Table 2.
Results of activation sizes obtained from motor, visual and memory encoding tasks
| Subject | Number of activated voxels using classical analysis | Number of activated voxels using optimal HRF | Optimal HRF time of onset (t 0) | Optimal HRF time of rise (t up) |
|---|---|---|---|---|
| Motor task | ||||
| 1 | 2,751 | 3,075 | 1 s | 4 s |
| 2 | 2,706 | 2,819 | −1 s | 5 s |
| 8 | 698 | 698 | 0 s | 5.4 s |
| 10 | 1,387 | 1,448 | −2 s | 7 s |
| 11 | 14,917 | 14,917 | 0 s | 5.4 s |
| 12 | 4,594 | 5,494 | −1 s | 7 s |
| 13 | 2,387 | 2,592 | 4 s | 2 s |
| Group | 4,206 ± 4,879 | 4,435 ± 4,860 | 0.1 ± 2.0 s | 5.3 ± 1.8 s |
| Visual task | ||||
| 2 | 4,622 | 4,955 | −5 s | 8 s |
| 3 | 1,607 | 1,607 | 0 s | 5.4 s |
| 5 | 2,842 | 2,842 | 0 s | 5.4 s |
| 10 | 552 | 651 | 2 s | 5 s |
| 11 | 1,592 | 2,016 | 1 s | 7 s |
| 12 | 1,725 | 2,735 | 1 s | 7 s |
| 13 | 2,837 | 2,837 | 0 s | 5.4 s |
| Group | 2,254 ± 1,312 | 2,520 ± 1,339 | −0.1 ± 2.3 s | 6.2 ± 1.1 s |
| Scene encoding task | ||||
| 1 | 10,707 | 11,093 | −1 s | 5 s |
| 2 | 9,257 | 9,804 | 4 s | 2 s |
| 3 | 9,237 | 9,455 | −2 s | 6 s |
| 4 | 8,660 | 9,226 | 1 s | 6 s |
| 6 | 8,392 | 8,963 | 0 s | 4 s |
| 7 | 5,416 | 5,679 | 1 s | 4 s |
| 8 | 7,660 | 7,931 | −3 s | 7 s |
| 9 | 7,056 | 7,405 | 3 s | 3 s |
| 10 | 7,972 | 8,017 | 0 s | 5 s |
| 13 | 2,707 | 3,106 | 2 s | 3 s |
| Group | 7,606 ± 2,203 | 8,068 ± 2,286 | 0.5 ± 2.2 s | 4.5 ± 1.6 s |
| Face encoding task | ||||
| 1 | 3,356 | 4,227 | 0 s | 4 s |
| 2 | 4,675 | 4,802 | 3 s | 3 s |
| 3 | 4,626 | 4,856 | −2 s | 6 s |
| 4 | 3,212 | 3,452 | 3 s | 3 s |
| 6 | 3,177 | 3,355 | 1 s | 4 s |
| 7 | 3,362 | 3,409 | 2 s | 4 s |
| 8 | 4,194 | 4,347 | 0 s | 4 s |
| 9 | 3,108 | 3,160 | −1 s | 7 s |
| 10 | 4,594 | 4,633 | 0 s | 6 s |
| 13 | 3,990 | 4,097 | 2 s | 4 s |
| Group | 3,829 ± 655 | 4,034 ± 643 | 0.8 ± 1.7s | 4.5 ± 1.4s |
Number of activated voxels (P < 0.005, FDR‐corrected, extent threshold = 20 voxels) for classical analyses (t 0 = 0 s, t up = 5.4 s) and for optimal HRF analyses (using the HRF parameters specified for each subject). Mean and standard deviation of the number of activated voxels, using classical HRF and using subject‐specific HRFs, are also indicated for the group.