Performance and Cognitive Mechanisms in the Time Reproduction Task in Patients with Depression
Objective:Exploring the performance of time reproduction task in patients with depression and the mediat-ing effects played by working memory and attentional networks.Methods:The study adopted a mixed experimental design of 2(group:depression group,normal group)x 5(standard duration:700ms,1700ms,2700ms,3700ms,4700ms),with group as the between-subjects variable and standard duration as the within-subjects variable.The dependent variable indicators were ration and coefficients of variation.Working memory was also measured by using the N-back task with indicators of re-sponse time and correctness.And the attentional network paradigm was used to measure attentional functions,as indicated by response time.Results:The depression group had longer reproduction intervals on 700 ms and 1700 ms and shorter re-production intervals on 4700 ms.The coefficients of variation at 700 ms,1700 ms,2700 ms,3700 ms and 4700 ms were sig-nificantly greater in the depression group than those in the normal group.Further mediation analyses found that correctness on the 2-back task mediated group and the coefficients of variation on 1700ms,2700ms,3700ms,and 4700ms,respective-ly.Conclusion:The depression group had a tendency to more overestimate the shorter time intervals and more underesti-mate the longer time intervals.Further mediation analyses revealed the mediating effect of working memory as an internal mechanism for greater variability in the time reproduction task.
DepressionTime perceptionWorking memoryAttentional networksMediational model
万方数据
维普
