Which of the following statements is true for excitatory postsynaptic potentials (EPSP)
EPSP is proportional to the amount of neurotransmitter released, so not an ‘all or none’ activity. 
It is not self-propagating, nor does it have any action on presynaptic terminal.
Are self propagating
Show all or none response
Are proportional to the amount of transmitter released by the presynaptic neuron
Are inhibitory at presynaptic terminal