Table 2.
Summary of the structural and functional connectivity findings for each region of interest in relation to the other ROIs.
| ROI | Functional connectivity | Structural connectivity |
|---|---|---|
| MTG | STS/BA39 Anterior STG/BA22 BA47 BA46 |
STS/BA39 via the AF indirect, anterior STG/BA22 via the MdLF*, BA47 via the IOFF* |
| STS/BA39 | MTG Anterior STG/BA22 BA47 |
MTG via the AF indirect, anterior STG/BA22 via the MdLF^ |
| Anterior | MTG | MTG via the MdLF*, |
| STG/BA22 | STS/BA39 BA47 |
STS/BA39 via the MdLF^ |
| BA47 | MTG STS/BA39 Anterior STG/BA22 |
MTG via the IOFF* |
| BA46 | MTG |
*It must be noted that the fiber pathways implicated here cannot be confirmed with the streamline tractography technique currently utilized. While these fibers do pass through both regions of interest, they cannot be traced to their cortical terminations as these would intermix with the ascending fibers of the arcuate fasciculus that run close to the cortical surface in this region.
^Though MdLF fibers were not specifically seen to enter the STS/BA39 ROI, current knowledge of the anatomy of this tract is that it does traverse beneath the STG toward Brodmann's area 39, and thus would be the likely pathway to connect the Anterior BA22 ROI with the STS/BA39 ROI.