The NIRS Brain AnalyzIR Toolbox

Algorithms, Год журнала: 2018, Номер 11(5), С. 73 - 73

Опубликована: Май 16, 2018

Functional near-infrared spectroscopy (fNIRS) is a noninvasive neuroimaging technique that uses low-levels of light (650–900 nm) to measure changes in cerebral blood volume and oxygenation. Over the last several decades, this has been utilized growing number functional resting-state brain studies. The lower operation cost, portability, versatility method make it an alternative methods such as magnetic resonance imaging for studies pediatric special populations without confining limitations supine motionless acquisition setup. However, analysis fNIRS data poses challenges stemming from unique physics technique, statistical properties data, diversity non-traditional experimental designs being due flexibility technology. For these reasons, specific technology must be developed. In paper, we introduce NIRS Brain AnalyzIR toolbox open-source Matlab-based package management, pre-processing, first- second-level (i.e., single subject group-level) analysis. Here, describe basic architectural format toolbox, which based on object-oriented programming paradigm. We also detail algorithms major components including analysis, probe registration, image reconstruction, region-of-interest statistics.

Язык: Английский

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Applications of Functional Near-Infrared Spectroscopy (fNIRS) Neuroimaging in Exercise–Cognition Science: A Systematic, Methodology-Focused Review

Journal of Clinical Medicine, Год журнала: 2018, Номер 7(12), С. 466 - 466

Опубликована: Ноя. 22, 2018

For cognitive processes to function well, it is essential that the brain optimally supplied with oxygen and blood. In recent years, evidence has emerged suggesting cerebral oxygenation hemodynamics can be modified physical activity. To better understand relationship between oxygenation/hemodynamics, activity, cognition, application of state-of-the art neuroimaging tools essential. Functional near-infrared spectroscopy (fNIRS) such a tool especially suitable investigate effects activity/exercises on due its capability quantify changes in concentration oxygenated hemoglobin (oxyHb) deoxygenated (deoxyHb) non-invasively human brain. However, currently there no clear standardized procedure regarding application, data processing, analysis fNIRS, large heterogeneity how fNIRS applied field exercise–cognition science. Therefore, this review aims summarize current methodological knowledge about studies measuring cortical hemodynamic responses during testing (i) prior after different activities interventions, (ii) cross-sectional accounting for fitness level their participants. Based methodology 35 as relevant considered publications, we outline recommendations future

Язык: Английский

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Best practices for fNIRS publications

Neurophotonics, Год журнала: 2021, Номер 8(01)

Опубликована: Янв. 7, 2021

The application of functional near-infrared spectroscopy (fNIRS) in the neurosciences has been expanding over last 40 years. Today, it is addressing a wide range applications within different populations and utilizes great variety experimental paradigms. With rapid growth diversification research methods, some inconsistencies are appearing way which methods presented, can make interpretation replication studies unnecessarily challenging. Society for Functional Near-Infrared Spectroscopy thus motivated to organize representative (but not exhaustive) group leaders field build consensus on best practices describing utilized fNIRS studies. Our paper designed provide guidelines help enhance reliability, repeatability, traceability reported encourage throughout community. A checklist provided guide authors preparation their manuscripts assist reviewers when evaluating papers.

Язык: Английский

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Temporal Derivative Distribution Repair (TDDR): A motion correction method for fNIRS

NeuroImage, Год журнала: 2018, Номер 184, С. 171 - 179

Опубликована: Сен. 11, 2018

Язык: Английский

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fNIRS Optodes’ Location Decider (fOLD): a toolbox for probe arrangement guided by brain regions-of-interest

Scientific Reports, Год журнала: 2018, Номер 8(1)

Опубликована: Фев. 14, 2018

The employment of functional near-infrared spectroscopy (fNIRS) as a method brain imaging has increased over the last few years due to its portability, low-cost and robustness subject movement. Experiments with fNIRS are designed in face limited number sources detectors (optodes) be positioned on selected portion(s) scalp. optodes locations represent an expectation assessing cortical regions relevant experiment's hypothesis. However, this translation process remains challenge for experimental design. In present study, we propose approach that automatically decides location from set predefined positions aim maximizing anatomical specificity regions-of-interest. implemented is based photon transport simulations two head atlases. results compiled into publicly available "fNIRS Optodes' Location Decider" (fOLD). This toolbox first-order bring achieved advancements parcellation methods meta-analyses magnetic resonance more precisely guide selection optode experiments.

