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Introduction

The views expressed in the literature on the cortical projection fields of the anterior nuclei, midline nuclei, and lateral dorsal nucleus of the thalamus are vague and often contradictory. LeGros Clark and Boggon⁵were apparently the first to point out that the anterior thalamic nuclei in the cat project to the whole length of cingulate gyrus. Walker²⁶suggested that the anterior medial nucleus in the monkey projects to the inferior surface of the frontal lobe. Later he was inclined to the view that the anterior group of nuclei projects mainly to the posterior part of the cingulate gyrus and that the anterior part of the gyrus (area 24-LA in terminology used by us) "receives few if any fibers from the thalamus."²⁷Bailey and co-workers,¹using the neuronographic method of strychnine-evoked potentials also came to the conclusion that the anterior cingulate gyrus is athalamic. However, Mettler

D. Y. KOSKOFF

Publications