title: Neurochemically specified subsystems in the basal ganglia.
abstract: The fibre pathways associated with the basal ganglia include through-conduction lines and side-loops associated with the striatum, pallidum and substantia nigra. Each of these regions is now known to contain subdivisions differing from one another in the neurotransmitter-related compounds they contain. This paper includes an outline of these new findings and a commentary on some of their functional implications.
mesh_terms: D000109:Acetylcholine / Q000032:analysis; D000818:Animals; D001479:Basal Ganglia / Q000032:analysis* / Q000033:anatomy & histology; D001931:Brain Mapping; D002415:Cats; D002540:Cerebral Cortex / Q000033:anatomy & histology; D004298:Dopamine / Q000032:analysis; D004745:Enkephalins / Q000032:analysis; D005116:Extrapyramidal Tracts / Q000032:analysis*; D006801:Humans; D018377:Neurotransmitter Agents / Q000032:analysis*; D051381:Rats; D013378:Substantia Nigra / Q000032:analysis* / Q000033:anatomy & histology; D013787:Thalamic Nuclei / Q000033:anatomy & histology; D005680:gamma-Aminobutyric Acid / Q000032:analysis
chemical_list: D004745:Enkephalins; D018377:Neurotransmitter Agents; D005680:gamma-Aminobutyric Acid; D000109:Acetylcholine; D004298:Dopamine