Objective To investigat e the contingent negative variation(CNV) and psychiatric symptoms in patients with post-traumatic stress disorder (PTSD),the changes of CNV and psychiatric sympt oms between the duration of episode and remission.

• 目的 了解军人创伤后应激障碍 (PTSD)患者关联性负变 (CNV)的特征和治疗缓解后CNV的变化。