Table 3.
Coordinates for overall differences in functional activation for racial in-group vs out-group
| Region | Brodmann | x | y | z | k | Max | Mean |
|---|---|---|---|---|---|---|---|
| Overall racial in-group > out-group | |||||||
| No significant clusters | n/a | n/a | n/a | n/a | n/a | n/a | n/a |
| Overall racial out-group > in-group | |||||||
| LH middle frontal gyrus (cluster) | 32 | 0 | 9 | 44 | 119 | 0.20 | 0.15 |
| LH middle frontal gyrus | 32 | 0 | 9 | 44 | a | 0.20 | 0.15 |
| RH superior frontal gyrus | 6 | 3 | 5 | 8 | a | 0.18 | 0.15 |
| RH anterior insula (cluster) | 45 | 40 | 20 | 13 | 123 | 0.20 | 0.15 |
| RH anterior insula | 45 | 40 | 20 | 13 | b | 0.20 | 0.15 |
| RH anterior insula | 13 | 39 | 20 | 5 | b | 0.18 | 0.15 |
| RH claustrum | 32 | 11 | 8 | b | 0.19 | 0.16 |
Notes: Brodmann = Brodmann area; x, y, z = coordinates in MNI space; k = cluster size in mm3; max = maximum value within cluster; mean = average value within cluster; LH = left hemisphere; R = right hemisphere. There were no significant in-group > out-group clusters. All analyses were k-threshold corrected at P < 0.001.
a
Associated subclusters of LH middle frontal gyrus.
b
Associated subclusters of RH inferior frontal gyrus.