New research from the CSLB in The Journal of Neuroscience shows the dynamic transformations of sound to meaning when we hear speech. Our research reveals the real-time neural dynamics of phonological and semantic competition processes as speech is heard, and the representation of semantic information once the word becomes uniquely identified (the uniqueness point: UP).
We found early transient effects 400 ms before the UP of lexical competition in left supramarginal gyrus, left superior temporal gyrus, left middle temporal gyrus (MTG), and left inferior frontal gyrus (IFG) and of semantic competition in MTG, left angular gyrus, and IFG. After the UP, there were no competitive effects, only target-specific semantic effects in angular gyrus and MTG. Read more here: http://www.jneurosci.org/content/37/5/1312