The phrase "essential neurotransmitter" refers to a substance in our brain that plays a crucial role in transmitting messages between our nerve cells. It is necessary for proper functioning of our brain and nervous system. Full definition
It is caused by the loss of brain cells (neurons) that produce dopamine, an essential neurotransmitter that allows neurons to «talk» to each other. (sciencedaily.com)
Researchers are learning whether normal neuron behavior depends on the ability to produce an essential neurotransmitter. (hhmi.org)
[3] When L - dopa crosses the blood - brain barrier, it helps to increase brain levels of dopamine, an essential neurotransmitter associated with regulating mood and cognition. (globalhealingcenter.com)