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Which neurotransmitter is used by inhibitory cells in the thalamic reticular nucleus?

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Diagram of a human brain showing a median sagittal section, highlighting the fourth ventricle and cerebellum in the hindbrain, with labeled anatomical structures including the pons, medulla oblongata, and central canal of the spinal cord. — thalamus Sagittal section of the human brain, showing structures of the cerebellum, brainstem, and cerebral ventricles.

The inhibitory cells located within the thalamic reticular nucleus utilize the neurotransmitter GABA.1