Ecological fNIRS in mobile children: Using short separation channels to correct for systemic contamination during naturalistic neuroimaging. DOI Open Access
Paola Pinti, Larisa-Maria Dina, Richard Smith

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Июнь 3, 2024

Abstract Significance The advances and the miniaturization in functional Near Infrared Spectroscopy (fNIRS) instrumentation offers potential to move classical laboratory-based cognitive neuroscience investigations into more naturalistic settings. Wearable mobile fNIRS devices also provide a novel child-friendly means image brain activity freely moving toddlers preschoolers. Measuring ecologically valid settings with presents additional challenges, such as increased impact of physiological interferences. One most popular methods minimize interferences is regress out short separation channels from long (i.e., superficial signal regression or SSR). Whilst this has been extensively investigated adults, little known about systemic changes on signals recorded children either experiments. Aim We aim investigate if extracerebral occur preschoolers, whether SSR can help these Approach collected data 3-to-7 years olds during conventional computerized static task dynamic an immersive virtual reality (VR) continuous automatic environment (CAVE). Results Our results show that contamination present both young adults. Importantly, we find helps improving localization activity, and, larger extent, VR task. Conclusions Following results, formulate suggestions advance field developmental neuroimaging fNIRS, particularly ecological

Язык: Английский

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

и другие.

Philosophical Transactions of the Royal Society B Biological Sciences, Год журнала: 2024, Номер 379(1915)

Опубликована: Окт. 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’.

Язык: Английский

Процитировано

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

Yasuyo Minagawa

и другие.

Neurophotonics, Год журнала: 2023, Номер 10(02)

Опубликована: Июль 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.

Язык: Английский

Процитировано

8
Reliability of brain metrics derived from a Time-Domain Functional Near-Infrared Spectroscopy System DOI Creative Commons
Julien Dubois, Ryan M. Field, Sami Jawhar

и другие.

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Июль 30, 2024

With the growing interest in establishing brain-based biomarkers for precision medicine, there is a need noninvasive, scalable neuroimaging devices that yield valid and reliable metrics. Kernel's second-generation Flow2 Time-Domain Functional Near-Infrared Spectroscopy (TD-fNIRS) system meets requirements of noninvasive neuroimaging, uses validated modality to measure brain function. In this work, we investigate test-retest reliability (TRR) set metrics derived from recordings. We adopted repeated-measures design with 49 healthy participants, quantified TRR over multiple time points different headsets—in experimental conditions including resting state, sensory, cognitive task. Results demonstrated high state features hemoglobin concentrations, head tissue light attenuation, amplitude low frequency fluctuations, functional connectivity. Additionally, passive auditory Go/No-Go inhibitory control tasks each exhibited similar activation patterns across days. Notably, areas highest were regions during task, right prefrontal consistent prior literature. This study underscores Flow2-derived metrics, supporting its potential actualize vision using diagnosis, treatment selection monitoring neuropsychiatric neurocognitive disorders.

Язык: Английский

Процитировано

2
ninjaNIRS: an open hardware solution for wearable whole-head high-density functional near-infrared spectroscopy DOI Creative Commons

W. Joseph O’Brien,

Laura Carlton,

Johnathan Muhvich

и другие.

Biomedical Optics Express, Год журнала: 2024, Номер 15(10), С. 5625 - 5625

Опубликована: Авг. 23, 2024

Functional near-infrared spectroscopy (fNIRS) technology has been steadily advancing since the first measurements of human brain activity over 30 years ago. Initially, efforts were focused on increasing channel count fNIRS systems and then to moving from sparse high density arrays sources detectors, enhancing spatial resolution through overlapping measurements. Over last ten years, there have rapid developments in wearable that place light detectors head as opposed original approach using fiber optics deliver between hardware head. The miniaturization electronics increased computational power continues permit impressive advances systems. Here we detail our design for a system covers whole an adult with high-density array 56 up 192 detectors. We provide characterization showing its performance is among best published Additionally, demonstrative images activation during ball squeezing task. released public, hope community will build upon foundational work drive further advancements.

Язык: Английский

Процитировано

2
Facilitating or disturbing? An investigation about the effects of auditory frequencies on prefrontal cortex activation and postural sway DOI Creative Commons
Valeria Belluscio, Giulia Cartocci,

Tommaso Terbojevich

и другие.

