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Functional near-infrared spectroscopy

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https://www.readbyqxmd.com/read/28526867/aberrant-functional-connectivity-in-depression-as-an-index-of-state-and-trait-rumination
#1
David Rosenbaum, Alina Haipt, Kristina Fuhr, Florian B Haeussinger, Florian G Metzger, Hans-Christoph Nuerk, Andreas J Fallgatter, Anil Batra, Ann-Christine Ehlis
Depression has been shown to be related to a variety of aberrant brain functions and structures. Particularly the investigation of alterations in functional connectivity (FC) in major depressive disorder (MDD) has been a promising endeavor, since a better understanding of pathological brain networks may foster our understanding of the disease. However, the underling mechanisms of aberrant FC in MDD are largely unclear. Using functional near-infrared spectroscopy (fNIRS) we investigated FC in the cortical parts of the default mode network (DMN) during resting-state in patients with current MDD...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28525272/direct-synthesis-of-an-unprecedented-stable-radical-of-nickel-ii-3-5-bis-dimedonyl-azadiisoindomethene-with-strong-and-narrow-near-infrared-absorption-at-%C3%AE-%C3%A2-1000-nm
#2
Elena A Makarova, Yuriy V Zatsikha, Kelly M E Newman, Vinod K Paidi, Valeria A Beletsky, Johan van Lierop, Evgeny A Lukyanets, Victor N Nemykin
An unprecedented stable neutral radical nickel(II) complex of 3,5-bis(dimedonyl)azadiisoindomethene (1) was prepared by the direct reaction between 1,3-diiminoisoindoline and dimedone. A new radical complex 1 has an intense and narrow absorption at 1008 nm and can be reduced to a less stable anionic [1](-) with a typical aza(dibenzo)boron dipyrromethene (aza-BODIPY) UV-vis spectrum. Complex 1, along with two other colored condensation reaction products 2 and 3, was characterized by spectroscopy and X-ray crystallography, while the paramagnetic nature of 1 was probed by EPR and SQUID methods...
May 19, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28523228/resting-state-and-personality-component-bis-bas-predict-the-brain-activity-eeg-and-fnirs-measure-in-response-to-emotional-cues
#3
Michela Balconi, Maria E Vanutelli, Elisabetta Grippa
INTRODUCTION: The present study explored the role of resting state and personality component (BIS/BAS measure) on prefrontal cortical responsiveness to emotional cues. Indeed, we supposed that lateralized resting activity (right vs. left) and approach (BAS) versus avoidance (BIS) attitude may explain the successive emotional processing within the prefrontal cortex (PFC) based on the stimulus valence (positive and negative emotional cues). METHODS: Hemodynamic (functional near-infrared spectroscopy, fNIRS) and electroencephalographic (EEG) measures were considered...
May 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28516424/differing-developmental-trajectories-in-heart-rate-responses-to-speech-stimuli-in-infants-at-high-and-low-risk-for-autism-spectrum-disorder
#4
Katherine L Perdue, Laura A Edwards, Helen Tager-Flusberg, Charles A Nelson
We investigated heart rate (HR) in infants at 3, 6, 9, and 12 months of age, at high (HRA) and low (LRC) familial risk for ASD, to identify potential endophenotypes of ASD risk related to attentional responses. HR was extracted from functional near-infrared spectroscopy recordings while infants listened to speech stimuli. Longitudinal analysis revealed that HRA infants and males generally had lower baseline HR than LRC infants and females. HRA infants showed decreased HR responses to early trials over development, while LRC infants showed increased responses...
May 17, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28507595/differential-therapeutic-effects-of-atomoxetine-and-methylphenidate-in-childhood-attention-deficit-hyperactivity-disorder-as-measured-by-near-infrared-spectroscopy
#5
Yoko Nakanishi, Toyosaku Ota, Junzo Iida, Kazuhiko Yamamuro, Naoko Kishimoto, Kosuke Okazaki, Toshifumi Kishimoto
BACKGROUND: The stimulant methylphenidate (MPH) and the nonstimulant atomoxetine (ATX) are the most commonly-prescribed pharmacological treatments for attention deficit/hyperactivity disorder (ADHD). However, the drug-specific mechanism of action on brain function in ADHD patients is not well known. This study examined differences in prefrontal hemodynamic activity between MPH and ATX in children with ADHD as measured by near-infrared spectroscopy (NIRS) using the Stroop color-word task...
