Table 1.
Mean (SD) Hippocampal volumes in monozygotic twins with PTSD, their trauma-unexposed twins, and in trauma-exposed and trauma-unexposed monozygotic twins without PTSD
| |
PTSD (n = 24) |
Non-PTSD (n = 46) |
||
|---|---|---|---|---|
| Trauma exposed (n = 12) | Trauma unexposed (n = 12) | Trauma exposed (n = 23) | Trauma unexposed (n = 23) | |
| Right HC volume (ml) |
3.32 (0.59) |
3.26 (0.39) |
3.76 (0.54) |
3.61 (0.48) |
| Left HC volume (ml) |
3.34 (0.46) |
3.49 (0.57) |
3.65 (0.50) |
3.63 (0.45) |
| Total HC volume (ml) | 6.66 (0.83) | 6.75 (0.90) | 7.41 (0.93) | 7.25 (0.69) |