The nucleus lateralis dorsalis thalami (LD) appears grossly as a caudal continuation of the nucleus anterior ventralis (AV),13,20 from which, however, it is separated by a thick lamina of myelinated fibers. LD is composed of medium-sized polygonal nerve cells which are remarkably similar to those found in AV (compare Olszewski's high power plates IXb and XXXV). The stratum zonale is markedly thinned over LD; most of the fibers plunge ventrally beneath the nucleus, forming a bed or capsule separating LD rostrally from AV, laterally from nucleus ventralis lateralis (VL), pars caudalis, and medially from nucleus centralis superior lateralis. At more caudal levels, LD merges laterally with the nucleus lateralis posterior (LP). The myelin stain offers the better opportunity for distinguishing LD from LP; LD is paler and lacks transversely disposed fiber bundles which are prominent in LP.20 In the human brain, fragments of LD (nuclei dorsales disseminati thalami)
LOCKE S, ANGEVINE JB, YAKOVLEV PI. Limbic Nuclei of Thalamus and Connections of Limbic Cortex: VI. Thalamocortical Projection of Lateral Dorsal Nucleus in Cat and Monkey. Arch Neurol. 1964;11(1):1–12. doi:10.1001/archneur.1964.00460190005001
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