| Cell type (class) | Nomenclature (Acronym) |
Definition | Relation of BNSTALG Type I neuron |
| Annotation | Reference |
Collator |
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| BNSTAL-5HT neuron | Hammack et al. (Hammack) | In agreement with McDonald (1983), neurons of the BNSTAL had a characteristic oval soma (approximately 22 X 15 micrometers) from which emanated two to four primary spine-sparse dendrites. The length of the primary dendrites ranged from 126
to 50 micrometers. Unfortunately, full morphometric reconstruction on several of the recovered cells was not possible due to the loss of some of the dendritic arbor during tissue processing. Collator note: the distribution of these neurons are shown in a single figure (Fig.1 page 586). It was assumed that BNSTAL of Levita et al. may correspond with the rostral levels of BSTal and BSTad of Swanson-1998 (Atlas Levels 16-17). It is possible that BSTov is also included in the BNSTAL of Levita et al., but no indication of this was found in the text. | partial correspondence | | Collator note: see Figure 8 page 1796. Each physiological type BNSTALG is related to several types of the electro-chemical 5HT types. | Guo J.-D., Hammack S.E., Hazra R., Levita L.& Rainnie D.G. | Mihail Bota |
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| BNSTAL-5HT (HYP) neuron | Hammack et al. (Hammack) | Collator note: neuron type defined on the physiological response when serotonin is applied in BNSTALG tissue.5-HT(Hyp) always has a hyper-polarization response. The distribution of this neuron type (population) is assumed to be within the boundaries of BNSTAL as defined in Levita et al. 2004. | partial correspondence | | Collator note: see Figure 8 page 1796. Each physiological type BNSTALG is related to several types of the electro-chemical 5HT types. | Guo J.-D., Hammack S.E., Hazra R., Levita L.& Rainnie D.G. | Mihail Bota |
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| BNSTAL-5HT (HYP-DEP) neuron | Hammack et al. (Hammack) | Collator note: neuron type defined on the physiological response when serotonin is applied in BNSTALG tissue.5-HT(Hyp-Dep) has two components, that is, a membrane hyperpolarization immediately followed by a depolarization deflection. The distribution of this neuron type (population) is assumed to be within the boundaries of BNSTAL as defined in Levita et al. 2004. | partial correspondence | | Collator note: see Figure 8 page 1796. Each physiological type BNSTALG is related to several types of the electro-chemical 5HT types. | Guo J.-D., Hammack S.E., Hazra R., Levita L.& Rainnie D.G. | Mihail Bota |
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| BNSTAL-5HT(DEP) neuron | Hammack et al. (Hammack) | Collator note: neuron type defined on the physiological response when serotonin is applied in BNSTALG tissue.5-HT(Dep) always has a depolarization response. The distribution of this neuron type (population) is assumed to be within the boundaries of BNSTAL as defined in Levita et al. 2004. | partial correspondence | | Collator note: see Figure 8 page 1796. Each physiological type BNSTALG is related to several types of the electro-chemical 5HT types. | Guo J.-D., Hammack S.E., Hazra R., Levita L.& Rainnie D.G. | Mihail Bota |
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| superficial spiny neuron | Larriva-Sahd (Larriva-Sahd) | The lateral part of the shell of the Ov contains a distinct layer of spiny neurons (Fig. 7A). Somata of SSNs are ovoid or triangular, measuring 18–25 micrometers in the longest axis. Primary dendrites have two or three short branches that run divergently.
Within 10–40 micrometers, primary branches ramify, supplying long (i.e., secondary) dendrites that, in turn, provide occasional short terminal dendrites. Secondary and tertiary dendrites display varicosities and are covered by numerous spines. Frequently, terminal dendrites ascending dorsally terminate as a series of two to four spherical or elliptical swellings measuring 2–5 micrometers wide, united by narrow dendritic bridges, similar to those described by Sotelo and Palay (1968) in neurons from the lateral vestibular nucleus. The lenticular dendritic fields of SSN lie in the lateral part of the shell of the Ov. Hence, SSNs are best depicted from sagittal sections through the lateral part of the Ov (Fig. 7A). The axon of the SSN originates from the soma or at the base of a primary dendrite, without modifying its contour. Characteristically, the axon follows an undulating trajectory, providing short collaterals to the neuropil adjacent to the neuron’s own dendritic field. The main synaptic targets of SNN appear to be spiny
projection neurons (Table 2), adjacent interneurons, and distal dendritic processes of neurons lying in the core of the Ov. | partially corresponds | | Collator note: this relation is inferred by the collator on the basis of morphology of both neurons populations (soma size, shape and pattern of dendritic arborizations), and location in the same nucleus. The superficial spiny neurons may be one the of several classes that express 5HTA1 receptors in BST. See Larriva-Sahd, 2006 for a detailed cytological description. | Marvin E., Scrogin K. & Dudas B. | Mihail Bota |
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| spiny neuron with chandelier-like axon | Larriva-Sahd (Larriva-Sahd) | This cell type, usually found throughout the core of the Ov, is separately classified from other spiny neurons for its oval or triangular soma and, above all, ubiquitous axonal features (Fig. 9). The soma measures from 17 to 22 micrometers in the longest axis, and it gives rise to two or three thick primary dendrites devoid of spines. Primary dendrites are relatively short (20–70 micrometers), providing long secondary (120–200 micrometers) and occasionally tertiary, terminal dendrites. An abundance of dendritic spines is a prominent feature of secondary and tertiary dendrites. The dendritic field is roughly ovoid; it measures 150–300 micrometers and remains within the confines of the core. The axon stems from the soma or from the root of a primary dendrite, following an arched trajectory for 100–300 micrometers. Then, the axon gives rise to two to six long collaterals, which display small varicosities. A unique feature of SCA axons is the presence of short, straight collaterals issuing transverse drumstick terminals. These collaterals consist of rows of large, rounded swellings connected by very thin (0.2 micrometers) axoplasmic bridges, i.e., candles (Fig. 9). | partially corresponds | | Collator note: this relation is inferred by the collator on the basis of morphology of both neurons populations (soma size, and possibly shape), and location in the same nucleus. The spiny neurons with the chandelier-like axons may be one the of several classes that express 5HTA1 receptors in BST. See Larriva-Sahd, 2006 for a detailed cytological description. | Marvin E., Scrogin K. & Dudas B. | Mihail Bota |
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