Figure 4. Right occipito-temporal coupling predicts occipital cortex availability for audio-visual synergy after auditory rehabilitation.

(a) Surface rendering and plot of the negative correlation (in red) between individual strength of occipito-temporal coupling (current study: interaction term of PPI analysis between the right STS (seed region) and the right and left visual cortices (arrows)) and speech perception scores obtained 6 months after cochlear implantation (CI). The plot illustrates that the functional coupling between the left and right visual cortex and the right temporal cortex during deafness is a negative predictor of future CI proficiency. For illustration purposes, the extracted values from the coupling with the left occipital cortex only are displayed. Similar significant statistics were obtained for the right occipital cortex. (b) Surface rendering adapted from Strelnikov et al.⁶ showing that the absence of right occipito-temporal interaction during an audio-visual task in CI users 6 months after surgery is related to good speech perception scores (in blue).