Eye Movement Of Children With Autism Spectrum Disorder Under Different Stimuli Types

Objective: Prior studies found that the normal individuals have a specific way to view of the face,they look at the eyes firstly,and then the nose and mouth,these three areas are usually considered as the core feature areas,we also call them “interest areas”.Compared with normal people,autistic patients pay less attention to the interest areas of the face,and their processing strategy are different from normal people.Previously used in this study to stimulate the use of a single material,either for dynamic video,or as a static picture,there are fewer combinations of two stimulating materials.And the researchers are less concerned about the neurological soft system of patients with autism,there is no neurological soft signs and eye movement test indicators combined research,so the purpose of this study are as follows: to explore the autistic children and normal children on the picture,Video and two different stimulus materials;the analysis of autistic children and normal children with neurological soft system performance is consistent;study of neurological soft signs and eye movements are related.Methods: Twenty-three patients with autism spectrum disorder were selected and the normal control group was selected.The patients were followed by eye movement examination and neurological soft examination.The age,education level and CNI score of the two groups were tested by independent sample t test.The age of the two groups was balanced by chi-square test.The age of the two groups was analyzed by the mean and standard deviation.Sex test.The area of interest was divided into eye and mouth by means of interest area,and the search time,the number of search points,the time of the first gaze,the time of gaze,the number of gaze and the proportion of gaze were calculated by variance analysis of factorial design.Finally,Pearson correlation was used to calculate the correlation coefficient between the scores of the neurological soft signs and the eye movement.Results: There were no significant differences in age,sex composition and educational level between the two groups(P> 0.05).There were no significant differences in the three factors of exercise coordination,sensory integration and depressing,and there was significant difference(P> 0.05)between the two groups.There was no significant difference in the search time,the number of search points,the time of the first fixation,the total time of gaze,the proportion of gaze and the number of fixation points in the autism group and the normal control group,regardless of the static image or the dynamic video.0.05).After the interest area was further divided into the eye area and the mouth area,the main effect of the type of interest area was significant,the two groups of children for the mouth of the gaze time,the number of points and the proportion of gaze were significantly less than the eye area,the mouth of the search time,Search points are significantly more than eye area.In the stimulation of the picture,the time(t =-2.346,P = 0.025)and the fixation point(t =-2.346,P = 0.025)were significantly less in the autistic patients than in the normal children,but for the eyes There were no significant differences in children.Conclusions: This study found that there was no significant difference in the time and duration of attention between the autistic patients and the normal children,but the significant difference between the time of gaze and the fixation of the mouth was significantly higher than that of the normal children,suggesting that we could further study the effects of mouth.However,due to the small sample size and are high functional autistic patients,the need to carefully push the results of this study to patients with low functional autism.Hopefully there will be more research on low functional autism in the future.