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The morphological development of human basal ganglia

ABSTRACT  Human embryos were studied to clarify controversies surrounding the developmental morphology of the basal ganglia and related structures. Eleven human embryos at Carnegie stages 12 through 21 were examined and reconstructed by the three‐dimensional computer graphics technique. Findings on the neural morphology and telencephalic arteries reveal that (1) all parts of the basal ganglia and the amygdala are telencephalic structures; (2) the medial part of globus pallidus, preoptic area and medial septal nucleus originate from the medial ganglionic eminence; (3) the olfactory bulb, prepiriform area, caudate head, caudate body, caudate tail, nucleus accumben septi, putamen, lateral part of globus pallidus and the amygdala originate from the lateral gangiionic eminence.