The effects of electric fields on firing rate depend on synaptic connectivity.

<p>Normalized change in the average neuronal firing rate as a function of the number of neurons in the network model (<b>A</b>) or the numbers of pre-synaptic excitatory inputs (<b>B</b>). <b>C</b>: Same than in <b>B</b> but with constant total synaptic input. Effect of fields on firing rate depends on number of input synapses and not network size.