Serotonin prevents neuromodulation.
 When stimulated by nerve impulses, serotonin is released as a neurotransmitter into the synapse, reversibly binding to the postsynaptic receptor to induce a nerve impulse on the postsynaptic neuron
 Serotonin can also bind to auto-receptors on the presynaptic neuron to regulate the synthesis and release of serotonin

