Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 83 - 99
Опубликована: Ноя. 1, 2024
Язык: Английский
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
Frontiers in Neuroscience, Год журнала: 2023, Номер 17
Опубликована: Ноя. 8, 2023
This paper provides a concise review of learning-based motion artifacts (MA) processing methods in functional near-infrared spectroscopy (fNIRS), highlighting the challenges maintaining optimal contact during subject movement, which can lead to MA and compromise data integrity. Traditional strategies often result reduced reliability hemodynamic response statistical power. Recognizing limited number studies focusing on removal, we examine 315 studies, identifying seven pertinent our focus area. We discuss current landscape correction highlight research gaps. Noting absence standard evaluation metrics for quality assessment correction, suggest novel framework, integrating signal model considerations employing like ΔSignal-to-Noise Ratio (ΔSNR), confusion matrix, Mean Squared Error. work aims facilitate application methodologies fNIRS improve accuracy neurovascular studies.
Язык: Английский
Процитировано
4
Neurophotonics, Год журнала: 2024, Номер 11(01)
Опубликована: Янв. 31, 2024
SignificanceA fleeting flash aligned vertically with an object remaining stationary in the head-centered space would be perceived as lagging behind during observer's horizontal head rotation. This perceptual mislocalization is illusion named head-rotation-induced flash-lag effect (hFLE). While many studies have investigated neural mechanism of classical visual FLE, hFLE has been hardly investigated.AimWe measured cortical activity corresponding to on participants experiencing passive rotations using functional near-infrared spectroscopy.ApproachParticipants were asked judge relative position a fixed reference while being horizontally rotated or staying static swivel chair. Meanwhile, spectroscopy signals recorded temporal-parietal areas. The duration was manipulated provide control conditions.ResultsBrain specific found around right middle/inferior temporal gyri, and bilateral supramarginal gyri superior activation positively correlated rotation velocity participant gyrus negatively related intensity middle gyrus.ConclusionsThese results suggest that underlying involves multiple aspects visual-vestibular interactions including processing multisensory conflicts mediated by temporoparietal junction modulation vestibular perception human complex.
Язык: Английский
Процитировано
1
IEEE Transactions on Cognitive and Developmental Systems, Год журнала: 2024, Номер 16(5), С. 1872 - 1886
Опубликована: Апрель 16, 2024
Язык: Английский
Процитировано
1
Frontiers in Neuroergonomics, Год журнала: 2023, Номер 4
Опубликована: Апрель 17, 2023
Introduction In recent years, experiential consumption, which refers to purchases involving hedonic experiences, has been gathering attention in marketing research. Experiential consumption is closely related cognitive biases, and among them, we focus on the IKEA effect, a bias maximum willingness pay (WTP) for product high because experience of assembling highly valued. Since no studies have examined neural mechanism behind here present first study exploring substrates effect using functional near-infrared spectroscopy (fNIRS). During WTP evaluation, expect attachment memory retrieval DIY products be effect. Methods Thirty healthy students, 24 were confirmed undergone asked perform evaluation task after three types do-it-yourself (DIY) handling Non-DIY products. Their cerebral hemodynamic responses during measured fNIRS. order adjust temporal variability cortical participants, personalized adaptive general linear model (GLM) analysis was adopted. Then, one-sample t -tests performed each condition obtained β values, paired -test between conditions. Results We identified brain regions, including left-inferior frontal gyrus (L-IFG) left-middle (L-MFG), probably processing Among L-MFG exhibited more activation than condition. Conclusion To our knowledge, current reveal basis The marked differences. addition R-IFG often reported evaluations, revealed that other particular L-IFG L-MFG, activated These areas are considered attachment, would serve as reasonable constituents conclusion, this suggests value can assessed fNIRS-based neuroimaging provides novel approach consumer neuroergonomics. It predicted visualization will create opportunities companies become an indispensable method future.
Язык: Английский
Процитировано
3
Опубликована: Сен. 14, 2023
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 tomaintain quality contexts ensure they reflect true underlying activity. However, signals are susceptible contamination by cerebral extracerebral systemic noise well motion artifacts. Insuffcient 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.
