What is the relative electrical conductivity of copper, sodium, and
potassium?  If it makes it any easier, how does the conductivity of a
neuron compare with that of copper wiring?  If the latter question is
easier to answer, please answer that one instead of the former.  All I
need is an approximate comparison that shows which is more conductive
and how significant the difference is.  For example, if copper wiring
was a lot more conductive an appropriate answer might be "Copper is
about 10 times more conductive than neural tissue."  If the first
question is easier to answer, answer the first one instead.  I'm just
doing some basic preliminary research, so I'm not looking for a
million dollar answer:)

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Request for Question Clarification by sublime1-ga on 29 Apr 2004 18:17 PDT

mfranco...

Neural tissue is not conductive in the same sense that
copper wire is. Neural tissue transmits an electrical
signal by the use of chemical changes which produce an
ion flow, as noted in my answer to this previous question:
http://answers.google.com/answers/threadview?id=263103

Perhaps, in view of this, you would be interested to know
how the speed of an electrical impulse through a copper
wire compares to the speed of an impulse transmitted
through nerve tissue? This would provide some comparison 
between two very different modes of conductivity.

sublime1-ga