Sleep plays a vital role in good health and well-being throughout your life. Getting enough quality sleep at the right times can help protect your mental health, physical health, quality of life, and safety. The way you feel while you're awake depends in part on what happens while you're sleeping.
Receptors for the various neurotransmitters are located on both the presynaptic and postsynaptic nerve terminals of the neuron.
Location. Dopamine is a neurotransmitter that is primarily found in the brain. Serotonin is also a neurotransmitter, but 80 to 90 percent of serotonin is found in the gastrointestinal tract.opamine and serotonin are two neurotransmitters that are necessary for many aspects of human behavior. Inadequate production and regulation of either neurotransmitter is a cause of many medical conditions.