A new study reveals that the brain’s ability to store information about familiar objects, such as their typical colors, depends on the connection between language and visual processing regions. Published on May 20th in PLOS Biology, the research was conducted by Bo Liu from Beijing Normal University, China, and colleagues.
The study focused on how the brain links visual perception and language to form object knowledge. For example, seeing a yellow banana and knowing that the word “banana” represents a yellow object both activate the ventral occipitotemporal cortex (VOTC). However, language regions like the dorsal anterior temporal lobe (ATL) also play a critical role; patients with ATL damage struggle with object color knowledge despite intact visual processing.
To investigate further, the researchers compared 33 stroke patients with 35 demographically matched controls. Using fMRI and diffusion imaging, they mapped the white matter connections between language and visual regions. The results showed that stronger connections between these areas correlated with better performance in object color tasks and more robust color representations in the VOTC. These findings were not explained by stroke lesions, color recognition, or early visual processing issues.
The authors emphasize that their work underscores the deep integration of language and vision in structuring knowledge. As they note, “Language isn’t just for communication—it fundamentally shapes how sensory experiences are neurally structured into knowledge.”
This research highlights the sophisticated interplay between language and perception in the human brain, offering new insights into how we encode and retrieve everyday object information. Future studies could explore how these connections develop or are affected in other neurological conditions.
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