Table 2.
1st eigenvalue of Z transformed difference of 1st and 2nd half scan session. Table shows the mean (standard deviation) of the largest eigenvalue of the Z transformed difference between the first and second fMRI runs. This is computed separately for the 36 and 264 ROI set, with and without GSR, and for the covariance and inverse covariance matrices. The far right column shows the t and p values for the comparison of the sample (unconditioned) and conditioned condition.
| Sample | Conditioned | t,p | |||
|---|---|---|---|---|---|
|
36 ROI
Set |
w/ GSR | Covariance | 17.8 (6.4) | 17.8 (6.6) | 0.7, 0.49 |
| Inverse | 16.7 (3.4) | 13.0 (2.0) | 7.3, <10−8 | ||
| w/o GSR | Covariance | 19.0 (4.7) | 19.0 (4.8) | 0.5, 0.64 | |
| Inverse | 17.2 (3.5) | 13.0 (2.1) | 8.5, <10−10 | ||
|
264 ROI
Set |
w/ GSR | Covariance | 108.2 (34.2) | 107.6 (35.4) | 1.3, 0.19 |
| Inverse | 138.9 (20.9) | 35.2 (5.6) | 35.5, <10−39 | ||
| w/o GSR | Covariance | 128.4 (30.8) | 128.3 (31.0) | 1.0, 0.28 | |
| Inverse | 146.6 (22.8) | 35.0 (4.5) | 38.1,<10−40 |