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Significance: This work targets the contamination of optical signals by superficial hemodynamics, which is one of the chief hurdles in non-invasive optical measurements of the human brain. Aim: To identify optimal source-detector distances…

医学物理 · 物理学 2023-01-05 Giles Blaney , Cristianne Fernandez , Angelo Sassaroli , Sergio Fantini

Functional Near-Infrared Spectroscopy (fNIRS) is a non-invasive, real-time method for monitoring brain activity by measuring hemodynamic responses in the cerebral cortex. However, existing systems are expensive, bulky, and limited to…

信号处理 · 电气工程与系统科学 2025-05-28 Tony Kim , Haotian Liu , Chiung-Ting Huang , Ingrid Wu , Xilin Liu

This study presents an integrated approach for advancing functional Near-Infrared Spectroscopy (fNIRS) neuroimaging through the synthesis of data and application of machine learning models. By addressing the scarcity of high-quality…

信号处理 · 电气工程与系统科学 2024-05-21 Eitan Waks

Functional near-infrared spectroscopy (fNIRS) is a non-invasive, low-cost method used to study the brain's blood flow pattern. Such patterns can enable us to classify performed by a subject. In recent research, most classification systems…

机器学习 · 计算机科学 2021-01-18 Sajila D. Wickramaratne , MD Shaad Mahmud

Functional near-infrared spectroscopy (fNIRS) is employed as a non-invasive method to monitor functional brain activation by capturing changes in the concentrations of oxygenated haemoglobin (HbO) and deoxygenated haemo-globin (HbR).…

Functional near-infrared spectroscopy (fNIRS) is a non-invasive technique for monitoring brain activity. To better understand the brain, researchers often use deep learning to address the classification challenges of fNIRS data. Our study…

信号处理 · 电气工程与系统科学 2024-11-25 Zhihao Cao

Stress is known as one of the major factors threatening human health. A large number of studies have been performed in order to either assess or relieve stress by analyzing the brain and heart-related signals. In this study, signals…

信号处理 · 电气工程与系统科学 2020-02-18 Mahya Mirbagheri , Ata Jodeiri , Naser Hakimi , Vahid Zakeri , Seyed Kamaledin Setarehdan

Motion simulators allow researchers to safely investigate the interaction of drivers with a vehicle. However, many studies that use driving simulator data to predict cognitive load only employ two levels of workload, leaving a gap in…

People with Multiple Sclerosis (MS) complain of problems with hand dexterity and cognitive fatigue. However, in many cases, impairments are subtle and difficult to detect. Functional near-infrared spectroscopy (fNIRS) is a non-invasive…

机器学习 · 计算机科学 2025-09-29 Sadman Saumik Islam , Bruna Dalcin Baldasso , Davide Cattaneo , Xianta Jiang , Michelle Ploughman

In the current paper, we introduce a parametric data-driven model for functional near-infrared spectroscopy that decomposes a signal into a series of independent, rescaled, time-shifted, hemodynamic basis functions. Each decomposed waveform…

信号处理 · 电气工程与系统科学 2020-01-24 Marco A. Pinto-Orellana , Diego C. Nascimento , Peyman Mirtaheri , Rune Jonassen , Anis Yazidi , Hugo L. Hammer

Hyperscanning with functional near-infrared spectroscopy (fNIRS) is an emerging neuroimaging application that measures the nuanced neural signatures underlying social interactions. Researchers have assessed the effect of sex and task type…

图像与视频处理 · 电气工程与系统科学 2021-12-09 Liam A. Kruse , Allan L. Reiss , Mykel J. Kochenderfer , Stephanie Balters

In Functional Data Analysis, data are commonly assumed to be smooth functions on a fixed interval of the real line. In this work, we introduce a comprehensive framework for the analysis of functional data, whose domain is a two-dimensional…

统计方法学 · 统计学 2019-08-02 Eardi Lila , John A. D. Aston

Functional near-infrared spectroscopy (fNIRS) is a non-invasive optical technique that measures brain activity by estimating blood oxygenation using near-infrared light. Traditionally, PsychoPy is used in many studies to send task-specific…

人机交互 · 计算机科学 2024-11-19 Shayla Sharmin , Md Fahim Abrar , Roghayeh Leila Barmaki

Brain-Computer Interfaces enable direct communication between the brain and external systems, with functional Near-Infrared Spectroscopy emerging as a portable and non-invasive method for capturing cerebral hemodynamics. This study…

神经元与认知 · 定量生物学 2025-05-16 Mohammad Ghalavand , Javad Hatami , Seyed Kamaledin Setarehdan , Hananeh Ghalavand

Functional Near-Infrared Spectroscopy (fNIRS) is a non-invasive form of Brain-Computer Interface (BCI). It is used for the imaging of brain hemodynamics and has gained popularity due to the certain pros it poses over other similar…

机器学习 · 计算机科学 2021-01-19 Talha Siddique , Md Shaad Mahmud

We demonstrate the possibility of reconstructing images from fNIRS brain activity and start building a prototype to match the required specs. By training an image reconstruction model on downsampled fMRI data, we discovered that cm-scale…

Significance: Optical neuroimaging has become a well-established clinical and research tool to monitor cortical activations in the human brain. It is notable that outcomes of functional Near-InfraRed Spectroscopy (fNIRS) studies depend…

神经元与认知 · 定量生物学 2023-01-03 Condell Eastmond , Aseem Subedi , Suvranu De , Xavier Intes

Advances in neuroimaging techniques have provided us novel insights into understanding how the human mind works. Functional magnetic resonance imaging (fMRI) is the most popular and widely used neuroimaging technique, and there is growing…

神经元与认知 · 定量生物学 2022-06-15 Jihyun Hur , Jaeyeong Yang , Hoyoung Doh , Woo-Young Ahn

The second near-infrared window (NIR-II, 900-1,880 nm) has been pivotal in advancing in vivo fluorescence imaging due to its superior penetration depth and contrast. Yet, its clinical utility remains limited by insufficient imaging…

In many laboratories, conventional bright-field transmission microscopes are available to study the structure and organization principles of fibrous tissue samples, but they usually provide only 2D information. To access the third…

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