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A Study to Determine the Comparability of Pupillographic and Electroculographic Measures in Determining Fatigue Effects in Truck Drivers.
MISSING :65 pages
Subjects were required to perform four vigilance tasks each lasting 32 minutes. The tasks involved temporal discrimination with a simple motor response required for the shorter duration signal. The ratio of short to long duration signal was 1:2. The short duration signal persisted for 200 ms; the long duration signal, for 400 ms. Two modes of stimulus presentation were used--auditory and visual-- as well as two schedules of presentation--fixed interstimulus interval (2 s) and variable interstimulus interval (x-2 s). Electrooculographic and behavioral data were obtained. The results are summarized. Evaluation of the eyeblink alertness detector identified a number of problems with the device, which are summarized in the report.
CP; Final Contract Report;
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division