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Functional near-infrared spectroscopy

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https://www.readbyqxmd.com/read/28916447/perception-of-caucasian-and-african-faces-in-5-to-9-month-old-caucasian-infants-a-functional-near-infrared-spectroscopy-study
#1
Susanna Timeo, Sabrina Brigadoi, Teresa Farroni
Race is an important perceptual cue for face perception. In adults, other-race faces are elaborated differently and remembered less well than own-race faces. Moreover, they show a different pattern of activation at the neural level. Developmental studies demonstrated that, during the first year of life, infants start to show the same behavioral pattern as adults in race perception. However, little is known about where and how in the brain other-race perception is elaborated in this population. The present study is the first to investigate the development of different neural responses to faces of different race in infants using functional near-infrared spectroscopy (fNIRS)...
September 12, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28915639/heptamethine-carbocyanine-dz-1-dye-for-near-infrared-fluorescence-imaging-of-hepatocellular-carcinoma
#2
Jiaze An, Ningning Zhao, Caiqin Zhang, Yong Zhao, Dengxu Tan, Ya Zhao, Bing Bai, Hai Zhang, Boyang Jason Wu, Changhong Shi
Near-infrared fluorescence (NIRF) dyes have recently emerged as promising tools for non-invasive imaging of different types of cancers. Here, we explored the potential utility of a NIRF DZ-1 dye, with dual imaging and tumour targeting functions, in hepatocellular carcinoma (HCC). We showed the preferential uptake of DZ-1 by HCC cells in vitro and in derived subcutaneous/orthotopic tumour xenografts, accompanied by a minimal effect on normal cells. DZ-1 simplified tumour growth profiling as well, since we were able to correlate NIRF signals with tumour volume and/or tumour-emitting luminescence in mice...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28914554/when-cooperation-goes-wrong-brain-and-behavioral-correlates-of-ineffective-joint-strategies-in-dyads
#3
Michela Balconi, Laura Gatti, Maria Elide Vanutelli
Human life is connoted by sophisticated interactions that involve not only single individuals, but larger social groups composed by members interacting each other. Cooperation secures a benefit to all the people engaged as well as important behaviors like helping, sharing, and acting prosocially. But what happens when the joint actions are not effective? In the present study we asked 24 participants paired in 12 dyads to cooperate during an attentional task in a way to synchronize their responses and obtain better outcomes...
September 15, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28914230/prefrontal-cortical-responses-in-children-with-prenatal-alcohol-related-neurodevelopmental-impairment-a-functional-near-infrared-spectroscopy-study
#4
Julie A Kable, Claire D Coles
OBJECTIVE: Disruption in the neural activation of the prefrontal cortex (PFC) in modulating arousal was explored in children with heavy prenatal alcohol exposure (PAE), who have known neurobehavioral impairment. METHODS: During a task that elicits frustration, functional near-infrared spectroscopy (fNIRS) was used to measure PFC activation, specifically levels of oxygenated (HBO) and deoxygenated (HBR) hemoglobin, in children with PAE (n=18) relative to typically developing Controls (n=12) and a Clinical Contrast group with other neurodevelopmental or behavioral problems (n=14)...
September 2, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28912697/brains-in-competition-improved-cognitive-performance-and-inter-brain-coupling-by-hyperscanning-paradigm-with-functional-near-infrared-spectroscopy
#5
Michela Balconi, Maria E Vanutelli
Hyperscanning brain paradigm was applied to competitive task for couples of subjects. Functional Near-Infrared Spectroscopy (fNIRS) and cognitive performance were considered to test inter-brain and cognitive strategy similarities between subjects (14 couples) during a joint-action. We supposed increased brain-to-brain coupling and improved cognitive outcomes due to joint-action and the competition. As supposed, the direct interaction between the subjects and the observed external feedback of their performance (an experimentally induced fictitious feedback) affected the cognitive performance with decreased Error Rates (ERs), and Response Times (RTs)...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28902182/gestational-age-dependent-relationship-between-cerebral-oxygen-extraction-and-blood-pressure
#6
Zachary A Vesoulis, Steve M Liao, Amit M Mathur
BackgroundPremature infants may lack mature cerebrovascular autoregulatory function and fail to adapt oxygen extraction to decreasing systemic perfusion.MethodsInfants ≤28 weeks of gestational age (GA) were recruited. Systemic oxygen saturation (SpO2), mean arterial blood pressure (MABP), and cerebral saturation (near-infrared spectroscopy, SctO2) were measured continuously over the first 72 h. Resulting data underwent error-processing. For each remaining 10 m window, the mean MABP and fractional tissue oxygen extraction (FTOE) were calculated...
