产后与非产后抑郁症患者心理表征信息加工的研究

Study on information processing of mental representation between postpartum and non-postpartum depression patients

目的探讨产后与非产后抑郁症患者心理表征信息加工机制的差异,以便为产后抑郁症提供易感性指标。方法对26例产后抑郁症患者(产后抑郁组)、28例非产后抑郁症患者(非产后抑郁组)进行心理旋转任务的测定,测量其错误数和反应时,并与28名健康志愿者(正常对照组)的结果进行比较。结果①与正常对照组[(18.6±4.1)%]相比,产后抑郁组[(35.4±7.5)%]、非产后抑郁组[(29.6±6.8)%]错误率均显著升高,且产后抑郁组错误率也显著高于非产后抑郁组(P<0.05)。②与正常对照组[(852.1±91.2)ms]相比,产后抑郁组[(1012.2±102.5)ms]、非产后抑郁组[(964.2±114.2)ms]反应时显著延长,且产后抑郁组反应时显著长于非产后抑郁组(P<0.05)。结论产后与非产后抑郁患者心理表征信息加工受损机制不一致,提示心理表征信息加工受损机制可能为产后抑郁患者的易感性指标。

Objective To investigate the difference of information processing of mental representation between postpartum and non- postpartum depression patients, and to explore the susceptibility index for postpartum depression patients. Methods Total 26 postpar- tum and 28 non-postpartum depression patients made mental rotation tasks to measure the error rate and the response time. Another 28 healthy controls were given the same tests simultaneously. The data were compared among three groups. Results ①Compared with the controls, the error rate increased in postpartum and non-postpartum depression patients [ （ 18.6 ± 4.1 ） % vs （35.4 ± 7.5 ） % and （29.6 ±6.8 ） %, P 〈 0.05 ]. The error rate was lower in postpartum group than that in non-postpartum group （ P 〈 0.05 ）. ②Compared with the controls, the response time was longer in postpartum and non-postpartum depression patients [ （852.1 ± 91.2）ms vs （ 1 012.2 ± 102.5） ms and （964.2± 114.2） ms, P 〈 0.05 ]. The response time was shorter in postpartum group than that in non-postpartum group （P 〈 0.05）. Conclusion The postpartum and non-postpartum depression patients present a different impaired mechanism on information processing of mental representation. These suggest that the impaired mechanism on information processing of mental repre- sentation may be a susceptibility index for postpartum depression patients.