Redefining the role of Broca's area in speech.

ABSTRACT: For over a century neuroscientists have debated the dynamics by which human cortical language networks allow words to be spoken. Although it is widely accepted that Broca's area in the left inferior frontal gyrus plays an important role in this process, it was not possible, until recently, to detail the timing of its recruitment relative to other language areas, nor how it interacts with these areas during word production. Using direct cortical surface recordings in neurosurgical patients, we studied the evolution of activity in cortical neuronal populations, as well as the Granger causal interactions between them. We found that, during the cued production of words, a temporal cascade of neural activity proceeds from sensory representations of words in temporal cortex to their correspondin

SUBMITTER: Flinker A 

PROVIDER: S-EPMC4352780 | biostudies-literature | 2015 Mar

REPOSITORIES: biostudies-literature