Horizontal cells of the avian retina

Gallego, Antonio; Baron, Margarita; Gayoso, Manuel J.

doi:10.1016/0042-6989(75)90247-3

Cited by 14 publications

(10 citation statements)

References 3 publications

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“…19,20 The specific role of these cell types' dendritic trees, both connecting to cones, 21,22 has remained an enigma. For primate HC's, it has been shown [23][24][25][26] that a weighting of connectivity exists with respect to the two major classes of cones.…”

Section: B S-cone Patterns and Connectivity To Interneuronsmentioning

confidence: 99%

Irregular S-cone mosaics in felid retinas Spatial interaction with axonless horizontal cells, revealed by cross correlation

et al. 2000

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In most mammals short-wavelength-sensitive (S) cones are arranged in irregular patterns with widely variable intercell distances. Consequently, mosaics of connected interneurons either may show some type of correlation to photoreceptor placement or may establish an independent lattice with compensatory dendritic organization. Since axonless horizontal cells (A-HC's) are supposed to direct all dendrites to overlying cones, we studied their spatial interaction with chromatic cone subclasses. In the cheetah, the bobcat, and the leopard, anti-S-opsin antibodies have consistently colabeled the A-HC's in addition to the S cones. We investigated the interaction between the two cell mosaics, using autocorrelation and cross-correlation procedures, including a Voronoi-based density probe. Comparisons with simulations of random mosaics show significantly lower densities of S cones above the cell bodies and primary dendrites of A-HC's. The pattern results in different longwavelength-sensitive-L-and S-cone ratios in the central versus the peripheral zones of A-HC dendritic fields. The existence of a related pattern at the synaptic level and its potential significance for color processing may be investigated in further studies.

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Section: B S-cone Patterns and Connectivity To Interneuronsmentioning

confidence: 99%

Irregular S-cone mosaics in felid retinas Spatial interaction with axonless horizontal cells, revealed by cross correlation

et al. 2000

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“…[14,32,39,45,58]). As regards teleost fishes, for example, horizontal cells consist of four subtypes [15,39,58] (Fig.…”

Section: Morphology Of Horizontal Cellsmentioning

confidence: 99%

The functional role of retinal horizontal cells.

Kaneko

1987

Jpn.J.Physiol

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“…These two cell types are clearly different in their morphological features and connectivities (Gallego, 1982). In fish, the two types of HCs have been also found.…”

Section: Introductionmentioning

confidence: 97%

“…The short axon HCs of the goldfish retina have been studied in detail by Stell (1967bStell ( , 1972Stell ( , 1975Stell ( , 1982. They present two main differences with the same type of cell in the tetrapoda retina (Gallego, 1982): the axons of goldfish HCs terminate with a large elongated structure located at the vitreal side of the HC layer, and do not establish contacts with photoreceptor cells; the somata establish wide membrane-to-membrane contacts (gap junctions) between them, as do the tetrapoda axonless HCs. One to three tangential layers of such axon bearing cells have been reported in several teleost retinas (Stell, 1967b;Naka and Carraway, 1975;Hashimoto et al, 1976;Stell et al, 1982;Teranishi et al, 1984;Sakai and Naka, 1986).…”

Section: Introductionmentioning

confidence: 98%