regulates regulation of nervous system process modulation of chemical synaptic transmission regulation of molecular function postsynaptic neurotransmitter receptor activity regulation of postsynaptic neurotransmitter receptor activity GO:0098962 biological_process Any process that modulates the frequency, rate or extent of neurotransmitter receptor activity involved in synaptic transmission. Modulation may be via an effect on ligand affinity, or effector function such as ion selectivity or pore opening/closing in ionotropic receptors. regulation of neurotransmitter receptor activity