Table 3. Average Distances from Talairach Coordinates to Converted MNI Coordinates.
Euclidean distances from the converted coordinates to the Talairach coordinates were computed and averaged for all four contrasts. Overall, use of the Lancaster transform (icbm2tal) best reduced the disparity between Talairach and MNI coordinates.
No Transform (MNI Coordinates) | Brett Transform (mni2tal) | Lancaster Transform (icbm2tal) | |
---|---|---|---|
Learn > Distract | 7.324 | 9.598 | 5.465 |
Recall > Distract | 6.743 | 6.707 | 4.402 |
Learn > Recall | 8.599 | 8.777 | 8.134 |
Recall > Learn | 8.461 | 8.723 | 7.133 |
Average | 7.782 mm | 8.451 mm | 6.284 mm |