Язык: Английский

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A Review on the Use of Wearable Functional Near‐Infrared Spectroscopy in Naturalistic Environments

Japanese Psychological Research, Год журнала: 2018, Номер 60(4), С. 347 - 373

Опубликована: Июль 19, 2018

Abstract The development of novel miniaturized wireless and wearable functional near‐infrared spectroscopy (fNIRS) devices has paved the way for new brain imaging that could revolutionize cognitive research fields. Over past few decades, several studies have been conducted with conventional fNIRS systems demonstrated suitability this technology a wide variety populations applications, to investigate both healthy diseased brain. However, what makes even more appealing is its capability allow measurements in everyday‐life scenarios are not possible other gold‐standard neuroimaging modalities, such as magnetic resonance imaging. This huge impact on we explore neural bases mechanisms underpinning human functioning. aim review provide an overview naturalistic settings field neuroscience. In addition, present challenges associated use unrestrained contexts, discussing solutions will accurate inference activity. Finally, future perspectives neuroscience believe would benefit most from study devices.

Язык: Английский

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Functional Near Infrared Spectroscopy: Enabling routine functional brain imaging

Current Opinion in Biomedical Engineering, Год журнала: 2017, Номер 4, С. 78 - 86

Опубликована: Окт. 12, 2017

Язык: Английский

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Optical imaging and spectroscopy for the study of the human brain: status report

Neurophotonics, Год журнала: 2022, Номер 9(S2)

Опубликована: Авг. 30, 2022

This report is the second part of a comprehensive two-part series aimed at reviewing an extensive and diverse toolkit novel methods to explore brain health function. While first focused on neurophotonic tools mostly applicable animal studies, here, we highlight optical spectroscopy imaging relevant noninvasive human studies. We outline current state-of-the-art technologies software advances, most recent impact these neuroscience clinical applications, identify areas where innovation needed, provide outlook for future directions.

Язык: Английский

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Signal Processing in Functional Near-Infrared Spectroscopy (fNIRS): Methodological Differences Lead to Different Statistical Results

Frontiers in Human Neuroscience, Год журнала: 2018, Номер 11

Опубликована: Янв. 8, 2018

Even though research in the field of functional near-infrared spectroscopy (fNIRS) is being conducted for more than 20 years, a consensus on signal processing methods still lacking. A significant knowledge gap exists between established researchers and those newly entering field. One major issue regularly observed publications from new this neglect possible contamination by hemodynamic changes unrelated to neurovascular coupling (i.e. scalp blood flow systemic flow). This might be due fact that these use with tools provided manufacturers their devices without an advanced understanding performed steps. The aim present study was investigate how different approaches (including excluding partially correct contamination) affect results typical neuroimaging fNIRS. In particular, we evaluated one standard method commercial company compared it three customized investigated influence chosen statistical outcome clinical data set (task-evoked motor cortex activity). No short-channels were used therefore two types multi-channel corrections based multiple long-channels applied. choice had considerable study. While ignored fNIRS signals task-evoked physiological noise yielded several responses over whole head, significance findings disappeared when accounting using regression. We conclude that, lacking possibility applying multi-distance measurements, adoption confounding effect, yield realistic results. Furthermore, do not recommend as having every step.

Язык: Английский

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Adaptive benefit of cross-modal plasticity following cochlear implantation in deaf adults

Proceedings of the National Academy of Sciences, Год журнала: 2017, Номер 114(38), С. 10256 - 10261

Опубликована: Авг. 14, 2017

Significance Following sensory deprivation, the brain regions can become colonized by other intact modalities. In deaf individuals, evidence suggests that visual language recruits auditory and may limit hearing restoration with a cochlear implant. This suggestion underpins current rehabilitative recommendations individuals undergoing implantation should avoid using language. However, here we show opposite: Recruitment of speech after is associated better understanding adaptive benefits communication because serve to optimize, rather than hinder, following implantation. These findings have implications for both neuroscientific theory clinical rehabilitation implant patients worldwide.

Язык: Английский

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