| Cell type (class) | Nomenclature (Acronym) |
Definition | Relation of retinal ganglion cell Class I |
| Annotation | Reference |
Collator |
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| retinal ganglion cell type I | Perry (Perry) | Type I cells have the largest cell bodies of all the classes (see table 1). The primary dendrites are generally smooth in appearance but sometimes have dendritic spines, and roughly halve their diameter at the first bifurcation (see plates 1, figures 1 and 2). The cells have 3 to 6 primary dendrites which enter the inner plexiform layer diagonally and appear to terminate in the outer part of inner plexiform layer. On many of these cells an axon could be identified and the axons were in general the thickest observed. | synonym | | ...HRP-labelled Class I cells, like Type I cells identified by Perry [1979] in Golgi-wholemounts of rat retina... | Dreher B., Sefton A.J., Ni S.Y.K, Nisbett G. | Mihail Bota |
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| retinal ganglion cell "loose" type | Brown-morphological (B-morpho) | In Fig. 3, cells A, C, E, and G are of the “tight” type, while B, D, and F are of the “loose” type. The dendritic trees of the loose type do not penetrate the internal plexiform layer as deeply as those of the tight type (Table 1 and Fig. 4). The loose-type
cells have fewer dendritic branches per main branch than the tight type (Table 1). the dendrites ramify (the “dendritic field”) may extend as much as 600-700 micrometers in the flat-mounted retina. The main dendrites of the loose type do not penetrate into the plexiform layer as steeply as do those of the tight type. The average size of dendritic field (Table 1) is 397 micrometers for loose-type cells and 282 micrometers for tight-type cells. | different | | Although Perry considered that his Type I ganglion cells could be equated with the 'loose' cells distinguished by Brown [1965] in methylene-blue stained retinal wholemontsm we feel that our Class I cells do not correspond with either of Brown's 'loose' or 'tight' classes. | Dreher B., Sefton A.J., Ni S.Y.K, Nisbett G. | Mihail Bota |
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| retinal ganglion cell "tight" type | Brown-morphological (B-morpho) | In Fig. 3, cells A, C, E, and G are of the “tight” type, while B, D, and F are of the “loose” type. The average size of dendritic field (Table 1) is 397 micrometers for loose-type cells and 282 micrometers for tight-type cells. | different | | Although Perry considered that his Type I ganglion cells could be equated with the 'loose' cells distinguished by Brown [1965] in methylene-blue stained retinal wholemontsm we feel that our Class I cells do not correspond with either of Brown's 'loose' or 'tight' classes. | Dreher B., Sefton A.J., Ni S.Y.K, Nisbett G. | Mihail Bota |
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| diffuse ganglion cell | Bunt (Bunt) | The diffuse ganglion cells (i.e., those whose dendrites did not show stratification, but rather ramified at all levels of the inner plexiform layer) were the most frequently impregnated in this study. The cells were characterized by somata 12-21 micrometers in
diameter and one or several relatively thin apical dendrites which branched and ramified throughout the inner plexiform layer. The branches had a very delicate, often beaded appearance, with occasional spines. Some had relatively small, circumscribed
dendritic fields (84-132 micrometers) (Fig. 1) and others had more complexly branched, wider fields extending from 160 to 360 micrometers in diameter (Figs. 2-4). | partial correspondence | | ...although the giant ganglion cells described by Bunt [1976] in Golgi-stained retinal sections of albino rat clearly correspond with some of our Class I cells, some of our Class I cells probably correspond to some of Bunt's unistratified and diffuse cells. | Dreher B., Sefton A.J., Ni S.Y.K, Nisbett G. | Mihail Bota |
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| unistratified ganglion cell | Bunt (Bunt) | A class of relatively large ganglion cells (soma diameter 17-22 micrometers) was characterized by several relatively thick apical dendrites whose branches were smooth in appearance, with only occasional knobs and spines, and appeared to ramify in two planes, in the outer one-third and middle one-third of the inner plexiform layer, with a gap in between (Fig. 10). The dendritic fields varied from 132 to 220 micrometers in diameter. | partial correspondence | | ...although the giant ganglion cells described by Bunt [1976] in Golgi-stained retinal sections of albino rat clearly correspond with some of our Class I cells, some of our Class I cells probably correspond to some of Bunt's unistratified and diffuse cells. | Dreher B., Sefton A.J., Ni S.Y.K, Nisbett G. | Mihail Bota |
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| giant ganglion cell | Bunt (Bunt) | Several examples have been found of giant cells similar to those described by Polyak in the primate retina as having large somata (20 micrometers or greater) and relatively thick dendritic branches which were smooth and spine-free, radiating outward from
