Optic radiation

Optic Radiation

The Optic Radiation (also known as the Geniculocalcarine Tract or Tractus Opticus) is a component of the visual system in the brain. It carries visual information from the Lateral Geniculate Nucleus (LGN) to the primary visual cortex, also known as Brodmann area 17 or V1.

Anatomy

The optic radiation is a collection of axons that originate in the neurons of the LGN and terminate in the primary visual cortex. It is divided into two main parts: the upper and lower divisions. The upper division carries information about the lower visual field, while the lower division carries information about the upper visual field.

Function

The optic radiation plays a crucial role in the visual pathway. It transmits visual information from the LGN to the primary visual cortex, where it is processed and interpreted. This information includes details about color, shape, and movement.

Clinical Significance

Damage to the optic radiation can result in a variety of visual field defects, including homonymous hemianopsia, quadrantanopia, and scotoma. These conditions can significantly impact a person's ability to see and navigate their environment.

See Also

• Visual System
• Visual Cortex
• Visual Field
• Visual Pathway

References

Optic radiation Resources
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