Functional Near-Infrared Spectroscopy (fNIRS) in an Aerospace Environment: Challenges and Considerations

Geeseman, Joseph W.; Balters, Stephanie; Cotton, Olivia Fox; Kiehl, Zachary; Lucia, Lisa C.; Tenison, Caitlin

doi:10.3357/amhp.5723.2020

Cited by 5 publications

(2 citation statements)

References 5 publications

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“…Inorganic near infrared reflection pigments have the advantages of high reflectivity and good chemical stability, which are widely used in the coating fields of automobile, train and aircraft, ship hull and deck of shipbuilding industry, as well as the coating fields of tanks, warships, rockets and spacecraft of weapon and aerospace industry [1][2][3][4][5][6][7][8][9][10][11]. Barium hexaferrite (BaFe12O19) is a kind of high near infrared reflectance pigment with high coerce, large squareness ratio, large crystalline anisotropy, excellent chemical stability, high near infrared reflectivity, high catalytic activity, and large corrosion resistivity can be widely used in many fields including microwave communications, satellite communication, multi band microstrip antenna, microwave dark rooms, near infrared heat shielding coatings, next-generation battery systems, magnetic separation photocatalysts, permanent magnets and high density magnetic storage systems [12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on the Phase Structure, Optical and NIR Reflectivity of BaFe12O19 Nano-Pigments by the Traditional and Modified Polyacrylamide Gel Method

Wang

Chen

Gao

et al. 2021

JNanoR

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Barium hexaferrite (BaFe12O19) nano- pigment is a pigment with high near infrared reflection in the wavelength range of 1400-2500 nm. The BaFe12O19 nano- pigments were synthesized by the traditional and modified polyacrylamide gel method and characterized by thermogravimetric and differential scanning calorimetry (TG-DSC) analyses, X-ray powder diffraction (XRD), fourier transform infrared (FTIR), transmission electron microscopy (TEM), and UV-Visible spectrophotometer. The physicochemical properties of BaFe12O19 nanopigments are strongly dependent on the synthesis route. The introduction of carbon particles into the BaFe12O19 precursor accelerates the formation of BaFe12O19 phase, reduces its particle diameter and changes its color properties. The modified polyacrylamide gel method makes it possible to obtain a high efficient near infrared reflection BaFe12O19 nano- pigments with a solar reflectance SR>90%. The high near infrared reflection makes BaFe12O19 nano- pigments have potential applications in the field of heat shielding.

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Section: Introductionmentioning

confidence: 99%

A Comparative Study on the Phase Structure, Optical and NIR Reflectivity of BaFe12O19 Nano-Pigments by the Traditional and Modified Polyacrylamide Gel Method

Wang

Chen

Gao

et al. 2021

JNanoR

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“…Mental workload is related to the activity of the brain and central nervous system. Although ECG and eye movement data can effectively be used to evaluate pilots’ mental workload, they are not direct measures of neural activity in the brain and thus cannot be used to explain the relationship between mental workload and neural mechanisms ( 15 ). EEG is a relatively traditional method of measuring brain signals, and has high temporal resolution.…”

mentioning

confidence: 99%

Variation of Pilots’ Mental Workload Under Emergency Flight Conditions Induced by Different Equipment Failures: A Flight Simulator Study

Zhang

Yuan

Jiao

et al. 2023

Transportation Research Record: Journal of the Transportation R

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Pilots’ excessive mental workload could reduce their ability to perform concurrent tasks during emergency flights, which is one of the most critical aviation safety concerns. Several past efforts have attempted to investigate the underlying issues, but all had limited success owing to the challenge of collecting representative data under realistic operating conditions. This study aimed to address this challenge by conducting a flight simulator study involving a comparatively large number of participants, who were pilot cadets with flight experience, and using noninvasive functional near-infrared spectroscopy (fNIRS) to collect the pilots’ brain activity data. Pilots’ subjective ratings and brain activity records were collected over a total of 75 simulated flights under three subtask scenarios comprising different equipment failures. A statistical analysis was carried out on the subjective ratings and on the changes observed in the saturation of the oxyhemoglobin (ΔOxyHb) of individual fNIRS channels. The mental workload of the pilots was classified using a support vector machine hierarchical combination classifier, focusing on the question of whether it is feasible to classify pilots’ mental workload using brain activity signals (i.e., ΔOxyHb). The results suggested that the pilots’ mental workload levels were highly associated with the ΔOxyHb measures as well as with the activities of different brain regions, including the prefrontal-, motor-, and occipital cortex. The findings from this study could provide a reference for optimizing pilot training systems and improving pilot performance during emergency flight operations.

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Conflicting spatial representations impairs object tracking performance in an aerospace environment

Geeseman

Balters²

2022

International Journal of Human-Computer Studies

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Functional Near-Infrared Spectroscopy (fNIRS) in an Aerospace Environment: Challenges and Considerations

Cited by 5 publications

References 5 publications

A Comparative Study on the Phase Structure, Optical and NIR Reflectivity of BaFe<sub>12</sub>O<sub>19</sub> Nano-Pigments by the Traditional and Modified Polyacrylamide Gel Method

A Comparative Study on the Phase Structure, Optical and NIR Reflectivity of BaFe<sub>12</sub>O<sub>19</sub> Nano-Pigments by the Traditional and Modified Polyacrylamide Gel Method

Variation of Pilots’ Mental Workload Under Emergency Flight Conditions Induced by Different Equipment Failures: A Flight Simulator Study

Conflicting spatial representations impairs object tracking performance in an aerospace environment

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