A Parametric Model for Characterizing Time-Variant Single Trials of Block-Design fNIRS Experiments DOI
Tommy Peng, Jamal Esmaelpoor, Darren Mao

et al.

2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), Journal Year: 2023, Volume and Issue: unknown, P. 1 - 4

Published: July 24, 2023

Block-design is a popular experimental paradigm for functional near-infrared spectroscopy (fNIRS). Traditional block-design analysis techniques such as generalized linear modeling (GLM) and waveform averaging (WA) assume that the brain time-invariant system. This flawed assumption. In this paper, we propose parametric Gaussian model to quantify time-variant behavior found across consecutive trials of fNIRS experiments. Using simulated data at different signal-to-noise ratios (SNRs), demonstrate our proposed technique capable characterizing Gaussian-like signal features with ≥3dB SNR. When used fit recorded from an auditory experiment, parameter values quantitatively revealed statistically significant changes in responses trials, consistent visual inspection individual trials. Our results suggest effectively captures trial-to-trial differences response, which enables researchers study using

Language: Английский

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

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

Citations

8
Using preregistration as a tool for transparent fNIRS study design DOI Creative Commons
Philipp A. Schroeder, Christina Artemenko, Jessica E. Kosie

et al.

Neurophotonics, Journal Year: 2023, Volume and Issue: 10(02)

Published: March 8, 2023

The expansion of functional near-infrared spectroscopy (fNIRS) methodology and analysis tools gives rise to various design analytical decisions that researchers have make. Several recent efforts developed guidelines for preprocessing, analyzing, reporting practices. For the planning stage fNIRS studies, similar guidance is desirable. Study preregistration helps transparently document study protocols before conducting study, including materials, methods, analyses, thus, others verify, understand, reproduce a study. Preregistration can thus serve as useful tool transparent, careful, comprehensive design.We aim create guide on steps involved in studies provide template specified studies.The presented has strong focus specific requirements, associated provides examples based continuous-wave (CW) conducted humans. These can, however, be extended other types studies.On step-by-step basis, we walk user through key methodological analysis-related aspects central design. include items CW, task-based but also sections are general importance, an in-depth elaboration sample size planning.Our introduces these open science community, providing with overview specification recommendations planning. As such it used preregister or merely transparent

Language: Английский

Citations

22
Niche overlap by invasion of Oncorhynchus mykiss on the habitat of its amphibian prey in central Mexico DOI
Armando Sunny,

Jessica Ruiz-Reyes,

Hublester Domínguez-Vega

et al.

Biological Invasions, Journal Year: 2024, Volume and Issue: 26(7), P. 2183 - 2201

Published: April 16, 2024

Language: Английский

Citations

7
Lights on music cognition: A systematic and critical review of fNIRS applications and future perspectives DOI Creative Commons
Federico Curzel, Barbara Tillmann, Laura Ferreri

et al.

Brain and Cognition, Journal Year: 2024, Volume and Issue: 180, P. 106200 - 106200

Published: June 21, 2024

Research investigating the neural processes related to music perception and production constitutes a well-established field within cognitive neurosciences. While most neuroimaging tools have limitations in studying complexity of musical experiences, functional Near-Infrared Spectroscopy (fNIRS) represents promising, relatively new tool for both laboratory ecological settings, which is also suitable typical pathological populations across development. Here we systematically review fNIRS studies on cognition, highlighting prospects potentialities. We include an overview basic theory, together with brief comparison characteristics other tools. Fifty-nine meeting inclusion criteria (i.e., using as primary stimulus) are presented five thematic sections. Critical discussion methodology leads us propose guidelines good practices aiming robust signal analyses reproducibility. A continuously updated world map proposed, including information from criteria. It provides organized, accessible, updatable reference database, could serve catalyst future collaborations community. In conclusion, shows potential music, particularly contexts special populations, aligning current research priorities cognition.

