> Neuromodulators are longer lasting, don't work through synapses (rather, the
> neuromodulators are squirted out around the axon into the intercellular
> fluid or go through cell membranes like nitric oxide and carbon monoxide),
> modulate the activity of neurons rather than inhibit or excite them.
How do they modulate the activity of the neuron for example? What
signal is needed that neuro modulators are secreted? An action