An ERP Study Of Visuospatial Attention Transfer And Attention Distribution In Childern With Developmental Coordination Disorder

Children with developmental coordination disorders were a specific group with one or two difficulties in coarse and fine motor skills,especially in the balance,the skill of the ball and the dexterity of the hand,this disorder seriously affected the learning ability and daily self-care ability of children.Previous studies had conducted many behavioral studies on children in the disorder group,and found that children in the disorder group did not show mental retardation or neurological disorders,it was speculated that children in the disorder group may have defects in the field of visual space attention transfer and attention distribution.Therefore,this study used the ERP technology with high time resolution combined with the central demonstration and dual task paradigm to study the visual attention transfer and attention distribution characteristics of children with developmental coordination disorder,and explored the mechanisms of neuroelectrophysiology during processing.In the first study,the DCDQ questionnaire compiled by Wilson et al.was used to accurately evaluate 1110 students,68 children with a total score lower than 48 were selected as the developmental coordination disorder group and 68 normal children with a total score higher than 58 as the control group,and the selected children were evaluated twice by M-ABC test.The results showed that the total Cronbach coefficient of the 17 items in the DCDQ questionnaire was higher,indicating that the internal consistency of the DCDQ questionnaire was good.Compared with the M-ABC test results of 136 children screened,the results showed that DCDQ questionnaire and M-ABC test both could effectively screen out children with developmental coordination disorder.The second study used the central cue paradigm to investigate the differences in behavior and brain activity between 16 children in the developmental coordination disorder group and 16 children in the control group in the characteristics of attention transfer in visual space.The results showed that children in both groups reacted significantly faster under consistent conditions than under inconsistent condition,and the reaction time of the developmental coordination disorder group was slower than that of the control group in both conditions.In both groups,the amplitude of the inconsistent condition was greater than that of the consistent condition,and the children with developmental coordination disorder had smaller amplitudes under the two conditions than the control group.In the third study,the dual-task paradigm was used to investigate the differences in attention distribution behavior and brain activity between children with developmental coordination disorder and children in the control group.The results showed that the reaction time of the children in the two groups under simple tasks was significantly faster than that under the complex two-task condition,and the reaction time of children with developmental coordination disorder was slower than that of children in the control group under both task difficulty conditions.The amplitude of simple task was larger than that of complex dual task in both groups,and the amplitude of P3 in both groups was larger than that in the control group,regardless of the simple task or the complex dual task.These results showed that children in the developmental coordination disorder group showed defects in inhibition and attention to distribution.In this study,DCDQ questionnaire,M-ABC test,behavioral and EEG tests were used to explore the characteristics of visual spatial attention transfer and attention distribution in children with developmental coordination disorder,revealed the deficiency of visual spatial attention ability in children with developmental coordination disorder,and had defects in visual spatial attention transfer and attention distribution ability.This conclusion was highly consistent with Piaget’s theory of behavioral and cognitive development.