Impaired exploratory eye movements in children with Asperger’s syndrome

Abstract Objective: Previous eye-tracking studies using an eye mark recorder have reported that disturbances in exploratory eye movements in adult schizophrenic patients are associated with social functioning. The current study sought to determine whether exploratory eye-movement disturbances are pr...

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Bibliographic Details
Published in:Brain & development (Tokyo. 1979) 2014-03, Vol.36 (3), p.241-247
Main Authors: Ohya, Takashi, Morita, Kiichiro, Yamashita, Yushiro, Egami, Chiyomi, Ishii, Youhei, Nagamitsu, Shinichiro, Matsuishi, Toyojiro
Format: Article
Language:English
Subjects:
Asperger Syndrome - physiopathology
Caregivers
Child
Exploratory Behavior
Eye Movement Measurements
Eye Movements
Faculty
Female
Fixation, Ocular
Humans
Intelligence Tests
Male
Neurology
Psychiatric Status Rating Scales
Psychomotor Performance
Task Performance and Analysis
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Summary:Abstract Objective: Previous eye-tracking studies using an eye mark recorder have reported that disturbances in exploratory eye movements in adult schizophrenic patients are associated with social functioning. The current study sought to determine whether exploratory eye-movement disturbances are present in children with Asperger’s syndrome (AS) compared with typically developing (TD) children. Materials/Participants: The participants were 23 children with AS and 23 age-matched TD children. We measured exploratory eye movements using an EMR-8B eye mark recorder and an exploratory eye movement-measuring device. Method: Eye movements were recorded while participants freely observed a geometric figure (free viewing task), and while they complied with the instructions of an experimenter (repeat-comparison task). We assessed eye fixation points (EFPs) and total eye scanning length (TESL) in all tasks, and measured the responsive search score (RSS) in the repeat-comparison task. Results: In the free viewing task, children with AS exhibited significantly shorter TESL compared with TD children. In the repeat-comparison task, children with AS exhibited significantly lower RSS. Autism Spectrum Screening Questionnaire scores were negatively correlated with both EFP and TESL, but not RSS. Conclusion: The current results revealed that children with AS exhibited dysfunction in exploratory eye movements. Thus, assessing exploratory eye movements in a repeat-comparison task may be useful for detecting social impairment among children with AS.
ISSN:0387-7604
1872-7131
DOI:10.1016/j.braindev.2013.04.005