September 13, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28894759/differential-efficiency-of-transcutaneous-electrical-nerve-stimulation-in-dominant-versus-nondominant-hands-in-fibromyalgia-placebo-controlled-functional-near-infrared-spectroscopy-study
#7
Aykut Eken, Murat Kara, Bora Baskak, Ayşegül Baltacı, Didem Gökçay
Using functional near-infrared spectroscopy (fNIRS), modulation of hemodynamic responses by transcutaneous electrical nerve stimulation (TENS) during delivery of nociceptive stimulation was investigated in fibromyalgia (FM) patients and healthy controls for both hands. Two experiments were conducted: (1) median nerve stimulation with TENS and (2) painful stimulation using electronic von Frey filaments with TENS/placebo TENS. Mean [Formula: see text] brain activity was compared across groups and conditions using factorial ANOVA...
January 2018: Neurophotonics
https://www.readbyqxmd.com/read/28892170/application-of-visible-near-infrared-spectroscopy-in-the-prediction-of-azodicarbonamide-in-wheat-flour
#8
Wenkai Che, Laijun Sun, Qian Zhang, Dan Zhang, Dandan Ye, Wenyi Tan, Lekai Wang, Changjun Dai
Azodicarbonamide is wildly used in flour industry as a flour gluten fortifier in many countries, but it was proved by some researches to be dangerous or unhealthy for people and not suitable to be added in flour. Applying a rapid, convenient, and noninvasive technique in food analytical procedure for the safety inspection has become an urgent need. This paper used Vis/NIR reflectance spectroscopy analysis technology, which is based on the physical property analysis to predict the concentration of azodicarbonamide in flour...
September 11, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28889923/social-risky-decision-making-reveals-gender-differences-in-the-tpj-a-hyperscanning-study-using-functional-near-infrared-spectroscopy
#9
Mingming Zhang, Tao Liu, Matthew Pelowski, Huibin Jia, Dongchuan Yu
Previous neuroscience studies have investigated neural correlates of risky decision-making in a single-brain frame during pseudo social (predominantly non face-to-face) contexts. To fully understand the risky decision-making behavior in more natural social interactions, the present study employed a functional near-infrared spectroscopy (fNIRS) hyperscanning technique to simultaneously measure pairs of participants' fronto-temporal activations in a face-to-face gambling card-game. The intra-brain results revealed that both those who identified as males and as females showed higher activations in their mPFC and in the inferior parts of the frontopolar area, as well as in the tempo-parietal junction (TPJ) in cases involving higher versus lower risk...
September 7, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28888977/emerging-technologies-for-the-non-invasive-characterization-of-physical-mechanical-properties-of-tablets
#10
REVIEW
Vivek S Dave, Hend I Shahin, Susanne R Youngren-Ortiz, Mahavir B Chougule, Rahul V Haware
The density, porosity, breaking force, viscoelastic properties, and the presence or absence of any structural defects or irregularities are important physical-mechanical quality attributes of popular solid dosage forms like tablets. The irregularities associated with these attributes may influence the drug product functionality. Thus, an accurate and efficient characterization of these properties is critical for successful development and manufacturing of a robust tablets. These properties are mainly analyzed and monitored with traditional pharmacopeial and non-pharmacopeial methods...
