Noninvasive Tissue Blood Oxygenation Measurement Based on Near Infrared Spectroscopy (NIRS)

Cao, N.; Gao, Tianxin

doi:10.1109/icbbe.2009.5163118

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…

and

denote the molar absorption coefficients of the HbO and HbR, respectively, and the variables

and

denote the variation of the NIR light intensity at 2 wavelengths. Based on Equation (1) above [ 22 , 23 ], the amount of change in the concentration of HbO and HbR, and consequently the concentration of oxyhemoglobin, can be calculated by measuring the change in NIR light intensity at 2 wavelengths,

and

.…”

Section: Methodsmentioning

confidence: 99%

Study of Motion Sickness Model Based on fNIRS Multiband Features during Car Rides

2023

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Motion sickness is a common physiological discomfort phenomenon during car rides. In this paper, the functional near-infrared spectroscopy (fNIRS) technique was used in real-world vehicle testing. The fNIRS technique was utilized to model the relationship between changes in blood oxygenation levels in the prefrontal cortex of passengers and motion sickness symptoms under different motion conditions. To enhance the accuracy of motion sickness classification, the study utilized principal component analysis (PCA) to extract the most significant features from the test data. Wavelet decomposition was used to extract the power spectrum entropy (PSE) features of five frequency bands highly related to motion sickness. The correlation between motion sickness and cerebral blood oxygen levels was modeled by a 6-point scale calibration for the subjective evaluation of the degree of passenger motion sickness. A support vector machine (SVM) was used to build a motion sickness classification model, achieving an accuracy of 87.3% with the 78 sets of data. However, individual analysis of the 13 subjects showed a varying range of accuracy from 50% to 100%, suggesting the presence of individual differences in the relationship between cerebral blood oxygen levels and motion sickness symptoms. Thus, the results demonstrated that the magnitude of motion sickness during the ride was closely related to the change in the PSE of the five frequency bands of cerebral prefrontal blood oxygen, but further studies are needed to investigate individual variability.

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“…

and

denote the molar absorption coefficients of the HbO and HbR, respectively, and the variables

and

.…”

Section: Methodsmentioning

confidence: 99%

Study of Motion Sickness Model Based on fNIRS Multiband Features during Car Rides

2023

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“…To that end, rapid spectroscopy methods such as near infrared (Alamprese et al., 2016; Ding & Xu, 2000; Leng et al., 2020; Rohman et al., 2011), mid‐infrared (Al‐Jowder et al., 2002), Raman spectroscopy (Boyacı et al., 2014), multispectral image (Ropodi et al., 2017; Ropodi et al., 2015), hyperspectral (Chen et al., 2018; Jiang et al., 2019; Kamruzzaman et al., 2016; Kamruzzaman et al., 2015; Zhao et al., 2019), and combination of UV‐visible, near infrared, and mid‐infrared spectroscopy (Alamprese et al., 2013) have been utilized for determination of beef adulterated with other meats. However, for homogeneous biological tissues, NIRS using continuous wave can be used to detect the signal of the deep position is only approximate 14 mm (CAO et al., 2006). The limitation of measuring depth may be the most significant barrier to the practical application of spectral techniques to detect meat adulteration.…”

Section: Introductionmentioning

confidence: 99%

Artificial bionic taste sensors coupled with chemometrics for rapid detection of beef adulteration

Han

Aheto

et al. 2021

Food Science & Nutrition

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Meat and meat products are popular food commodities around the world due to their high nutritional value and unique flavor. The high demand for meat and meat products makes them an appealing target for adulteration by dishonest traders for financial gains. Meat adulteration has a long history and is still a serious problem around the world, despite the fact that it is prohibited by various national and international laws. For several years, beef has been targeted for adulteration with low-price meats such as chicken, duck and pork in order to increase financial return, particularly minced beef products (Shi et al., 2019). Such beef adulteration not only constitutes consumer fraud and commercial malpractice, but it also raises concerns for people who are allergic to specific meat species or have

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Advances in cost-effective integrated spectrometers

et al. 2022

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The proliferation of Internet-of-Things has promoted a wide variety of emerging applications that require compact, lightweight, and low-cost optical spectrometers. While substantial progresses have been made in the miniaturization of spectrometers, most of them are with a major focus on the technical side but tend to feature a lower technology readiness level for manufacturability. More importantly, in spite of the advancement in miniaturized spectrometers, their performance and the metrics of real-life applications have seldomly been connected but are highly important. This review paper shows the market trend for chip-scale spectrometers and analyzes the key metrics that are required to adopt miniaturized spectrometers in real-life applications. Recent progress addressing the challenges of miniaturization of spectrometers is summarized, paying a special attention to the CMOS-compatible fabrication platform that shows a clear pathway to massive production. Insights for ways forward are also presented.

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Noninvasive Tissue Blood Oxygenation Measurement Based on Near Infrared Spectroscopy (NIRS)

Cited by 3 publications

References 9 publications

Study of Motion Sickness Model Based on fNIRS Multiband Features during Car Rides

Study of Motion Sickness Model Based on fNIRS Multiband Features during Car Rides

Artificial bionic taste sensors coupled with chemometrics for rapid detection of beef adulteration

Advances in cost-effective integrated spectrometers

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