What is the visual processing pathway from the retina to the cortex?

What is the visual processing pathway from the retina to the cortex?

• A. Retina → Superior colliculus → V4.
• B. Retina → LGN → Hippocampus.
• C. Retina → LGN (thalamus) → V1 (primary visual cortex) → Higher visual areas.
• D. Retina → Optic nerve to occipital pole.

Answer: (C)

The path that underpins conscious visual perception starts with the retina sending signals to the lateral geniculate nucleus of the thalamus, which acts as the main relay for visual information. From there, the signal goes to the primary visual cortex in the occipital lobe (V1), where initial processing of basic features like edges and orientation occurs. After V1, the information fan-outs to higher visual areas (V2, V3, V4, MT, and beyond) for more complex processing such as color, form, motion, and object recognition. While there is another subcortical route via the superior colliculus that supports orienting and attention, the standard sequence for processing visual input into cortex is retina → LGN → V1 → higher visual areas.

The path that underpins conscious visual perception starts with the retina sending signals to the lateral geniculate nucleus of the thalamus, which acts as the main relay for visual information. From there, the signal goes to the primary visual cortex in the occipital lobe (V1), where initial processing of basic features like edges and orientation occurs. After V1, the information fan-outs to higher visual areas (V2, V3, V4, MT, and beyond) for more complex processing such as color, form, motion, and object recognition. While there is another subcortical route via the superior colliculus that supports orienting and attention, the standard sequence for processing visual input into cortex is retina → LGN → V1 → higher visual areas.