Language: Английский

Citations

4
Neurocognitive dynamics and behavioral differences of symmetry and asymmetry processing in working memory: insights from fNIRS DOI Creative Commons
Izabela Maria Sztuka, Simone Kühn

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 8, 2025

Abstract Symmetry is a ubiquitous property of the visual world. It facilitates cognitive processing and fosters aesthetic appeal. Despite its importance to experience perceptual prominence, integration symmetry in working memory remains underexplored. In our study, participants engaged novel task involving both symmetrical asymmetrical stimuli, while their brain activity was monitored using functional Near Infrared Spectroscopy (fNIRS). The study revealed that significantly enhances performance. improves performance, with stimuli leading higher accuracy faster recall than ones, especially under high load. This effect varies type symmetry, diagonal being most effective. Neuroimaging data showed distinct activation patterns when processed particularly memory-straining condition. Significant differences were observed various regions, lateral occipital, posterior parietal, medial dorsolateral prefrontal cortices reacting decreased oxygenated hemoglobin (HbO), left orbitofrontal (HbO) right ventrolateral cortex (HbO HbR) concentration increased. Overall, findings highlight complex, region-specific response emphasizing nuanced role during tasks potential implication for creative thinking.

Language: Английский

Citations

0
Assessment of cortical activity, functional connectivity, and neuroplasticity in cerebral palsy using functional near‐infrared spectroscopy: A scoping review DOI Creative Commons
Owais A. Khan, Simin Rahman, Kanishka Baduni

et al.

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

Citations

0
From lab to life: challenges and perspectives of fNIRS for haemodynamic-based neurofeedback in real-world environments DOI Creative Commons
Franziska Klein, Simon H. Kohl, Michael Lührs

et al.

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

Citations

3
Special Section Guest Editorial: Thirty Years of Functional Near-Infrared Spectroscopy DOI Creative Commons
David Highton, David A. Boas,

Yasuyo Minagawa

et al.

Neurophotonics, Journal Year: 2023, Volume and Issue: 10(02)

Published: July 6, 2023

Functional Near-Infrared Spectroscopy (fNIRS) is a non-invasive optical technique that measures cerebral hemodynamics across multiple regions of interest, and thereby characterises brain functional activation. Since its first description in 1993, fNIRS has undergone substantial developments hardware, analysis techniques, applications. Thirty years later, this significantly enchancing our understanding diverse areas neuroscience research such as neurodevelopment, cognitive neuroscience, psychiatric disorders, neurodegenerative conditions, injury management intensive care settings. This special issue outlines the latest progress instrumentation techniques showcases some applications within expanding field over past decade.

Language: Английский

Citations

8
Successful modulation of temporoparietal junction activity and stimulus-driven attention by fNIRS-based neurofeedback—A randomized controlled proof-of-concept study DOI Creative Commons
Simon H. Kohl,

Pia Melies,

Johannes Uttecht

et al.

Imaging Neuroscience, Journal Year: 2023, Volume and Issue: 1, P. 1 - 26

Published: Aug. 18, 2023

Abstract The right temporoparietal junction (rTPJ) is a core hub in neural networks associated with reorienting of attention and social cognition. However, it remains unknown whether participants can learn to actively modulate their rTPJ activity via neurofeedback. Here, we explored the feasibility functional near-infrared spectroscopy (fNIRS)-based neurofeedback modulating its effect on functions such as visual perspective taking. In bidirectional regulation control group design, 50 healthy were reinforced either up- or downregulate activation over 4 days training. Both groups showed an increase from beginning training but only upregulation maintained this effect, while downregulation decline initial activation. This suggests learning exclusively, making challenging draw definitive conclusions about effectiveness observed group-specific effects behavioral level. We found significant x time interaction performance task changes, decreased reaction times (RTs) increased RTs across all conditions after Those low baseline greater improvements. perspective-taking task, however, that non-group-specific. These findings demonstrate fNIRS-based feasible method preliminary evidence neurophysiologically specific effects, thus paving way for future applications non-invasive modulation neuropsychiatric disorders.

Language: Английский

Citations

6
From Lab to Life: Challenges and Perspectives of fNIRS for Hemodynamic Neurofeedback in Real-World Environments DOI Open Access
Franziska Klein, Simon H. Kohl, Michael Lührs

et al.

Published: Nov. 17, 2023

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.

Language: Английский

Citations

5