| GABA-IR neuron, BST | Sun and Cassell (SC) | Only GABA-IR neurons in the anterolateral BNST were adequately Golgi-impregnated (Figs. 9 and 10). These cells have round perikarya with moderate to densely spiny dendrites and closely resembled the medium-sized sipiny neurons described by McDonald ('83) and also identified here in the CeL (cf. cells N1 in Figs 7 and 9). Collator note: the anterolateral BNST of Sun and Cassell may correspond to BSTov, BSTal and BSTju, and possibly includes BSTad, of Swanson 1998. Compare Fig 3. A-D with Atlas Levels 18-20 of the Swanson 1998 rat atlas.
| synonym | | These cells [GABA-IR]...closely resembled the medium-sized spiny neurons described by McDonald ('83)... | Sun N. & Cassell M.D. | Mihail Bota |
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| common spiny neuron | Larriva-Sahd (Larriva-Sahd) | The CSN is the most frequent cell type (44%) and short axon neuron found in the Ov (Fig. 8). Neurons classified as CSN are a heterogeneous group of spiny interneurons scattered throughout the core and, occasionally, the shell of the nucleus. This
cell type bears strong similarities to the type described by MacDonald (1983) in “the lateral subdivision of the BST,” which clearly corresponds to the Ov reported by Ju and Swanson (1989). CSNs together with neurogliaform neurons (see below) are by and large the most important source of intrinsic axonal plexuses to the neuropil of the Ov. CSNs share the following somatodendritic characteristics: 1) somata are ovoid or star shaped, measuring 16 micrometers in their longest axis; 2) primary dendrites have two or three short branches (10–40 micrometers) that run divergently; 3) dendrites exhibit distinct varicosities; and 4) second- and third-order dendrites are covered by a moderate number of spines. The CSN axon arises from the soma or, more commonly, from the base of a primary dendrite. A signal feature of the axon is that it undergoes successive, dichotomous ramifications, which outline square areas of neuropil harboring stained somata, dendrites (Table 2), and unstained somata. It should be emphasized that CSNs exhibit varying degrees of somatodendritic complexity from bipolar to double bouquet or stellate cells (see Peters and Jones, 1984); however, their clear-cut dendritic features coupled with the pattern of axonal branching are the most constant and defining criteria. | synonym | | This cell type bears strong similarities to the type described by McDonald (1983) in the "lateral subdivision of the BST", which clearly corresponds to the Ov reported by Ju and Swanson (1989). | Larriva-Sahd J. | Mihail Bota |
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