How does the eletrical field of the nervous system work? How come it isn't affected by electromagnets or EMP? I really, really don't have the foggiest idea, and I would love an explination.

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This site has a pdf file you can download with a complete description of the function and components involved. I hope this helps

I would bet that they are affected by EMP's though.

Electrical impulses in the body are caused by the movement of ions (mostly potassium, sodium, and chlorine ions) between neurons. There are at least two reasons that magnets don't have as much of an effect on current in the body as they do on currents in wires.

In wires, the current is in the form of moving electrons. The ions in the human body are around 50,000 times heavier than electrons. That means that, if everything else were the same, the force necessary to produce the same movement would be 50,000 times as large.

Electrons in wires are also much more free to move than ions in a liquid.

What this all amounts to is you need a much, much stronger magnet to cause the same sort of effect on the current in the human body as compared to in a wire. You can cause some effect, though. There is a treatment called transcranial magnetic stimulation (TMS) that uses powerful magnets to actually alter currents in your brain. It is used to treat a number of mental illnesses, including depression and schizophrenia. It is proven that it affects currents in your brain, and studies over the past decade or indicate that it can help some patients.

Great answer methos, I am curious though, do you know if EMP's (Electro Magnetic Pulses) can affect the neural system? I used to have a friend who worked at a television station and the big transmitter tower there puts off electromagnetic fields that you can feel when you are anywhere near it. It creates a very strong tingling sensation.

I would imagine that they have some effect, but I don't know what kind or how strong.