Time on task and blink effects on saccade duration

Changes in saccade duration, saccade amplitude and slope of the regression line relating amplitude and duration were assessed during a 2 hour air traffic control simulating task. Mean duration significantly increased as a function of time on task (TOT). Saccade amplitude decreased during the beginni...

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Published in:Ergonomics 1996-04, Vol.39 (4), p.649-660
Main Authors: MCGREGOR, DAVID K., STERN, JOHN A.
Format: Article
Language:English
Subjects:
Air Traffic Control
Applied physiology
Biological and medical sciences
Blinking - physiology
Ergonomics. Work place. Occupational physiology
Eye Blink
Fatigue
Fatigue
EOG (Electrooculogram)
Female
Human physiology applied to population studies and life conditions. Human ecophysiology
Humans
Male
Medical sciences
Mental Fatigue
Saccade
Saccades - physiology
Simulation
Space life sciences
Task Performance and Analysis
Time Factors
Vigilance
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description Changes in saccade duration, saccade amplitude and slope of the regression line relating amplitude and duration were assessed during a 2 hour air traffic control simulating task. Mean duration significantly increased as a function of time on task (TOT). Saccade amplitude decreased during the beginning part of the two hour period, increased in the middle and decreased in the final part of task performance. Differences in saccade duration were also assessed for saccades occurring during and independent of eye blinks. When matched for amplitude, electrooculographically measured saccades occurring during a blink were significantly slower than those occurring independent of a blink. Our results suggest caution in interpreting saccade velocity change as an index of 'fatigue' since most of the reduction in average saccade velocity may be secondary to increases in blink frequency.
doi_str_mv 10.1080/00140139608964487
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source Taylor & Francis Engineering, Computing & Technology Archive
subjects Air Traffic Control
Applied physiology
Biological and medical sciences
Blinking - physiology
Ergonomics. Work place. Occupational physiology
Eye Blink
Fatigue
Fatigue
EOG (Electrooculogram)
Female
Human physiology applied to population studies and life conditions. Human ecophysiology
Humans
Male
Medical sciences
Mental Fatigue
Saccade
Saccades - physiology
Simulation
Space life sciences
Task Performance and Analysis
Time Factors
Vigilance
title Time on task and blink effects on saccade duration
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