2017: Child and Adolescent Psychiatry and Mental Health
https://www.readbyqxmd.com/read/28506157/motor-and-sensory-cortical-changes-after-contralateral-cervical-seventh-nerve-root-cc7-transfer-in-patients-with-brachial-plexus-injuries
#6
Ryosuke Kakinoki, Scott F M Duncan, Ryosuke Ikeguchi, Souichi Ohta, Manabu Nankaku, Hiroshi Sakai, Takashi Noguchi, Yukitoshi Kaizawa, Masao Akagi
BACKGROUND: Previous animal studies demonstrated that the sensory and motor functions in ipsilesional upper limbs that had been reconstructed by CC7 transfer eventually associated with the contralesional brain cortices that had originally mediated the functions of the ipsilesional upper limbs before brachial plexus injury (BPI). Our hypothesis was that the same findings would be seen in humans. METHODS: Four patients with total BPI treated with CC7 transfer were included...
June 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28504643/exploiting-neurovascular-coupling-a-bayesian-sequential-monte-carlo-approach-applied-to-simulated-eeg-fnirs-data
#7
Pierpaolo Croce, Filippo Zappasodi, Arcangelo Merla, Antonio Chiarelli
OBJECTIVE: Electrical and hemodynamic brain activity are linked through the neurovascular coupling process and they can be simultaneously measured through integration of Electroencephalography (EEG) and functional Near-Infrared Spectroscopy (fNIRS). Thanks to the lack of electro-optical interference, the two procedures can be easily combined and, whereas EEG provides electrophysiological information, fNIRS can provide measurements of two hemodynamic variables, such as oxygenated and deoxygenated hemoglobin...
May 15, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28499897/reduced-language-lateralization-in-first-episode-schizophrenia-a-near-infrared-spectroscopy-study
#8
Po-Han Chou, Wei-Hao Lin, Wang-Rung Li, Chih-Mao Huang, Chia-Wei Sun
BACKGROUND: Diminished functional lateralization in language-related areas is found in chronic schizophrenia (SZ). However, whether reduced lateralization exists at the early stage of SZ remains unclear. The present study aimed to investigate language lateralization in first episode schizophrenia (FES) using near infrared spectroscopy (NIRS) during a letter version of verbal fluency test (VFT). METHODS: A total of 28 FES patients and 33 healthy controls (HCs) underwent NIRS while performing a VFT...
May 9, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28499896/decreased-prefrontal-brain-activation-during-verbal-fluency-task-in-patients-with-somatoform-pain-disorder-an-exploratory-multi-channel-near-infrared-spectroscopy-study
#9
Xiajin Ren, Jinlong Lu, Xiaomin Liu, Chenyu Shen, Xiaoqian Zhang, Xiangyun Ma, Jingjing Sun, Gaoxiang Sun, Kun Feng, Bo Xu, Pozi Liu
BACKGROUND: Pain is a common phenomenon. Patients with somatoform pain disorder (SPD) suffer from lasting chronic pain which may cause cognitive impairment. The dysfunction of prefrontal cortex (PFC) may be involved in pain-induced cognition impairment, which is the most important part in regulating of cognitive function. Multi-channel near-infrared spectroscopy (NIRS) is a noninvasive and low-cost functional neuroimaging technique being used to detect the prefrontal cortex activation during cognitive tasks to demonstrate the relationship between PFC dysfunction and cognition impairment in SPD patients...
