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Proceedings Paper

Use of head-worn sensors to detect lapses in vigilance through the measurement of PERCLOS and cerebral blood flow velocity
Author(s): Lindsey K. McIntire; R. Andy McKinley; Chuck Goodyear; John P. McIntire
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Paper Abstract

The purpose of this study is to determine the ability of an eye-tracker to detect changes in vigilance performance compared to the common method of using cerebral blood flow velocities (CBFV). Sixteen subjects completed this study. Each participant performed a 40-minute vigilance task while wearing an eye-tracker and a transcranial doppler (TCD) on each of four separate days. The results indicate that percentage of eye closure (PERCLOS) measured by the eye-tracker increased as vigilance performance declined and right CBFV as measured by the TCD decreased as performance declined. The results indicate that PERCLOS (left eye r=-.72 right eye r=-.67) more strongly correlated with changes in performance when compared to CBFV (r=.54). We conclude that PERCLOS, as measured by a head-worn eye tracking system, may serve as a compelling alternative (or supplemental) indicator of impending or concurrent performance declines in operational settings where sustained attention or vigilance is required. Such head-worn or perhaps even offbody oculometric sensor systems could potentially overcome some of the practical disadvantages inherent with TCD data collection for operational purposes. If portability and discomfort challenges with TCD can be overcome, both TCD and eye tracking might be advantageously combined for even greater performance monitoring than can be offered by any single device.

Paper Details

Date Published: 2 May 2017
PDF: 12 pages
Proc. SPIE 10206, Disruptive Technologies in Sensors and Sensor Systems, 102060K (2 May 2017); doi: 10.1117/12.2268820
Show Author Affiliations
Lindsey K. McIntire, Infoscitex, Inc. (United States)
R. Andy McKinley, Air Force Research Lab. (United States)
Chuck Goodyear, Infoscitex, Inc. (United States)
John P. McIntire, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 10206:
Disruptive Technologies in Sensors and Sensor Systems
Russell D. Hall; Misty Blowers; Jonathan Williams, Editor(s)

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