Enormous Optic Lobes Process Visual Signals in Colossal Squid Brains

A significant portion of the colossal squid's brain is devoted to processing visual information.

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Cephalopods are considered among the most neurologically complex invertebrates on Earth.

Like other cephalopods, Mesonychoteuthis hamiltoni possesses large optic lobes relative to overall brain size, reflecting the importance of visual processing in deep, dark habitats.

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Enhanced neural investment in vision complements the squid's massive eyes, allowing rapid interpretation of faint bioluminescent cues in the bathypelagic zone.

This neurological specialization demonstrates how sensory demands in extreme environments can shape brain architecture in marine invertebrates.

Source

Journal of Comparative Neurology

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