Which Presynaptic Activity Would Be the Most Effective in Producing

Multiple Choice

Which presynaptic activity would be the most effective in producing the greatest increase in firing rate of a postsynaptic neuron?

A) Activity that hyperpolarizes some dendrites and depolarizes others
B) Activity that always opens Cl^- channels
C) Excitatory activity that is repeated frequently and occurs at many locations in the dendrites of the postsynaptic cell
D) Activity that lowers the resting membrane potential
E) Activity that increases neurotransmitter synthesis