part of part of overlaps overlaps Homo sapiens cerebral subcortex midbrain telencephalon aggregate regional part of brain collection of basal ganglia BM:Tel-BG FMA:84013 NCIT:C12447 MA:0000184 All nuclei of the mammalian basal ganglia are also present in the oldest vertebrates.[well established][VHOG] Wikipedia:Basal_ganglia subcortical nuclei neuronames:2677 cerebral nuclei HBA:4276 PBA:4001 VHOG:0001696 EMAPA:32673 BAMS:BG UMLS:C0004781 it is necessary to introduce two classes, one representing an individual basal ganglion, another representing the aggregate structure, in order to have consistent classification amongst AOs (e.g. in MA the aygdala is part of the BG, in FMA and BTO it is a subclass). Apart from achieving this consistency, the value of having two distinct classes is questionable, since the BG-plural is trivially the collection of all BGs-singular. it would be better for all AOs to decide on one single way of doing this. Do not merge until this is done. MESH:D001479 GAID:617 basal nuclei (basal ganglia) basal ganglia BIRNLEX:826 Subcortical masses of gray matter in the forebrain and midbrain that are richly interconnected and so viewed as a functional system. The nuclei usually included are the caudate nucleus (caudoputamen in rodents), putamen, globus pallidus, substantia nigra (pars compacta and pars reticulata) and the subthalamic nucleus. Some also include the nucleus accumbens and ventral pallidum. basal ganglia set UBERON:0010011 MBA:623 set of basal nuclei basal nuclei set of basal ganglia