Serotonin induces neuromodulation.
==== Receptors ====The 5-HT receptors, the receptors for serotonin, are located on the cell membrane of nerve cells and other cell types in animals, and mediate the effects of serotonin as the endogenous ligand and of a broad range of pharmaceutical and psychedelic drugs
 Normally serotonin is taken back into the presynaptic neuron to stop its action, then reused or broken down by monoamine oxidase

