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  A given intensity of injected current will produced a larger potential change in a small cell...

  1.   A given intensity of injected current will produced a larger potential change in a small cell than in a large cell having similar membrane characteristics. Why?

2. A subthreshold current injected into an axon produces a potential change that decrease exponentially with distance from the point of injection. Why does the amplitude of the potencial decrease with distance? Propose a mathematical model, establishing your initials conditions.

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