Table 2.
P450 amplitudes (μV) in response to affective stimuli in Mexican Americans with extraversion or neuroticism traits
| Extraversion Score ≥ 18 | |||
|---|---|---|---|
| Men (n = 9) | Women (n = 9) | Total (n = 18) | |
| Frontal lead | |||
| Facial expression | |||
| Happy | 7.11 ± 1.52 | 7.67 ± 1.24 | 7.39 ± 0.95 |
| Sad | 8.92 ± 1.69** | 9.07 ± 2.55 | 8.99 ± 1.48** |
| Neutral | 5.73 ± 1.46 | 6.01 ± 1.11 | 5.87 ± 0.89 |
| Centro-Parietal lead | |||
| Facial expression | |||
| Happy | 11.99 ± 1.58*** | 9.40 ± 1.05 | 10.69 ± 0.97 |
| Sad | 12.15 ± 2.10* | 11.35 ± 1.44 | 11.75 ± 1.24 |
| Neutral | 6.65 ± 0.91 | 6.55 ± 1.01 | 6.60 ± 0.66 |
| Mean Extraversion Score (for entire sample, n = 222) | 13.5 ± 0.4 | 12.6 ± 0.3 | 13.0 ± 0.2 |
| Neuroticism Score ≥ 16 | |||
| Men (n = 6) | Women (n = 16) | Total (n = 22) | |
| Frontal lead | |||
| Facial expression | |||
| Happy | 7.04 ± 1.96 | 7.42 ± 0.82 | 7.31 ± 0.79 |
| Sad | 7.77 ± 2.15 | 8.68 ± 1.05 | 8.43 ± 0.94* |
| Neutral | 5.10 ± 1.05 | 6.05 ± 0.82 | 5.79 ± 0.66 |
| Centro-Parietal lead | |||
| Facial expression | |||
| Happy | 10.73 ± 0.91 | 13.15 ± 0.89** | 12.49 ± 0.72*** |
| Sad | 10.65 ± 1.67 | 14.25 ± 1.21** | 13.27 ± 1.03** |
| Neutral | 6.64 ± 0.94 | 8.51 ± 0.65** | 8.00 ± 0.56** |
| Mean Neuroticism Score (for entire sample, n = 222) | 4.9 ± 0.5 | 5.3 ± 0.5 | 8.4 ± 0.3 |
Values are Means ± SEM
*
p < 0.05,
**
p < 0.01,
***
p < 0.001 comparing groups shown to Mexican American participants without extraversion or neuroticism traits