From the earliest developmental and comparative studies, it has been customary to divide the thalamus into three parts: epithalamus, dorsal thalamus, and ventral thalamus (Droogleever-Fortuyn, 1912; Herrick, 1918; Le Gros Clark, 1932a) (Fig. 3.1). Though these subdivisions were based in the first instance on the derivatives of three of the cellular masses of the developing diencephalic wall (see Chapter 6), coupled with a certain amount of phylogenetic speculation, as the years have passed, the tripartite division has been given an increasingly strong connectional basis.
KeywordsPeroxi Dopamine Shrinkage Retina Cholin
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