Effects of Varying Gravity Levels on fNIRS Headgear Performance and Signal Recovery

This paper reviews the effects of varying gravitational levels on functional Near-Infrared Spectroscopy (fNIRS) headgear. The fNIRS systems quantify neural activations in the cortex by measuring hemoglobin concentration changes via optical intensity. Such activation measurement allows for the detect...

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Bibliographic Details
Published inNASA Center for AeroSpace Information (CASI). Conference Proceedings
Main Authors Mackey, Jeffrey R, Harrivel, Angela R, Adamovsky, Grigory, Lewandowski, Beth E, Gotti, Daniel J, Tin, Padetha, Floyd, Bertram M
Format Conference Proceeding
LanguageEnglish
Published Hampton NASA/Langley Research Center 19.08.2013
Subjects
Aerospace environments
Aerospace safety
Air safety
Coupling
Gravitational effects
Headgear
Hemoglobin
Human performance
Infrared spectra
Medical imaging
Near infrared radiation
Pilots
Signal reconstruction
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Summary:This paper reviews the effects of varying gravitational levels on functional Near-Infrared Spectroscopy (fNIRS) headgear. The fNIRS systems quantify neural activations in the cortex by measuring hemoglobin concentration changes via optical intensity. Such activation measurement allows for the detection of cognitive state, which can be important for emotional stability, human performance and vigilance optimization, and the detection of hazardous operator state. The technique depends on coupling between the fNIRS probe and users skin. Such coupling may be highly susceptible to motion if probe-containing headgear designs are not adequately tested. The lack of reliable and self-applicable headgear robust to the influence of motion artifact currently inhibits its operational use in aerospace environments. Both NASAs Aviation Safety and Human Research Programs are interested in this technology as a method of monitoring cognitive state of pilots and crew.