May 9, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28496411/calf-compression-sleeves-change-biomechanics-but-not-performance-and-physiological-responses-in-trail-running
#10
Hugo A Kerhervé, Pierre Samozino, Fabrice Descombe, Matthieu Pinay, Guillaume Y Millet, Marion Pasqualini, Thomas Rupp
Introduction: The aim of this study was to determine whether calf compression sleeves (CS) affects physiological and biomechanical parameters, exercise performance, and perceived sensations of muscle fatigue, pain and soreness during prolonged (~2 h 30 min) outdoor trail running. Methods: Fourteen healthy trained males took part in a randomized, cross-over study consisting in two identical 24-km trail running sessions (each including one bout of running at constant rate on moderately flat terrain, and one period of all-out running on hilly terrain) wearing either degressive CS (23 ± 2 mmHg) or control sleeves (CON, <4 mmHg)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28492852/characterization-and-correction-of-the-false-discovery-rates-in-resting-state-connectivity-using-functional-near-infrared-spectroscopy
#11
Hendrik Santosa, Ardalan Aarabi, Susan B Perlman, Theodore J Huppert
No abstract text is available yet for this article.
May 1, 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28490806/quantification-of-blood-brain-barrier-permeability-by-dynamic-contrast-enhanced-nirs
#12
Daniel Milej, Androu Abdalmalak, Lise Desjardins, Hassaan Ahmed, Ting-Yim Lee, Mamadou Diop, Keith St Lawrence
The blood-brain barrier (BBB) is integral to maintaining a suitable microenvironment for neurons to function properly. Despite its importance, there are no bedside methods of assessing BBB disruption to help guide management of critical-care patients. The aim of this study was to demonstrate that dynamic contrast-enhanced (DCE) near-infrared spectroscopy (NIRS) can quantify the permeability surface-area product (PS) of the BBB. Experiments were conducted in rats in which the BBB was opened by image-guided focused ultrasound...
May 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28486234/low-plasma-protein-levels-at-birth-are-associated-with-poor-cardiovascular-adaptation-and-serious-adverse-outcome-in-infants-with-gestational-age-32-weeks-the-proh%C3%A3-mie-study
#13
Francesco Bonsante, Duksha Ramful, Sylvain Samperiz, Sandrine Daniel, Anais Godeluck, Pierre-Yves Robillard, Karim Jamal-Bey, Jean-Bernard Gouyon, Christine Binquet, Silvia Iacobelli
BACKGROUND: Retrospective studies suggest that early hypoproteinemia has prognostic value for adverse outcome in preemies, but the underlying pathophysiology is unknown. We hypothesized that the prognostic relevance of hypoproteinemia could be related to its association with impaired cardiovascular function and organ perfusion during transition. OBJECTIVES: To describe the plasma protein status and the measures of cardiovascular function according to the outcome in infants <32 weeks' gestation...
May 10, 2017: Neonatology
https://www.readbyqxmd.com/read/28476662/a-novel-glm-based-method-for-the-automatic-identification-of-functional-events-aide-in-fnirs-data-recorded-in-naturalistic-environments
#14
Paola Pinti, Arcangelo Merla, Clarisse Aichelburg, Frida Lind, Sarah Power, Elizabeth Swingler, Antonia Hamilton, Sam Gilbert, Paul W Burgess, Ilias Tachtsidis
Recent technological advances have allowed the development of portable functional Near-Infrared Spectroscopy (fNIRS) devices that can be used to perform neuroimaging in the real-world. However, as real-world experiments are designed to mimic everyday life situations, the identification of event onsets can be extremely challenging and time-consuming. Here, we present a novel analysis method based on the general linear model (GLM) least square fit analysis for the Automatic IDentification of functional Events (or AIDE) directly from real-world fNIRS neuroimaging data...
May 2, 2017: NeuroImage
https://www.readbyqxmd.com/read/28474293/increased-arithmetic-complexity-is-associated-with-domain-general-but-not-domain-specific-magnitude-processing-in-children-a-simultaneous-fnirs-eeg-study
#15
Mojtaba Soltanlou, Christina Artemenko, Thomas Dresler, Florian B Haeussinger, Andreas J Fallgatter, Ann-Christine Ehlis, Hans-Christoph Nuerk
The investigation of the neural underpinnings of increased arithmetic complexity in children is essential for developing educational and therapeutic approaches and might provide novel measures to assess the effects of interventions. Although a few studies in adults and children have revealed the activation of bilateral brain regions during more complex calculations, little is known about children. We investigated 24 children undergoing one-digit and two-digit multiplication tasks while simultaneously recording functional near-infrared spectroscopy (fNIRS) and electroencephalography (EEG) data...
