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Table 2 Bivariate correlations: Hippocampal asymmetry v P300 amplitude

From: The relationship between Hippocampal asymmetry and working memory processing in combat-related PTSD – a monozygotic twin study

  Pearson correlation Sig. (2-tailed)
  Asymmetry magnitude  
1: PTSD/Exposed Group N = 12
Pz P300 0.69 0.01**
P3 P300 0.64 0.03**
P4 P300 0.33 0.29
2: Non-PTSD/Non-Exposed Group (co-twins of Group 1) N = 12
Pz P300 −0.13 0.70
P3 P300 0.34 0.28
P4 P300 0.41 0.18
3: Non-PTSD/Exposed Group N = 23
Pz P300 0.12 0.63
P3 P300 0.00 0.98
P4 P300 −0.10 0.67
4: Non-PTSD/Non-Exposed Group (co-twins of Group 3) N = 23
Pz P300 −0.21 0.37
P3 P300 0.01 0.97
P4 P300 0.02 0.95
**p ≤ .025