Localization of Significant Differences Between 3 Groups Listening to Voice Compared with Nonvoice Sounds
| Normal hearing vs. implanted POOR | Voxel | Cluster | ||||||
|---|---|---|---|---|---|---|---|---|
| Area | x | y | z | Size | Z | t | P corrected | P corrected |
| MTG (BA21) | −66 | −32 | −6 | 61 | 3.75 | 3.83 | 0.552 | 0.696 |
| STS posterior (BA21) | 62 | −30 | 0 | 70 | 3.58 | 3.65 | 0.747 | 0.643 |
| STS anterior (BA21) | 66 | −8 | −6 | 89 | 3.67 | 3.74 | 0.652 | 0.539 |
| Implanted GOOD vs. implanted POOR | Voxel | Cluster | ||||||
| Area | x | y | z | Size | Z | t | P corrected | P corrected |
| STG (BA38) | 48 | 20 | −26 | 40 | 3 | 3.68 | 0.721 | NS |
Coordinates (in standard stereotactic space (28)) of voxels corresponding to local maxima of Z value, above Z = 4.75 (P < 0.001) within each focus of activation: x = distance (mm) to right (+) or left (−) of midsagittal line; y = distance anterior (+) or posterior (−) to vertical plane through anterior commissure; z = distance above (+) or below (−) intercommissural (AC–PC) line; STG = superior temporal gyrus; STS = superior temporal sulcus; MTG = middle temporal gyrus; NS = not significant.
Approximate Brodmann numbers (BA) associated with anatomic regions are given in parentheses. Size refers to number of voxels in a given cluster (voxel size in mm, 2 × 2 × 2), for statistical parametric mapping SPM (Z) map thresholds at T = 3.13 (P < 0.001, uncorrected) and then corrected for multiple comparisons (P < 0.05). No different clusters were observed between the normal hearing and implanted GOOD groups.