the soma to extend throughout the inner plexiform layer. The diameter of the dendritic spread reached 260 micrometers. | partial correspondence | | ...although the giant ganglion cells described by Bunt [1976] in Golgi-stained retinal sections of albino rat clearly correspond with some of our Class I cells, some of our Class I cells probably correspond to some of Bunt's unistratified and diffuse cells. | Dreher B., Sefton A.J., Ni S.Y.K, Nisbett G. | Mihail Bota |
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| retinal ganglion cell A2 inner | Huxlin and Goodchild (HG) | Alpha ganglion cells, which were defined by Peichl (1989), were identified and termed RGA2 in the present study (see Table 1). The RGA2 cell has a large soma from which a thick axon emerges. Four to eight stout primary dendrites project radially from the cell body and branch repeatedly in a Y-shaped pattern. The dendrites branch at regular intervals, with the first branch point being within half of a soma diameter of the cell body. This branching pattern gives the appearance of a relatively uniform, medium density of dendrites across the dendritic arbor. The cell body is usually situated at the centre of the dendritic field. They stratify at ... 72 ± 15% of the IPL (inner)... | includes | | Neurons originally known as Type 1 RGCs, subsequently called Class I and then ‘‘alpha cells’’ (Perry, 1979; Dreher et al., 1985; Reese and Cowey, 1986; Schall et al., 1987; Peichl, 1989; Tauchi et al., 1992), whose dendrites monostratify in the inner or the outer parts of the IPL, were grouped as inner and outer RGA2 cells. | Huxlin K.R & Goodchild A.K. | Mihail Bota |
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| retinal ganglion cell A2 outer | Huxlin and Goodchild (HG) | Alpha ganglion cells, which were defined by Peichl (1989), were identified and termed RGA2 in the present study (see Table 1). The RGA2 cell has a large soma from which a thick axon emerges. Four to eight stout primary dendrites project radially from the cell body and branch repeatedly in a Y-shaped pattern. The dendrites branch at regular intervals, with the first branch point being within half of a soma diameter of the cell body. This branching pattern gives the appearance of a relatively uniform, medium density of dendrites across the dendritic arbor. The cell body is usually situated at the centre of the dendritic field. They stratify at ... 34 ± 10% of the IPL (outer)... | includes | | Neurons originally known as Type 1 RGCs, subsequently called Class I and then ‘‘alpha cells’’ (Perry, 1979; Dreher et al., 1985; Reese and Cowey, 1986; Schall et al., 1987; Peichl, 1989; Tauchi et al., 1992), whose dendrites monostratify in the inner or the outer parts of the IPL, were grouped as inner and outer RGA2 cells. | Huxlin K.R & Goodchild A.K. | Mihail Bota |
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| retinal ganglion cell A2 | Huxlin and Goodchild (HG) | Alpha ganglion cells, which were defined by Peichl (1989), were identified and termed RGA2 in the present study (see Table 1). The RGA2 cell has a large soma from which a thick axon emerges. Four to eight stout primary dendrites project radially from the cell body and branch repeatedly in a Y-shaped pattern. The dendrites branch at regular intervals, with the first branch point being within half of a soma diameter of the cell body. This branching pattern gives the appearance of a relatively uniform, medium density of dendrites across the dendritic arbor. The cell body is usually situated at the centre of the dendritic field. They stratify at ... 72 ± 15% of the IPL (inner) or 34 &plusmin; 10% of the IPL (outer). | synonim | | Neurons originally known as Type 1 RGCs, subsequently called Class I and then ‘‘alpha cells’’ (Perry, 1979; Dreher et al., 1985; Reese and Cowey, 1986; Schall et al., 1987; Peichl, 1989; Tauchi et al., 1992), whose dendrites monostratify in the inner or the outer parts of the IPL, were grouped as inner and outer RGA2 cells. | Huxlin K.R & Goodchild A.K. | Mihail Bota |
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| large ganglion cell | Reese and Cowey (RC) | The present study considered the possibility that one particular and relatively rare retinal ganglion cell type may have its peak density on or near the representation of the vertical midline and may display a laterality of projection delineated by that midline representation. ...We consider the variability in Type I cell morphology as a means for exclusively classing every large retinal ganglion cell in the rat. For these reasons, we counted all retrogradely labelled ganglion cells with a soma size greater than 18 micrometers as an approximation to the population of Type I retinal ganglion cells. | synonim | | Neurons originally known as Type 1 RGCs, subsequently called Class I and then ‘‘alpha cells’’ (Perry, 1979; Dreher et al., 1985; Reese and Cowey, 1986; Schall et al., 1987; Peichl, 1989; Tauchi et al., 1992), whose dendrites monostratify in the inner or the outer parts of the IPL, were grouped as inner and outer RGA2 cells. | Huxlin K.R & Goodchild A.K. | Mihail Bota |
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