Study between supraliminal and subliminal N-back task in the children with symptoms of attention-deficit/hyperactivity disorder

VernacularTitle:注意缺陷多动障碍患儿阈上和阈下N-back任务研究
Author: Wenli ZHU ; Changqun CAI ; Liangshuang YIN ; Daojin WANG ; En ZHANG ; Wei XIONG
Publication Type:Journal Article
Keywords: Attention deficit hyperactivity disorder; Cognition; Memory
From: Chinese Journal of Behavioral Medicine and Brain Science 2015;24(10):919-921
CountryChina
Language:Chinese
Abstract: Objective To explore the mechanisms underlying supraliminal and subliminal N-back task in the children with symptoms of attention-deficit/hyperactivity disorder (ADHD).Methods Thirty-five ADHD children and thirty-three matched normal controls were enrolled.Working memory was measured with the different reaction time of N-back task.Results The error number of the subliminal 2-back task in ADHD group ((4.49± 1.20) times) was worse than that of the healthy controls ((3.79±-1.14) times), and the difference was significant(t=-2.459, P=0.017).In ADHD group,the error number of 1-back task and reaction time of 2-back task in subliminal task ((4.77±1.09) times, (1 447.49±271.35) ms) were worse than those of supraliminal task ((3.09± 1.63) times, (1 315.48±229.63) ms), and the difference was significant between the two tasks (t=4.755, P=0.000;t=-2.281, P=0.029).But there were no significant findings in healthy controls(P＞0.05).Conclusion The present study suggests that the working memory is impaired in ADHD children.