Interdisciplinary views of fNIRS: Current advancements, equity challenges, and an agenda for future needs of a diverse fNIRS research community

Frontiers in Integrative Neuroscience, Journal Year: 2023, Volume and Issue: 17

Published: Feb. 27, 2023

Functional Near-Infrared Spectroscopy (fNIRS) is an innovative and promising neuroimaging modality for studying brain activity in real-world environments. While fNIRS has seen rapid advancements hardware, software, research applications since its emergence nearly 30 years ago, limitations still exist regarding all three areas, where existing practices contribute to greater bias within the neuroscience community. We spotlight through lens of different end-application users, including unique perspective a manufacturer, report challenges using this technology across several disciplines populations. Through review domains utilized, we identify address presence bias, specifically due restraints current technology, limited diversity among sample populations, societal prejudice that infiltrates today's research. Finally, provide resources minimizing application agenda future use equitable, diverse, inclusive.

Language: Английский

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Optimizing spatial specificity and signal quality in fNIRS: an overview of potential challenges and possible options for improving the reliability of real-time applications

Frontiers in Neuroergonomics, Journal Year: 2024, Volume and Issue: 5

Published: June 5, 2024

The optical brain imaging method functional near-infrared spectroscopy (fNIRS) is a promising tool for real-time applications such as neurofeedback and brain-computer interfaces. Its combination of spatial specificity mobility makes it particularly attractive clinical use, both at the bedside in patients' homes. Despite these advantages, optimizing fNIRS use requires careful attention to two key aspects: ensuring good maintaining high signal quality. While detects superficial cortical regions, consistently reliably targeting specific regions interest can be challenging, studies that require repeated measurements. Variations cap placement coupled with limited anatomical information may further reduce this accuracy. Furthermore, important maintain quality contexts ensure they reflect true underlying activity. However, signals are susceptible contamination by cerebral extracerebral systemic noise well motion artifacts. Insufficient preprocessing therefore cause system run on instead aim review article help advance progress fNIRS-based applications. It highlights potential challenges improving quality, discusses possible options overcome challenges, addresses considerations relevant By addressing topics, aims improve planning execution future studies, thereby increasing their reliability repeatability.

Language: Английский

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Mobile fNIRS for exploring inter-brain synchrony across generations and time

Frontiers in Neuroergonomics, Journal Year: 2024, Volume and Issue: 4

Published: Jan. 2, 2024

While still relatively rare, longitudinal hyperscanning studies are exceptionally valuable for documenting changes in inter-brain synchrony, which may turn underpin how behaviors develop and evolve social settings. The generalizability ecological validity of this experimental approach hinges on the selected imaging technique being mobile–a requirement met by functional near-infrared spectroscopy (fNIRS). fNIRS has most frequently been used to examine development synchrony behavior child-parent dyads. In position paper, we contend that dedicating attention intergenerational stands benefit fields cognitive neuroscience more broadly. We argue is particularly relevant understanding neural mechanisms underpinning dynamics, potentially benchmarking progress psychological interventions, many situated contexts. line with our position, highlight areas research stand be enhanced mobile devices, describe challenges arise from measuring across generations real world, offer potential solutions.

Language: Английский

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Robust semi-supervised extraction of information using functional near-infrared spectroscopy for diagnosing depression

Biomedical Signal Processing and Control, Journal Year: 2025, Volume and Issue: 105, P. 107571 - 107571

Published: Feb. 8, 2025

Language: Английский

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Assessment of cortical activity, functional connectivity, and neuroplasticity in cerebral palsy using functional near‐infrared spectroscopy: A scoping review

Developmental Medicine & Child Neurology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Abstract Aim To map and critically appraise the literature on feasibility current use of functional near‐infrared spectroscopy (fNIRS) to assess cortical activity, connectivity, neuroplasticity in individuals with cerebral palsy (CP). Method A scoping review methodology was prospectively registered reported following Preferred Reporting Items for Systematic Meta‐Analysis Extension Scoping Reviews (PRISMA‐ScR) guidelines. systematic search conducted four databases. Empirical studies using fNIRS neural or CP aged 3 years older were included. Results Sixteen met inclusion criteria. Individuals (age range = 3–43 years; 70% unilateral CP) underwent fNIRS‐based assessment task‐evoked activity (studies [ n ] 15) and/or resting‐state connectivity ( 3). Preliminary observations suggest greater magnitude, extent, ipsilateral hemispheric lateralization sensorimotor cortex CP, while magnitude patterns prefrontal appear dependent task demands. Normalization metrics observed postintervention 3) paralleled improvements outcomes, highlighting their potential as promising biomarkers gains CP. Interpretation This details highlights research gaps technical limitations, offers recommendations support implementation ecologically valid neuroimaging

Language: Английский

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Music in the loop: a systematic review of current neurofeedback methodologies using music

Frontiers in Neuroscience, Journal Year: 2025, Volume and Issue: 19

Published: Feb. 28, 2025

Music, a universal element in human societies, possesses profound ability to evoke emotions and influence mood. This systematic review explores the utilization of music allow self-control brain activity its implications clinical neuroscience. Focusing on music-based neurofeedback studies, it methodological aspects findings propose future directions. Three key questions are addressed: rationale behind using as stimulus, integration into feedback loop, outcomes such interventions. While studies emphasize emotional link between activity, mechanistic explanations lacking. Additionally, there is no consensus imaging or behavioral measures success. The suggests considering whole-brain neural correlates stimuli their interaction with target networks reward mechanisms when designing music-neurofeedback studies. Ultimately, this aims serve valuable resource for researchers, facilitating deeper understanding music's role guiding investigations.

