Table I.
Time series modelling parameters for right and left amygdalae
| Subject group | Right amygdala | Left amygdala | ||||||
|---|---|---|---|---|---|---|---|---|
| Stationary1 model fits | Adaptive2 model fits | Non‐stationarity3 of response | F:N4 | Stationary1 model fits | Adaptive2 model fits | Non‐stationarity3 of response | F:N4 | |
| (n = 6) 100% Fear Implicit task | 2/6 | 3/6 | 3/6 | 0:3 | 2/6 | 3/6 | 3/6 | 2:1 |
| (n = 7) 75% Fear Implicit task | 0/7 | 1/7 | 1/7 | 0:1 | 4/7 | 5/7 | 4/7 | 3:1 |
| 150% Fear Implicit task | 3/7 | 2/7 | 2/7 | 1:1 | 1/7 | 3/7 | 4/7 | 2:2 |
| (n = 5) 100% Fear No task | 1/5 | 3/5 | 2/5 | 0:2 | 2/5 | 3/5 | 2/5 | 1:1 |
| 100% Fear Implicit task | 0/5 | 2/5 | 3/5 | 1:2 | 3/5 | 1/5 | 1/5 | 0:1 |
| Total | 6/30* | 11/30* | 11/30* | 2:9** | 12/30* | 15/30* | 14/30* | 8:6** |
Proportions refer to the number of significant: 1. stationary model fits; 2. adaptive model fits; 3. non‐stationarity of response for right and left amygdalae for all subjects in each group. 4. Maximum significant non‐stationarity of response occurred either during presentation of fearful (F) or neutral (N) faces in time series. Ratios refer to the number of maxima occurring in response to fearful and neutral faces for the time series of each subject group.
Over all experimental conditions, there were no significant differences between right and left amygdalae time series in the number of significant model fits and number of areas of non‐stationarity of response.
P = 0.05 Chi‐squared = 3.90 (P = 0.06 Fisher exact test) comparing over all subjects for right versus left amygdalae the total number of areas of maximal significant non‐stationarity of response to fearful versus neutral faces.