Characteristics Of Attentional Blink Of Middle School Students With Developmental Dyslexia Recognizing Different Material Targets

Developmental dyslexia is the most important type of learning disability.Previous studies have found that the attentional system of people with developmental dyslexia is impaired.Compared with normal subjects,they do show a more serious attentional blinking effect.More time to divert attention.In order to explore the characteristics of attention detachment affecting the developmental dyslexia students’ dyslexia,the development of dyslexia students’ attention to detachment behaviors and EEG characteristics of different target types of RSVP sequences was studied through the visual presentation paradigm of attention sprint rapid sequence.Provide reference for the intervention and transformation of the dyslexic.This study is divided into three studies and four experiments.In study one,experiment a uses 2(group: developmental dyslexia group,control group)×2(T1 word type: true character,false character)×2(T2 delayed position : Lag3,lag8)mixed experiment design,study one experiment b uses 2(group: developmental dyslexia group,control group)×2(T1 word type: true word,false word)×2(T2 delayed position lag3,lag8)mixed experimental design,by paying attention to the classic paradigm RSVP,examining the characteristics and neural mechanism of developmental dyslexia when T1 is a true or false word;the second experiment uses 2(group: developmental dyslexia group),Control group)×2(T1 word type: Chinese numerals,Arabic numerals)×2(T2 delay position lag3,lag8)mixed experimental design,by paying attention to the classic paradigm RSVP,when investigating T1 Chinese and Arabic numbers,develop The characteristics and neural mechanism of attentional dyslexia in sexual dyslexia;three experiments used a mixed experimental design of 2(group: developmental dyslexia group,control group)×2(T2 delayed position lag3,lag8),by paying attention to the classics of dyslexia The RSVP paradigm examines the characteristics and neural mechanisms of attentional blinking in developmental dyslexia when T1 is a geometric figure.The following conclusions are drawn through experimental research:Firstly,the subjects in the developmental dyslexia group were more serious than the control group in the two types of materials(Chinese characters and numbers,graphic materials).Secondly,the subjects in the developmental dyslexia group had a lower rate of recognition of T1 than the control group in the attention blinking sequence of many materials.Thirdly,the subjects in the developmental dyslexia group caused a larger average P300 wave than the control group lag3 in the text material attention blink test.Fourthly,the subjects in the developmental dyslexia group caused a smaller average P300 amplitude than the control group lag3 in the digital and graphic material attention blink test.Fifthly,the subjects in the developmental dyslexia group caused a larger average amplitude of LPP than the control group lag3 in the text material attention blink test.Sixthly,the subjects in the developmental dyslexia group caused a smaller average amplitude of LPP than the control group lag3 in the text material attention blink test.Seventhly,the behavioral results and some EEG results support the developmental dyslexia to a certain degree of attention transfer defects.Under certain circumstances,it supports the explanation of the attention deficiencies theory to the characteristics of attentional detachment in developmental dyslexia.