EVIDENCE FOR THE ROLE OF INPUT ON THE DEVELOPMENT OF BRAIN PATHWAYS: An Example in Humans (continued)
Using measures of both fMRI and brain electrical activity to determine which areas are active during different tasks, it has been found congenitally deaf adults show activation over auditory cortex when presented with visual input.
Findings are very much like the “ferret” studies. With no competition for auditory cortex from cochlear inputs, the pathway from visual cortex to auditory cortex is preserved.
Auditory cortex is used to process visual information.