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BookmarkNeurotransmitters are chemicals that are used to relay, amplify and modulate electrical signals between a neuron and another cell.
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Substances that act as neurotransmitters can be roughly categorized into three major groups: (1) amino acids (primarily glutamic acid, GABA, aspartic acid & glycine), (2) peptides (vasopressin, somatostatin, neurotensin, etc.) and (3) monoamines (norepinephrine NA, dopamine DA & serotonin 5-HT) plus acetylcholine (ACh).
The major "workhorse" neurotransmitters of the brain are glutamic acid (=glutamate) and GABA..
For more information about the topic Neurotransmitter, read the full article at Wikipedia.org, or see the following related articles:
Motor neuron — In vertebrates, motor neurons (also called motoneurons) are efferent neurons that originate in the spinal cord and synapse with muscle fibers to ... > read more
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Serotonin — Serotonin (5-hydroxytryptamine, or 5-HT) is a monoamine neurotransmitter synthesised in serotonergic neurons in the central nervous system and ... > read more
Glutamic acid — Glutamate is a key molecule in cellular metabolism. In humans, dietary proteins are broken down by digestion into amino acids, which serves as ... > read moreNote: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Neurotransmitter at Wikipedia.org. See the Wikipedia copyright page for more details.