May 4, 2017: Cognitive, Affective & Behavioral Neuroscience
https://www.readbyqxmd.com/read/28473763/the-optimal-speed-for-cortical-activation-of-passive-wrist-movements-performed-by-a-rehabilitation-robot-a-functional-nirs-study
#16
Sung Jin Bae, Sung Ho Jang, Jeong Pyo Seo, Pyung Hun Chang
Objectives: To advance development of rehabilitation robots, the conditions to induce appropriate brain activation during rehabilitation performed by robots should be optimized, based on the concept of brain plasticity. In this study, we examined differences in cortical activation according to the speed of passive wrist movements performed by a rehabilitation robot. Methods: Twenty three normal subjects participated in this study. Passive movements of the right wrist were performed by the wrist rehabilitation robot at three different speeds: 0...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28471441/how-to-assess-hemodynamic-status-in-very-preterm-newborns-in-the-first-week-of-life
#17
G Escourrou, L Renesme, E Zana, A Rideau, M O Marcoux, E Lopez, G Gascoin, P Kuhn, P Tourneux, I Guellec, C Flamant
BACKGROUND: Assessing hemodynamic status in preterm newborns is an essential task, as many studies have shown increased morbidity when hemodynamic parameters are abnormal. Although oscillometric monitoring of arterial blood pressure (BP) is widely used due to its simplicity and lack of side effects, these values are not always correlated with microcirculation and oxygen delivery. OBJECTIVES: This review focuses on different tools for the assessment of hemodynamic status in preterm newborns...
May 4, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28466026/low-resolution-mapping-of-the-effective-attenuation-coefficient-of-the-human-head-a-multidistance-approach-applied-to-high-density-optical-recordings
#18
Antonio M Chiarelli, Edward L Maclin, Kathy A Low, Sergio Fantini, Monica Fabiani, Gabriele Gratton
Near infrared (NIR) light has been widely used for measuring changes in hemoglobin concentration in the human brain (functional NIR spectroscopy, fNIRS). fNIRS is based on the differential measurement and estimation of absorption perturbations, which, in turn, are based on correctly estimating the absolute parameters of light propagation. To do so, it is essential to accurately characterize the baseline optical properties of tissue (absorption and reduced scattering coefficients). However, because of the diffusive properties of the medium, separate determination of absorption and scattering across the head is challenging...
April 2017: Neurophotonics
https://www.readbyqxmd.com/read/28465584/non-invasive-measurement-of-a-metabolic-marker-of-infant-brain-function
#19
Maheen F Siddiqui, Sarah Lloyd-Fox, Pardis Kaynezhad, Ilias Tachtsidis, Mark H Johnson, Clare E Elwell
While near-infrared spectroscopy (NIRS) haemodynamic measures have proven to be vastly useful in investigating human brain development, the haemodynamic response function (HRF) in infants is not yet fully understood. NIRS measurements of the oxidation state of mitochondrial enzyme cytochrome-c-oxidase (oxCCO) have the potential to yield key information about cellular oxygen utilisation and therefore energy metabolism. We used a broadband NIRS system to measure changes in oxCCO, in addition to haemodynamic changes, during functional activation in a group of 33 typically developing infants aged between 4 and 6 months...
May 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28456497/smoking-before-isometric-exercise-amplifies-myocardial-stress-and-dysregulates-baroreceptor-sensitivity-and-cerebral-oxygenation
#20
Panagiota Anyfanti, Eleftheria Triantafyllidou, Stavros Papadopoulos, Areti Triantafyllou, Michalis G Nikolaidis, Antonios Kyparos, Ioannis S Vrabas, Stella Douma, Andreas Zafeiridis, Konstantina Dipla
This crossover study examined whether acute cardiovascular responses, baroreceptor sensitivity (BRS), and brain oxygenation during isometric exercise are altered after cigarette smoking. Twelve young, habitual smokers randomly performed a smoking and a control protocol, during which participants smoked one cigarette (0.9 mg nicotine) or a sham cigarette, before exercise. Testing involved baseline, a 5-minute smoking, a 10-minute post-smoking rest, 3-minute handgrip exercise (30% maximum voluntary contraction), and recovery...
April 14, 2017: Journal of the American Society of Hypertension: JASH
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