Volume 13 Number 1 (Jan. 2018)
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JCP 2018 Vol.13(1): 35-43 ISSN: 1796-203X
doi: 10.17706/jcp.13.1.35-43

Development of Objective Index to Determine Autism by Eyeball Movements

Ippei Torii, Kaoruko Ohtani, Takahito Niwa, Naohiro Ishii
Aichi Institute of Technology, 1247 Yachigusa, Yakusa-Cho, Toyota, Aichi, Japan.

Abstract—In this study, the development of the objectivity index for the diagnosis of the autistic children with a lack of the communication ability and an evaluation of the curative effect using the ocular movement measurement is discussed. In past study, we developed communication applications "Eye Talk" and "Eye Tell" for people who have difficulty in conversation and writing such as children with physical disability, ALS patients or elderlies using the blink determination system. The team of Dr. Kitazawa in Graduate School of Frontier Biosciences in Osaka University performed the clinical application to distinguish autism group by measuring "where and when" he/she looks at using Tobii eye trucker. Our study is a judgment by the ocular movement measurement. We developed the image processing technique by afterimage used in the blink determination. First, the eye area is captured by a front camera of laptop PC. Second, we extracted the pixels of pupils with 30-40 fps of accuracy and digitized eyeball movements. We converted the difference in eyeball movements between the right and left eyes into a graph and define it in multidimensional measure. We measured the amount of the degree that the eyes of the subject run off the track based on the afterimage, then added up the amount of change of right and left eyes and showed the total. Finally, we set the identification border with density function of the distribution, cumulative frequency function, and ROC curve. With this, we established an objective index to determine autism, normal, false positive, and false negative. This method is used as an objective evaluation indicator to judge non-autistic and autistic people more clearly in early stage.

Index Terms—Oculomotor, autism, ROC curve, afterimage.


Cite: Ippei Torii*, Kaoruko Ohtani, Takahito Niwa, Naohiro Ishii, "Development of Objective Index to Determine Autism by Eyeball Movements," Journal of Computers vol. 13, no. 1, pp. 35-43, 2018.

General Information

ISSN: 1796-203X
Frequency: Monthly (2006-2014); Bimonthly (Since 2015)
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO,  ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat, CNKI,etc
E-mail: jcp@iap.org
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