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  • $\begingroup$ this is kinda related: physics.stackexchange.com/questions/201394/… although you might have seen it already $\endgroup$
    – user81619
    Commented Aug 22, 2015 at 14:21
  • $\begingroup$ I actually did not find this particular post, but I have been reading Webster's "Medical Instrumentation" which says pretty much the same thing. The problem with this explanation, I find, is that it basically says that the heart is one big dipole, which doesn't make sense to me. I really think the detected field is the contribution of multiple small signals coming from individual cells, although I have not found anything to support this idea. $\endgroup$
    – victorbg
    Commented Aug 22, 2015 at 14:31
  • 1
    $\begingroup$ Maybe rephrase your question with the link in it and the question in your comment included? Or ask it as a seperate question? I know you are dealing with muscle cells, but I seem to remember something about squid neurons being individually measured (as they are so large). $\endgroup$
    – user81619
    Commented Aug 22, 2015 at 15:29