September 6, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28888891/investigating-the-role-of-temporal-lobe-activation-in-speech-perception-accuracy-with-normal-hearing-adults-an-event-related-fnirs-study
#11
Jessica Defenderfer, Anastasia Kerr-German, Mark Hedrick, Aaron T Buss
Functional near infrared spectroscopy (fNIRS) is a safe, non-invasive, relatively quiet imaging technique that is tolerant of movement artifact making it uniquely ideal for the assessment of hearing mechanisms. Previous research demonstrates the capacity for fNIRS to detect cortical changes to varying speech intelligibility, revealing a positive relationship between cortical activation amplitude and speech perception score. In the present study, we use an event-related design to investigate the hemodynamic response in the temporal lobe across different listening conditions...
September 6, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28885662/differential-diagnosis-of-alterations-in-arterial-flow-and-tissue-oxygenation-on-venoarterial-extracorporeal-membrane-oxygenation
#12
Anna Hofer, Sylvia Leitner, Michaela Kreuzer, Jens Meier
BACKGROUND: Venoarterial extracorporeal membrane oxygenation (VA-ECMO) may be life-saving in several clinical situations, but it is also one of the most invasive therapeutic procedures, with significant potential for life-threatening complications. Pulse pressure waves are typically very small or even absent at the onset of ECMO therapy, and will reappear with the improvement of cardiac function. A low pulse pressure may indicate low cardiac output due to heart failure during sustained ECMO support...
September 5, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28884781/novel-routes-to-electromagnetic-enhancement-and-its-characterisation-in-surface-and-tip-enhanced-raman-scattering
#13
P Dawson, D Frey, V Kalathingal, R Mehfuz, J Mitra
Quantitative understanding of the electromagnetic component in enhanced Raman spectroscopy is often difficult to achieve on account of the complex substrate structures utilised. We therefore turn to two structurally simple systems amenable to detailed modelling. The first is tip-enhanced Raman scattering under electron scanning tunnelling microscopy control (STM-TERS) where, appealing to understanding developed in the context of photon emission from STM, it is argued that the localised surface plasmon modes driving the Raman enhancement exist in the visible and near-infrared regime only by virtue of significant modification to the optical properties of the tip and sample metals (gold here)...
September 8, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28882917/effects-of-cerebral-near-infrared-spectroscopy-on-the-outcome-of-patients-undergoing-cardiac-surgery-a-systematic-review-of-randomised-trials
#14
Giuseppe Filiberto Serraino, Gavin J Murphy
OBJECTIVES: Goal-directed optimisation of cerebral oxygenation using near-infrared spectroscopy (NIRS) during cardiopulmonary bypass is widely used. We tested the hypotheses that the use of NIRS cerebral oximetry results in reductions in cerebral injury (neurocognitive function, serum biomarkers), injury to other organs including the heart and brain, transfusion rates, mortality and resource use. DESIGN: Systematic review and meta-analysis. SETTING: Tertiary cardiac surgery centres in North America, Europe and Asia...
September 7, 2017: BMJ Open
https://www.readbyqxmd.com/read/28878477/near-infrared-spectroscopy-can-reveal-increases-in-brain-activity-related-to-animal-assisted-therapy
#15
Yuka Morita, Fumio Ebara, Yoshimitsu Morita, Etsuo Horikawa
[Purpose] Previous studies have indicated that animal-assisted therapy can promote recovery of psychological, social, and physiological function in mental disorders. This study was designed as a pilot evaluation of the use of near-infrared spectroscopy to objectively identify changes in brain activity that could mediate the effect of animal-assisted therapy. [Subjects and Methods] The participants were 20 healthy students (10 males and 10 females; age 19-21 years) of the Faculty of Agriculture, Saga University...