Language: Английский

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Motor Cortex Activation Patterns in Both Hemispheres Induced by Motor Imagery in Patients With Right‐ and Left‐Sided Cerebral Infarction: An fNIRS Study

European Journal of Neuroscience, Journal Year: 2025, Volume and Issue: 61(7)

Published: April 1, 2025

This study aimed to explore the neuroimaging basis of motor imagery (MI) in stroke rehabilitation, particularly focusing on brain activation patterns during MI tasks. Additionally, this may provide insights into clinical rehabilitation strategies. A total 40 right-handed patients from Zhejiang Rehabilitation Medical Center were assigned either right-sided or left-sided cerebral infarction group. They and recruited Center. portable near-infrared function imaging system was used detect changes oxyhemoglobin concentration bilateral sensorimotor cortex, premotor supplementary area task. Activated channels intensity regions under state observed analyzed. In with infarction, left-lateralized both left- right-limb MI. Patients exhibited left lateralization right left-limb Functional spectroscopy utilized investigate motor-related after stroke. These interest associated hand tasks successfully activated Following cortex asymmetric. When imagining movements dominant-hand side, becomes more vivid activates areas.

Language: Английский

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The application of fNIRS in studies on occupational workload: a systematic review

Frontiers in Public Health, Journal Year: 2025, Volume and Issue: 13

Published: April 22, 2025

Background Occupational workload can contribute to significant health problems such as chronic stress, fatigue and burnout. To investigate the underlying mechanisms, it is necessary monitor brain activity in real work environments. Functional near-infrared spectroscopy (fNIRS) a portable, non-invasive neuroimaging method that captures neural correlates of occupational under natural conditions. However, despite its increasing application, comprehensive overview fNIRS-based research this field lacking. Therefore, systematic review examines how fNIRS be utilized workload. Methods Following PRISMA 2020 guidelines, we conducted our by searching Web Science, PubMed, Scopus between November 15, 2023 March 20, 2025. We included all studies published English or German at any date, long they examined healthy adult professionals performing tasks with functional (fNIRS). Extracted data study characteristics, details, signal processing methods, main findings, quality, assessed using JBI Critical Appraisal Tool. Results 41 studies. Of these, 23 reported increase oxygenated hemoglobin (HbO) concentration connectivity prefrontal cortex (PFC) higher Only five typical office tasks. Nine analyzed differences cortical activation experts novices, showing increased HbO PFC than novices. Regarding methodology, 26 used standardized optode placements, while only 17 applied systemic extracerebral artifact correction. Small sample sizes absence randomized controlled trials limited reliability reproducibility findings. Conclusion effectively detects provides objective insights into cognitive demands real-world settings. Standardizing placement, harmonizing signal-processing would enhance validity comparability future research. Expanding investigations environments also crucial for understanding daily developing interventions promote employee well-being productivity. Overall, represents promising tool establishing evidence-based workplace promotion strategies across diverse

Language: Английский

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Validating the reproducibility of a low-cost single-channel fNIRS device across hierarchical cognitive tasks

Frontiers in Neuroscience, Journal Year: 2024, Volume and Issue: 18

Published: April 24, 2024

This study evaluates a low-cost, single-channel fNIRS device in cognitive neuroscience, aiming to overcome the financial barriers of commercial systems by testing its efficacy tasks varying complexity. Twenty-six participants engaged motor control (finger-tapping), working memory (n-back), and creativity (AUT) while their prefrontal cortex activity was monitored using device, with behavioral cerebral blood flow changes recorded. Results showed device's capability detect significant variations across different tasks, thereby supporting use research. The confirms potential as cost-effective tool for diverse assessments, from simple actions complex creative thinking.

Language: Английский

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From lab to life: challenges and perspectives of fNIRS for haemodynamic-based neurofeedback in real-world environments

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 379(1915)

Published: Oct. 21, 2024

Neurofeedback allows individuals to monitor and self-regulate their brain activity, potentially improving human function. Beyond the traditional electrophysiological approach using primarily electroencephalography, haemodynamics measured with functional magnetic resonance imaging (fMRI) more recently, near-infrared spectroscopy (fNIRS) have been used (haemodynamic-based neurofeedback), particularly improve spatial specificity of neurofeedback. Over recent years, especially fNIRS has attracted great attention because it offers several advantages over fMRI such as increased user accessibility, cost-effectiveness mobility—the latter being most distinct feature fNIRS. The next logical step would be transfer haemodynamic-based neurofeedback protocols that already proven validated by mobile However, this undertaking is not always easy, since novices may miss important fNIRS-specific methodological challenges. This review aimed at researchers from different fields who seek exploit unique capabilities for It carefully addresses challenges suggestions possible solutions. If raised are addressed further developed, could emerge a useful technique its own application potential—the targeted training activity in real-world environments, thereby significantly expanding scope scalability applications. article part theme issue ‘Neurofeedback: new territories neurocognitive mechanisms endogenous neuromodulation’.

Language: Английский

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