<prompt> Excitatory post synaptic potential isDepolarisation of post synaptic membrane by opening of K channelsHyperpolarisation of post synaptic membrane by opening of Cl- channelsDepolarisation of post synaptic membrane by opening of Ca2 channelsHyperpolarisation of post synaptic membrane by opening of Na channel  <response>: EPSP: Depolarisation of post synaptic membrane by opening of Na or Ca2 channelsIPSP : Hyperpolarisation of post synaptic membrane by opening of Cl- or K channels 