negative regulation of excitatory postsynaptic potential
negative regulation of EPSP
related
negative regulation of excitatory post-synaptic membrane potential
exact
reduction of excitatory postsynaptic membrane potential
exact
Any process that prevents the establishment or decreases the extent of the excitatory postsynaptic potential (EPSP) which is a temporary increase in postsynaptic potential due to the flow of positively charged ions into the postsynaptic cell. The flow of ions that causes an EPSP is an excitatory postsynaptic current (EPSC) and makes it easier for the neuron to fire an action potential.
GO:0048519
negative regulation of biological process
is_a
GO:0098815
modulation of excitatory postsynaptic potential
is_a
GO:0060079
excitatory postsynaptic potential
negatively_regulates