Giraud et al. (2001)
From Psy3242
This Study was to test the recruitment of their visual cortex when hearing verbal cues in cochlear implant patients. These patients were tested at different times after they got their implants.
results
The visual cortex was activated in trained cochlear implant patients where in the control group it was not active. They also figured out that the visual field was active do to specific stimuli. (1) they do so more than control subjects, (2) activation increases the longer they use an implant, and(3) they do so in a progressively stimulus-specific way. [1]