Abbreviation

BSTAM

Species

Rat

Description of part

The anterior medial (AM) subnucleus forms the most rostral extent of the BST (Fig. 1A). AM consists of a heterogeneous cell population which includes many small, darkly staining cells with little cytoplasm, and scattered larger, light- to medium- staining cells with coarse granular cytoplasm and prominent nucleoli (Fig. 3A). At midlevels of AM, a triangular cluster of small, darkly staining, oval-shaped neurons is present ventrally in AM just dorsal to the anterior commissure (Fig. 3B). While these neurons appear different from the heterogeneous bulk of AM cells, there is no connectional or immunohistochemical evidence at present to define them as a subnucleus (Krettek and Price, '78; Woodhams et al.,’83). At caudal levels, cells in AM are morphologically similar to those located rostrally but are more widely spaced due to the fibers of the postcommissural stria terminalis (Fig. 1B-D); these fibers largely separate AM from the more caudal posterior medial subnucleus.

Part type

gray matter

Nomenclature

Moga-Fulwiler-Saper

Endorsement

The approach used by the collator Mihail Bota is not endorsed by the author of the nomenclature.

Reference