Asymmetry indexes (AI) for insula and anterior and posterior lobules
| Region | AI group mean (SD) | Between-groups p value (F(2,63)) | Significant differences (Bonferroni p value) | ||
|---|---|---|---|---|---|
| Hearing (H) | Deaf | Hearing signers (HS) | |||
| Insula GM | −0.001 (0.035) | 0.052 (0.042)* | 0.033 (0.042)* | <0.001 (11.412) | Deaf >H (<0.001) |
| HS > H (0.026) | |||||
| Anterior lobule GM | 0.028 (0.085) | 0.044 (0.062)* | 0.065 (0.062)* | ns | na |
| Posterior lobule GM | −0.058 (0.134)† | 0.067 (0.108)* | −0.030 (0.092) | 0.001 (7.901) | Deaf > H (0.001) |
| Deaf > HS (0.032) | |||||
| Insula WM | −0.679 (0.204)* | −0.832 (0.157)* | −0.730 (0.310)* | 0.052 (3.107) | Deaf < H (0.050) |
| Anterior lobule WM | −0.542 (0.210)* | −0.738 (0.180)* | −0.634 (0.321)* | 0.015 (4.494) | Deaf < H (0.012) |
| Posterior lobule WM | −0.962 (0.306)* | −0.987 (0.240)* | −0.915 (0.377)* | ns | na |