We found no clear evidence that bilateral ILOTC represented the conceptual association in either the shape or the conceptual tasks—only the conceptual effect in the left ILOTC in the conceptual task was marginally significant (t(47) = 2.123, p = 0.039).
The interaction effect showed a weak trend that the shape task was slightly more difficult than the conceptual task for the EB than the SC ([(EB > SC) × (shape > conceptual tasks)]; z = 1.588, p = 0.112), which might be due to a lack of visual experience.
The analysis revealed a significant task effect (F(1,30) = 73.055; p < 0.001), whereas the group effect was found insignificant (F(1,30) = 0.732, p = 0.399), and the interaction effect between groups and tasks had only a slight trend toward significance (F(1,30) = 2.552, p = 0.123).