Effect of frequency filtering of face images on attention bias of children with autism and normal children

Abstract

Background and Aim: Visual information by a range of different frequencies transmitted and visual neurons are sensitive to different frequencies for processing this information. The present study was done for examine the difference of attention to filtered and non filtered images in children with autism and normal children. Materials and Methods: In present cross sectional study, thirty children with autism and thirty normal children matched in age and sex compared in filtered stimuli of faces with dot probe task. Data was analysed with Repeated Measures ANOVA test and version 18 of spss. Results: children with autism and normal children had significant difference in reaction time to filtered faces. Children with autism more attend to high frequency images than low frequency images in compare to normal children and they have lower reaction time than normal children. Conclusion: Frequency filter visual information can lead to more attention in children with autism, and it could be considered children's education and therapeutic interventions. Key words: Autism, Frequency Filtering, Attention Bias