A-type horizontal cells of the superior edge of the linear visual streak of the rabbit retina have oriented, elongated dendritic trees.
The horizontal cells of the rabbit retina have been studied by light microscopy of Golgi-impregnated whole-mount retinas. The two types of horizontal cell of the rabbit retina are similar to the horizontal cells of the cat retina in most respects. However, the majority of the A-type horizontal cells of the rabbit have asymmetrical dendritic fields compared to the circular, symmetrical dendritic fields of this cell type in the cat. The A-type horizontal cells of the superior edge of the linear visual streak in the rabbit retina are the most strikingly asymmetric and most of them are elongated and oriented in a direction approximately parallel to the linear visual streak. Like H1 axon terminals of the turtle retina the oriented, elongated A-type horizontal cells of the rabbit visual streak region may play a role in the neurocircuitry which underlies orientation sensitive ganglion cells.
D000818:Animals; D001369:Axons; D001699:Biometry; D003712:Dendrites; D009474:Neurons / Q000166:cytology*; D011817:Rabbits; D012160:Retina / Q000166:cytology*; D012399:Rotation