Abbreviation

BST4

Species

Rat

Description of part

BST4 occupies the caudal one-third of the RST and lies behind BST1 and BST5 (T6-T7, Sl-S3, H4-H6). It is a vertically oriented mass of cells. Dorsally it is separated from the ventricular lining by a small molecular zone; ventrally it merges with the AHA. BST4 can be divided into a medial and a lateral cellular column (not indicated in the tracings). The medial column consists of small to medium-sized, rather darkly staining and densely packed neurons. In the ventral part of this column the neurons are arranged in vertical arrays. The column is separated from the stria medullaris and the fornix by a small, cell-sparse zone containing some BST4-like neurons and, moreover, a few medium to large-sized, darkly staining neurons. Dorsomedially the BAC protrudes into BST4. The lateral column of BST4 is less densely crowded with cell bodies than the medial column and contains preponderantly medium-sized neurons intermingled with some larger neurons. The medium-sized to large neurons positioned lateral to the lateral column, which have been included by de Olrnos et al. ('85) in their posterior group of the medial division of the BST, were identified in this report as a part of BST5 (T6). The ventrocaudal portion of the BST4 corresponds with the so-called preoptic continuation of the BST as previously described by Gurdjian ('27) and McDonald ('83).

Part type

gray matter

Nomenclature

Geeraedts

Endorsement

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

Reference

Bed nucleus of the stria terminalis subarea 1 - Rat - Geeraedts
Bed nucleus of the stria terminalis subarea 2 - Rat - Geeraedts
Bed nucleus of the stria terminalis subarea 3 - Rat - Geeraedts
Bed nucleus of the stria terminalis subarea 5 - Rat - Geeraedts
Bed nucleus of the stria terminalis subarea 6 - Rat - Geeraedts
Bed nucleus of the stria terminalis subarea 7 - Rat - Geeraedts