The average of membrane potentials of neurons in the element, that is
V= NeVe+NiVi / Ne + Ni
where Ne, N₁ are the numbers of excitatory and inhibitory neurons and V₂ and Vi are the (average) membrane potentials of excitatory and inhibitory neuron populations respectively. You know that the numbers Ne and N; are positive, and the membrane potentials Ve and Vi are negative. (a) Assume that V is a function of Ve. Find its derivative and interpret your answer.
