How does your brain know what neurotransmitter to release?

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How does your brain know what neurotransmitter to release?

In: Biology

Certain areas of the brain primarily operate on one or two neurotransmitters. Each neuron can only release one type of neurotransmitter so you need a different neuron for each type of neurotransmitter used.

Pathways in the brain can be defined by the nuerotransmitters used in that area. For example, GABA and dopamine are critical neurotransmitters used in the basal ganglia which control your motor movement and planning. Dopamine is also involved in the reward pathway. Serotonin is used in the nerves of the GI tract mostly but also in pathways related to mood. Acetylcholine is mostly used in nerves in the peripheral nervous system or in pathways related to staying awake.

The most common neurotransmitter used in the brain itself is glutamate.