The human brain stores and organizes meaningful information in different regions and networks. While past neuroscience studies have examined some of these networks in great depth, the relationship and interactions between them is not yet entirely clear.
Researchers at the University of California, Berkeley have recently carried out a study examining the relationship between visual and linguistic semantic representations in the brain. Their findings, published in Nature Neuroscience, suggest that visual and linguistic semantic information is organized as a unified map in the brain, with the two representations meeting along the boundary of the visual cortex. "One important subsystem within the human brain is the amodal semantic network, which represents the contents of current working memory and attention," Jack L. Gallant, one of the researchers who carried out the study, told Medical Xpress. "The semantic network serves as an interface between information streaming in from perceptual systems and knowledge stored in long-term memory. The goal of our study was to better understand the way that perceptual information enters the amodal semantic network." Gallant and his colleagues carried out two different experiments involving the same group of participants. In the first experiments, the participants were asked to watch silent movies, while in the second they listened to verbally narrated stories. Read more...
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