Abstract:Objective To explore the status of executive function and sensory gating function in children with attention deficit hyperactivity disorder (ADHD) and analyze the relationship between them. Methods Wisconsin Card Sorting Test (WCST) and auditory click stimulus mode ERP-P50 check were carried out in 36 cases of children who met the criteria for diagnosis of ADHD according with the tenth edition of International Classification of Diseases (ICD-10). The patients were compared with 38 cases in the control group with matching gender and age. At the same time, Pearson correlation analysis was used to analyze the correlations between the indicators of ERP-P50 and WCST. Results The latent periods of P50 S1 and S2 in the ADHD group were longer than those in the control group; and P50 S1, the amplitudes of (S1-S2), and 100 (1-S2/S1) were lower than those in the control group; the amplitude of S2 and S2/S1 were higher than those in the control group. The categories completed (Cc) and conceptual level (CI%) of WCST in the ADHD group were lower than those in the control group; the responses errors (Re), responses perseverative errors (Rpe) and response number on the first category (Rf) were higher than those in the control group, the differences were statistically significant (P < 0.05). Pearson correlation analysis concluded the latent periods of P50 S1 and S2 and the amplitude of P50 S1 did not have correlations with the indicators of WCST (P > 0.05), the amplitude of P50 S2 and S2/S1 had negative correlations with Cc and CI% and positive correlations with Re, Rpe and Rf (P < 0.05); the amplitudes of (S1-S2) and 100(1-S2/S1) had positive correlations with Cc and CI% and negative correlations with Re, Rpe and Rf (P < 0.05). Conclusions Children with ADHD have damages of executive function and sensory gating function and there are certain correlations between the damages of them.