Язык: Английский
Процитировано
2
Bioengineering, Год журнала: 2023, Номер 11(1), С. 33 - 33
Опубликована: Дек. 27, 2023
Regional cerebral oxygen saturation (rSO2), a method of tissue oxygenation measurement, is recorded using non-invasive near-infrared Spectroscopy (NIRS) devices. A major limitation that signals often contain artifacts. Manually removing these artifacts both resource and time consuming. The objective was to evaluate the applicability wavelet analysis as an automated for simple signal loss artifact clearance rSO2 obtained from commercially available retrospective observational study existing populations (healthy control (HC), elective spinal surgery patients (SP), traumatic brain injury (TBI)) conducted. Arterial blood pressure (ABP) data were collected in all patients. Wavelet determined be successful coefficients coherence detect signals. removal success rates HC, SP, TBI 100%, 99.8%, 99.7%, respectively (though it had limited precision determining exact point time). Thus, may prove useful layered approach NIRS tool utilizing higher-frequency data; however, future work needed.
Язык: Английский
Процитировано
2
Photonics, Год журнала: 2023, Номер 10(12), С. 1334 - 1334
Опубликована: Дек. 1, 2023
Delirium persists as the most common neuropsychiatric syndrome among medically ill hospitalized patients, yet its neural mechanisms remain poorly understood. The development of neuroimaging biomarkers has been difficult primarily due to complexities imaging patients experiencing delirium. Optical techniques, including near-infrared spectroscopy (NIRS) and diffuse optical tomography (DOT), offer promising avenues for investigating delirium’s pathophysiology. These modalities uniquely stand out delirium exploration their blend spatiotemporal resolution, bedside applicability, cost-effectiveness, potential real-time monitoring. In this review, we examine emergence pioneering utility in research. With further investment research efforts, they will become instrumental our understanding pathophysiology preventive, predictive, therapeutic strategies.
Язык: Английский
Процитировано
1
Опубликована: Март 8, 2024
In this study, we propose the Signal Integration Reconstruction Peak Detection (SIRPD) algorithm for reliable Cardiac Beat Interval (CBI) measurement using functional Near-Infrared Spectroscopy (fNIRS) signals. This enhances reliability by identifying a regular waveform in cerebral blood flow associated with heartbeats. The SIRPD assesses Quality Index (SQI) per channel, discards signals from unavailable channels, and interpolates oxygenated total hemoglobin concentration signals, thereby boosting resolution integrating signal into single channel. integrated smoothed is transformed to identify most significant periodic waveform, which CBI extracted. Validated data 20 healthy subjects who simultaneously recorded fNIRS ECG our findings confirm equivalence of derived calculated through (R^2 = .98, RMSE .011, ICC .991). We also extracted heart rate variability (HRV) features, confirming no difference all features between devices. Uniquely, study regards not as an artifact source but valuable bio signal. proposed method, allows detection cardiac beat intervals oscillations, suggests potential clinical applicability auxiliary indicator various cardiovascular factors.
Язык: Английский
Процитировано
0
Neurophotonics, Год журнала: 2024, Номер 11(02)
Опубликована: Апрель 26, 2024
SignificanceAlthough measurements of near-infrared light diffusely reflected from the head and other biological tissues are commonly used to generate images revealing changes in concentrations oxy- deoxy-hemoglobin, static imaging absolute has been inhibited by unknown variable coupling between optical probe skin, which hair is often a significant contributor. Measurements spectral derivatives provide means overcoming this shortcoming.AimThe aim demonstrate experimentally that derivative attenuation detected signal with respect wavelength can be achieve immune spatial variation on surface. The objective topographic representative absorbing properties rather than retrieving coefficients, requires tomographic approach.ApproachThe surface tissue-equivalent phantom, containing targets different dye, was coated layer dark hair. phantom then imaged using broadband source spectrometer, prior knowledge characteristics dye melanin acquire separate each.ResultsThe within revealed remarkable clarity, although nonlinear relationship target contrast absorption observed. This behavior confirmed explained Monte Carlo model propagation slab similar properties.ConclusionsA approach could an effective tool for vivo brain tissues, avoiding deleterious effects
Язык: Английский
Процитировано
0