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Proceedings Paper

Near-infrared spectroscopy assessment of divided visual attention task-invoked cerebral hemodynamics during prolonged true driving
Author(s): Ting Li; Yue Zhao; Yunlong Sun; Yuan Gao; Yu Su; Yiyi Hetian; Min Chen
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Paper Abstract

Driver fatigue is one of the leading causes of traffic accidents. It is imperative to develop a technique to monitor fatigue of drivers in real situation. Near-infrared spectroscopy (fNIRS) is now capable of measuring brain functional activity noninvasively in terms of hemodynamic responses sensitively, which shed a light to us that it may be possible to detect fatigue-specified brain functional activity signal. We developed a sensitive, portable and absolute-measure fNIRS, and utilized it to monitor cerebral hemodynamics on car drivers during prolonged true driving. An odd-ball protocol was employed to trigger the drivers’ visual divided attention, which is a critical function in safe driving. We found that oxyhemoglobin concentration and blood volume in prefrontal lobe dramatically increased with driving duration (stand for fatigue degree; 2-10 hours), while deoxyhemoglobin concentration increased to the top at 4 hours then decreased slowly. The behavior performance showed clear decrement only after 6 hours. Our study showed the strong potential of fNIRS combined with divided visual attention protocol in driving fatigue degree monitoring. Our findings indicated the fNIRS-measured hemodynamic parameters were more sensitive than behavior performance evaluation.

Paper Details

Date Published: 10 March 2015
PDF: 7 pages
Proc. SPIE 9305, Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics II, 93052I (10 March 2015); doi: 10.1117/12.2081530
Show Author Affiliations
Ting Li, Univ. of Electronic Science and Technology of China (China)
Yue Zhao, Univ. of Electronic Science and Technology of China (China)
Yunlong Sun, Univ. of Electronic Science and Technology of China (China)
Yuan Gao, Univ. of Electronic Science and Technology of China (China)
Yu Su, Univ. of Electronic Science and Technology of China (China)
Yiyi Hetian, Univ. of Electronic Science and Technology of China (China)
Min Chen, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 9305:
Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics II
Henry Hirschberg; E. Duco Jansen; Samarendra K. Mohanty; Nitish V. Thakor; Qingming Luo; Steen J. Madsen, Editor(s)

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