Why Your Words Change How You See The World: New Study Reveals Language Wires Brain Color Storage

I recently came across a study published May 20 in the open-access journal PLOS Biology. It is written by Bo Liu from Beijing Normal University in China and colleagues. It is a fascinating look at how our brains work. The big takeaway is that seeing a yellow banana and knowing the object represented by the word "banana" is usually yellow, both excite the ventral occipitotemporal cortex. This suggests that the words we use are tightly linked to how we see colors.

The researchers wanted to understand if communication between the brain's language and sensory association systems is necessary for representing information about objects. They looked at 33 stroke patients and 35 demographically-matched controls. Using fMRI and diffusion imaging, they mapped the white matter connections between language regions and the VOTC. They found that stronger connections between language and visual processing regions correlated with stronger object color representations in the VOTC. This supported better performance on object color knowledge tasks. Interestingly, these effects couldn't be explained by variations in patients' stroke lesions or problems with earlier stages of visual processing. It shows that the language system is doing heavy lifting.

The authors add that language isn't just for communication. It fundamentally shapes how sensory experiences are neurally structured into knowledge. This means that dementia patients with ATL damage might struggle with object color knowledge despite normal visual processing areas. It is a complex system where words and sight play a dance. It is a reminder that our ability to store information about familiar objects depends on this connection.