Excitatory post synaptic potential is
EPSP: Depolarisation of post synaptic membrane by opening of Na+ or Ca2+ channels
IPSP : Hyperpolarisation of post synaptic membrane by opening of Cl- or K+ channels
Depolarisation of post synaptic membrane by opening of K+ channels
Hyperpolarisation of post synaptic membrane by opening of Cl- channels
Depolarisation of post synaptic membrane by opening of Ca2+ channels
Hyperpolarisation of post synaptic membrane by opening of Na+ channel