Horizontal cells

Horizontal cells are the neurons in the eye that integrate and regulate the input from multiple photoreceptor cells. They are crucial for the primary processing of visual input, contributing to the adaptation of the visual system to different light levels and enhancing the perception of contrast and color.

Function

Horizontal cells receive input from photoreceptor cells and project their processes laterally to contact many photoreceptors and bipolar cells. They are involved in the spatial integration of visual information and play a significant role in the adaptation of the visual system to different light levels. They also contribute to the enhancement of the perception of contrast and color.

Types

There are two types of horizontal cells: Type A and Type B. Type A cells have larger cell bodies and spread their dendrites and axons in the outer plexiform layer, while Type B cells have smaller cell bodies and their dendrites and axons are confined to the outer plexiform layer.

Role in Vision

Horizontal cells play a crucial role in the primary processing of visual input. They help in the adaptation of the visual system to different light levels and enhance the perception of contrast and color. They also contribute to the spatial integration of visual information.

See Also

• Photoreceptor cell
• Bipolar cell
• Plexiform layer
• Neuron

References

Horizontal cells Resources
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