Perceptual Organization and Central Coherence During the Visual Processing in Children With Autism: Evidence for Disrupted Functional Connectivity in Autistic Brain
Year: 2014
Type: article
Study design: Observational Study
Abstract: ObjecƟ ve A variety of evidence demonstrated altered perceptual funcƟ oning paƩ ern in the brain of children with auƟ sm. This can be related to or the cause of other diagnosƟ c symptoms in auƟ sm spectrum. In the present study, the visual- perceptual organizaƟ on in auƟ sƟ c children is studied. These processes require central coherence and typical funcƟ onal connecƟ vity among neural structure in the brain. Materials and Methods 25 high funcƟ oning auƟ sƟ c boys and 25 neuro - typical boys were assessed in terms of visual perceptual processing. Visual sƟ muli include fragmented (incomplete) and complete images of animate and inanimate objects which were presented in a monitor. The subject’s task included rapid and accurate naming of images that have been seen. Responses were compared in two groups by independent- T test. The effect of completeness and image type factors on samples’ visual processing were also analyzed by repeated measure analysis of variance. StaƟ sƟ cal analysis was performed using spss soŌ ware seventeenth ediƟ on. Results InteracƟ on effect of completeness, image type and group on subjects’ visual processing was significant (p<0.05). Also auƟ sƟ c children have lower performance in naming incomplete images as well as recognizing inanimate objects (p=0.000); however, both groups were similar in recogniƟ on of whole image of animate and inanimate objects (p=0.597). On the other hand, all the samples perform beƩ er in detecƟ on of complete images than fragmented images (p=0.000). Conclusion Failure to recognize the fragmented images of objects, in parƟ cular, inanimate, could be marker of impaired processes related to central coherence of visual informaƟ on in the brain of auƟ sƟ c children. DetecƟ on of these images in these children was significantly different from neuro- typical children. This may be the indicator of impaired visual perceptual organizaƟ on and an evidence for disrupted funcƟ onal connecƟ vity among the brain area in children with auƟ sm. A B S T R A C T
Institution: Tehran University of Medical Sciences
Language: English
Subfield: Cognitive Neuroscience
Field: Neuroscience
Domain: Life Sciences
Open Access status: diamond
OpenAlex ID: W2342231535