Table 2.
Activation volume in each subject increases with increasing spectral complexity
| Subject | Threshold (min t) | PT-LT (mm3) | PT-RT (mm3) | BPN-LT (mm3) | BPN-RT (mm3) | VOW-LT (mm3) | VOW-RT (mm3) | WN-LT (mm3) | WN-RT (mm3) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 8.7 | 2125 | 1487 | 5706 | 5851 | 7573 | 7300 | NA | NA |
| 2 | 8.4 | 1814 | 1802 | 5654 | 4579 | 8817 | 7189 | NA | NA |
| 3 | 4.5 | 1726 | 1924 | 5337 | 7993 | 11,501 | 12,284 | NA | NA |
| 4 | 6.7 | 2279 | 1444 | 4822 | 3531 | 6729 | 5899 | NA | NA |
| 5 | 9.4 | 792 | 2777 | 2189 | 4052 | 5890 | 8063 | NA | NA |
| 6 | 4.4 | 2077 | 1600 | 4869 | 4861 | 14,467 | 13,393 | NA | NA |
| 7 | 9.9 | 3021 | 586 | 3896 | 1524 | 8302 | 2764 | 3200 | 2386 |
| 8 | 10.1 | 2747 | 862 | 3039 | 743 | 8440 | 4916 | 4199 | 3460 |
| 9 | 3.0 | 1456 | 2056 | 10,329 | 13,871 | 21,403 | 27,006 | 9898 | 12,572 |
| 10 | 7.6 | 2346 | 1262 | 6585 | 3156 | 7543 | 4891 | 9137 | 5757 |
| 11 | 5.5 | 2816 | 754 | 3679 | 1140 | 9350 | 6308 | 2685 | 2327 |
| 12 | 5.2 | 2341 | 1135 | 2643 | 2653 | 6913 | 6161 | 2456 | 2958 |
| 13 | 4.4 | 2360 | 1226 | 5784 | 6923 | 9113 | 14,192 | 5016 | 5398 |
| Mean | 6.7 | 2146 | 1455 | 4964 | 4683 | 9695 | 9259 | 5227 | 4980 |
| SE | 0.7 | 166 | 165 | 582 | 974 | 1155 | 1763 | 1159 | 1368 |
The threshold for each subject was chosen such that the volume of their average PT activation across hemispheres was consistent with average human auditory core volumes reported in previous anatomical studies.