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The present series of cytoarchitectural plates is intended as a guide to the topographical relationships of the various thalamic nuclei to the commissuralmidline system. Although reproduced at relatively low power, some idea of the cytoarchitecture of the individual nuclei may be gained by careful inspection of the plates with the aid of a hand magnifier.

The following 54 cases are presented as montages of drawings including every 100th section through the hemisphere and every 40th section through the thalamus. The nomenclature and methods have been presented and discussed in Chapters 1 and 2. Using the abbreviations of this nomenclature, a summary of the areas of destruction and degeneration is presented at the start of each anatomical description. The conventions used on the drawings to indicate gliosis, neuron change, and demyelination are shown in Fig. 98. Black indicates total destruction of tissue.

The variations of the gross diencephalic and midbrain structures have been prepared using 25 hemispheres for each plane according to the methods given in detail in Chapter 2, Part III of Volume I.