Frontiers in Neuroscience, Год журнала: 2023, Номер 17

Опубликована: Июнь 22, 2023

Auditory stimulation activates brain areas associated with higher cognitive processes, like the prefrontal cortex (PFC), and plays a role in postural control regulation. However, effects of specific frequency stimuli on upright posture maintenance PFC activation patterns remain unknown. Therefore, study aims at filling this gap. Twenty healthy adults performed static double- single-leg stance tasks 60s each under four auditory conditions: 500, 1000, 1500, 2000 Hz, binaurally delivered through headphones, quiet condition. Functional near-infrared spectroscopy was used to measure changes oxygenated hemoglobin concentration, while an inertial sensor (sealed L5 vertebra level) quantified sway parameters. Perceived discomfort pleasantness were rated 0-100 visual analogue scale (VAS). Results showed that both motor tasks, different displayed frequencies performance worsened stimuli, compared conditions. VAS results considered more discomfortable than lower ones. Present data prove sound play significant resources recruitment regulation control. Furthermore, it supports importance exploring relationship among tones, cortical activity, posture, also considering possible applications neurological populations people hearing dysfunctions.

Язык: Английский

Процитировано

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

и другие.

Опубликована: Ноя. 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.

Язык: Английский

Процитировано

5
Reliability of brain metrics derived from a Time-Domain Functional Near-Infrared Spectroscopy System DOI Creative Commons
Julien Dubois, Ryan M. Field, Sami Jawhar

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Март 14, 2024

Abstract With the growing interest in establishing brain-based biomarkers for precision medicine, there is a need noninvasive, scalable neuroimaging devices that yield valid and reliable metrics. Kernel’s second-generation Flow2 Time-Domain Functional Near-Infrared Spectroscopy (TD-fNIRS) system meets requirements of noninvasive neuroimaging, uses validated modality to measure brain function. In this work, we investigate test-retest reliability (TRR) set metrics derived from recordings. We adopted repeated-measures design with 49 healthy participants, quantified TRR over multiple time points different headsets—in experimental conditions including resting state, sensory, cognitive task. Results demonstrated high state features hemoglobin concentrations, head tissue light attenuation, amplitude low frequency fluctuations, functional connectivity. Additionally, passive auditory Go/No-Go inhibitory control tasks each exhibited similar activation patterns across days. Notably, areas highest were regions during task, right prefrontal consistent prior literature. This study underscores Flow2-derived metrics, supporting its potential actualize vision using diagnosis, treatment selection monitoring neuropsychiatric neurocognitive disorders.

Язык: Английский

Процитировано

1
ninjaCap: A fully customizable and 3D printable headgear for fNIRS and EEG brain imaging DOI Creative Commons
Alexander von Lühmann, Sreekanth Kura, William J. O’Brien

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Май 16, 2024

Accurate sensor placement is vital for non-invasive brain imaging, particularly functional near infrared spectroscopy (fNIRS) and diffuse optical tomography (DOT), which lack standardized layouts like EEG. Custom, manually prepared probe on textile caps are often imprecise labor-intensive.

Язык: Английский

Процитировано

1
Naturalistic approach to investigate the neural correlates of a laundry cycle with and without fragrance DOI Creative Commons

Giuliano Gaeta,

Natalie Gunasekara,

Paola Pinti

и другие.

Biomedical Optics Express, Год журнала: 2024, Номер 15(9), С. 5461 - 5461

Опубликована: Авг. 9, 2024

Advancements in brain imaging technologies have facilitated the development of "real-world" experimental scenarios. In this study, participants engaged a household chore - completing laundry cycle while their frontal lobe activity was monitored using fNIRS. Participants completed twice both fragranced and unfragranced detergent, to explore if fNIRS is able identify any differences response subtle changes stimuli. Analysis conducted Automatic IDentification functional Events (AIDE) software correlation-based signal improvement (CBSI). Results indicated that activity, particularly right frontopolar occasionally left dorsolateral prefrontal cortex, more pronounced frequent with detergent than fragranced. This suggests tasks an environment where pleasant relaxing fragrance present might be less effortful compared odourless environment.

Язык: Английский

Процитировано

1
Development of the international standard for functional near-infrared spectroscopy as medical equipment [Invited] DOI Creative Commons
Hiroshi Kawaguchi,

Hideo Eda

Biomedical Optics Express, Год журнала: 2024, Номер 15(9), С. 5272 - 5272

Опубликована: Авг. 9, 2024

Functional near-infrared spectroscopy (fNIRS) is widely used in academia and medicine, especially human brain science. The international standard for the basic safety essential performance of fNIRS equipment as a medical device was established by International Electrotechnical Commission (IEC) published IEC 80601-2-71. In this review, authors, who are experienced project leaders developing revising standard, provide information on development including process to date expectations research community. review will guide future experts revisions relevant development.

Язык: Английский

Процитировано

1