August 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28878232/holographic-writing-of-ink-based-phase-conjugate-nanostructures-via-laser-ablation
#16
Muhammad Waqas Khalid, Rajib Ahmed, Ali K Yetisen, Bader AlQattan, Haider Butt
The optical phase conjugation (OPC) through photonic nanostructures in coherent optics involves the utilization of a nonlinear optical mechanism through real-time processing of electromagnetic fields. Their applications include spectroscopy, optical tomography, wavefront sensing, and imaging. The development of functional and personalized holographic devices in the visible and near-infrared spectrum can be improved by introducing cost-effective, rapid, and high-throughput fabrication techniques and low-cost recording media...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28875106/effect-of-the-fluorination-technique-on-the-surface-fluorination-patterning-of-double-walled-carbon-nanotubes
#17
Lyubov G Bulusheva, Yuliya V Fedoseeva, Emmanuel Flahaut, Jérémy Rio, Christopher P Ewels, Victor O Koroteev, Gregory Van Lier, Denis V Vyalikh, Alexander V Okotrub
Double-walled carbon nanotubes (DWCNTs) are fluorinated using (1) fluorine F2 at 200 °C, (2) gaseous BrF3 at room temperature, and (3) CF4 radio-frequency plasma functionalization. These have been comparatively studied using transmission electron microscopy and infrared, Raman, X-ray photoelectron, and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. A formation of covalent C-F bonds and a considerable reduction in the intensity of radial breathing modes from the outer shells of DWCNTs are observed for all samples...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28867998/functional-magnetic-resonance-imaging-and-functional-near-infrared-spectroscopy-insights-from-combined-recording-studies
#18
REVIEW
Vanessa Scarapicchia, Cassandra Brown, Chantel Mayo, Jodie R Gawryluk
Although blood oxygen level dependent (BOLD) functional magnetic resonance imaging (fMRI) is a widely available, non-invasive technique that offers excellent spatial resolution, it remains limited by practical constraints imposed by the scanner environment. More recently, functional near infrared spectroscopy (fNIRS) has emerged as an alternative hemodynamic-based approach that possesses a number of strengths where fMRI is limited, most notably in portability and higher tolerance for motion. To date, fNIRS has shown promise in its ability to shed light on the functioning of the human brain in populations and contexts previously inaccessible to fMRI...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28865755/the-relationship-between-the-superior-frontal-cortex-and-alpha-oscillation-in-a-flanker-task-simultaneous-recording-of-electroencephalogram-eeg-and-near-infrared-spectroscopy-nirs
#19
Kota Suzuki, Yasuko Okumura, Yosuke Kita, Yuhei Oi, Haruo Shinoda, Masumi Inagaki
Activity in the alpha band of the electroencephalogram (EEG) reflects functional inhibition of the cerebral cortex. The superior frontal cortex (SFC) is known to control alpha activity. Based on this relationship between SFC and alpha, we hypothesized that SFC controlled alpha mediates proactive control over interference. In this study, we examined the relationship between SFC and alpha in the flanker task by simultaneously recording EEG and near infrared spectroscopy (NIRS). Forty participants performed a flanker task with occasional (compatible 75%, incompatible 25%) and successive (incompatible 100%) conditions...
August 30, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28864837/near-infrared-spectroscopy-nirs-and-vagus-somatosensory-evoked-potentials-vsep-in-the-early-diagnosis-of-alzheimer-s-disease-rationale-design-methods-and-first-baseline-data-of-the-vogel-study
#20
Thomas Polak, Martin J Herrmann, Laura D Müller, Julia B M Zeller, Andrea Katzorke, Matthias Fischer, Fabian Spielmann, Erik Weinmann, Leif Hommers, Martin Lauer, Andreas J Fallgatter, Jürgen Deckert
Functional near-infrared spectroscopy (fNIRS) and vagus somatosensory evoked potentials (VSEP) show deviant patterns in subjects with Alzheimer's disease (AD) compared to healthy controls. We now aimed at testing the predictive value of these methods in the early diagnosis of AD. The Vogel study is a prospective, observational, long-term follow-up study with three time points of investigation within 6 years. Residents of the city of Würzburg born between 1936 and 1941 were recruited. Every participant underwent physical, psychiatric, and laboratory examinations, and performed an intense neuropsychological testing as well as VSEP and NIRS according to the published procedures...
September 1, 2017: Journal of Neural Transmission
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