in taxon regulates (processual) regulates regulation of signaling receptor activity neurotransmitter receptor activity biological regulation regulation of neurotransmitter receptor activity GO:0099601 Any process that modulates the frequency, rate or extent of neurotransmitter receptor activity. Modulation may be via an effect on ligand affinity, or effector function such as ion selectivity or pore opening/closing in ionotropic receptors. Metazoa