Table 5.
Mean parameter estimates for peak voxel activity in anterior cingulate cortex (ACC) and amygdala (AMY) for young and older groups.
| Brain region | Age group | ||
|---|---|---|---|
| Young (n = 18) | Older (n = 16) | ||
| ACC | NegHi | 1.35 (1.42) | −4.93 (2.27) |
| NegMed | −4.91 (2.08) | −3.08 (1.98) | |
| NegLo | −4.29 (1.48) | 2.39 (1.35) | |
| NeuAll | −1.78 (1.83) | −4.68 (1.60) | |
| AMY | NegHi | 22.93 (7.18) | 12.88 (4.92) |
| NegMed | 15.18 (5.07) | 2.34 (4.34) | |
| NegLo | 15.83 (4.44) | −0.93 (3.96) | |
| NeuAll | 6.74 (2.29) | 4.12 (3.20) | |
Values before parentheses indicate the means. Values in parentheses indicate the standard errors of the means. The mean parameter estimates were extracted in each of the four conditions against the baseline activity for each age group at the coordinates corresponding to the peak voxels for each of the ACC and AMY regions showing overlapping activity between (1) the Arousal × Age Group interaction and (2) the two-sample t-test targeting low arousing stimuli.