Any digital analogy fails, since the biological signals attenuate with distance from source. A digital gate acts as a repeater, re-boosting the signal strength to original level. That is not the case with neurons/dendrites.
Perhaps a better model would be for each neuron to be modeled as a current source instead of a voltage source. The more parallel paths that current is funneled into, the smaller it gets, until it is below the threshold of detection. You can have your transistor model allowing/blocking that current, but never boosting it back up.
Perhaps a better model would be for each neuron to be modeled as a current source instead of a voltage source. The more parallel paths that current is funneled into, the smaller it gets, until it is below the threshold of detection. You can have your transistor model allowing/blocking that current, but never boosting it back up.