Summary of between-group t-tests: Increased BOLD signal elicited by happy faces compared to neutral faces in the PTSD (n = 23) and Trauma-exposed controls (TC: n = 20; (p<.005 uncorrected).

Note: TC = trauma-exposed controls,
*trend level result.
Summary of between-group t-tests: Increased BOLD signal elicited by happy faces compared to neutral faces in the PTSD (n = 23) and Trauma-exposed controls (TC: n = 20; (p<.005 uncorrected).

注：TC=创伤暴露对照组（trauma-exposed controls），*趋势水平检验结果。
组间t检验总结：相较于中性面孔，快乐面孔所诱发的血氧水平依赖（Blood Oxygen Level-Dependent, BOLD）信号在创伤后应激障碍（Post-Traumatic Stress Disorder, PTSD）组（n=23）与创伤暴露对照组（TC，n=20）中显著增强，未经校正的p值小于0.005。