Post-synaptic potentials flow electrotonically with loss of current

Voltage change produced by synapses on the soma can be excitatory or inhibitory

Voltage change produced by synapses on dendrites have to reach a much lower trigger threshold for an AP

Voltage change produced by synapses on dendrites can be excitatory or inhibitory

Summation can only occur at the axon hillock so that a synapse closer to the hillock is more efficient