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The act of task difficulty and eye-movement frequency for the 'Oculo-motor indices'

Content Provider	ACM Digital Library
Author	Nakayama, Minoru Takahashi, Koji Shimizu, Yasutaka
Abstract	The oculo-motor re ects the viewer s ability to process visual information. This paper examines whether the oculo-motor was affected by two factors: rstly task dif culty and secondly eye-movement frequency. In this paper, oculo-motor indices were de ned as measurements of pupil size, blink and eye-movement. For the purpose of this study, two experiments were designed based on previous subsequential ocular tasks were subjects were required to solve a series of mathematical problems and to orally report their calculations.The results of this experiment found that pupil size and blink rate increased in response to task dif culty in the oral calculation group. In contrast however both the saccade occurrence rate and saccade length were found to decrease with the increased dif culty of the task. The results suggests that oculo-motor indices respond to task dif culty. Secondly, eye-movement frequencies were elicited by the switching frequency of a visual target. Pupil size and the saccade time were found to increase with the frequency however, blink and gazing time were found to decrease in response to the frequency. There was a negative correlation between blinking and gazing time. Additionally, the correlation between blinking and saccade time appeared in the higher frequencies.These results indicate the oculo-motor indices are affected by both task dif culty and eye-movement frequency. Furthermore, eye-movement frequency appears to play a different role than that of task dif culty.
Starting Page	37
Ending Page	42
Page Count	6
File Format	PDF
ISBN	1581134673
DOI	10.1145/507072.507080
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2002-03-25
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Pupil size Gaze Eye-movement Blink Saccade
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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