic dipole center (purple circle) and estimated dipole location using an SCD estimate (blue triangle) and when ignoring the volume conductor effects (or assuming a free-space model) (green square). The dipole position initiates in the top right of the graph and progresses toward the bottom left corner over a period of 20 s (markers show the solutions at approximately 3-s intervals). The left plot shows the results when using the full magnetic field to estimate the SCD and the right plot when only the Bz was used. The values calculated using the free-space model do not include the volume conductor effects and cannot be measured in real life. The large errors using the torso model have resulted from the large distortions in the magnetic field due to the volume conductor effects.