4,624 Hits in 13.0 sec

Real-time imaging of human brain function by near-infrared spectroscopy using an adaptive general linear model

A. Farras Abdelnour, Theodore Huppert
2009 NeuroImage  
We propose a novel real-time analysis framework using an adaptive Kalman filter and a state-space model based on a canonical general linear model of brain activity.  ...  In this work, we demonstrate the ability to record and analyze images of brain activity in real-time using a 16-channel continuous wave optical NIRS system.  ...  Acknowledgments This work was supported by department funds from the University of Pittsburgh's department of radiology.  ... 
doi:10.1016/j.neuroimage.2009.01.033 pmid:19457389 pmcid:PMC2758631 fatcat:xj4vwevphjhjljvykkevwzplwu

Functional near-infrared spectroscopy for adaptive human-computer interfaces

Beste F. Yuksel, Evan M. Peck, Daniel Afergan, Samuel W. Hincks, Tomoki Shibata, Jana Kainerstorfer, Kristen Tgavalekos, Angelo Sassaroli, Sergio Fantini, Robert J. K. Jacob, Bruce J. Tromberg, Arjun G. Yodh (+2 others)
2015 Optical Tomography and Spectroscopy of Tissue XI  
We present a brain-computer interface (BCI) that detects, analyzes and responds to user cognitive state in real-time using machine learning classifications of functional near-infrared spectroscopy (fNIRS  ...  cognitive state in real-time.  ...  ACKNOWLEDGMENTS We thank the National Science Foundation (grants IIS-1065154 and IIS-1218170) for its support of this research. We would also like to thank Prof.  ... 
doi:10.1117/12.2075929 fatcat:57vgzvum3zezldjwxzmr3fpp2y

Reduction of Onset Delay in Functional Near-Infrared Spectroscopy: Prediction of HbO/HbR Signals

Amad Zafar, Keum-Shik Hong
2020 Frontiers in Neurorobotics  
In monitoring the time responses of blood-oxygen-level-dependent signals with functional near-infrared spectroscopy (fNIRS), the early trajectories of both oxy- and deoxy-hemoglobins in their phase space  ...  An intrinsic problem when using hemodynamic responses for the brain-machine interface is the slow nature of the physiological process.  ...  Real-time imaging of human brain function by near-infrared spectroscopy using an adaptive general linear model.  ... 
doi:10.3389/fnbot.2020.00010 pmid:32132918 pmcid:PMC7040361 fatcat:2ktdj4fiovgwvfgwpa2ontl7e4

Applications of Near Infrared Spectroscopy in Neurorehabilitation [chapter]

Masahito Mihara, Ichiro Miyai
2012 Infrared Spectroscopy - Life and Biomedical Sciences  
As another approach, the real-time analysis of the NIRS signal with an adaptive general linear model using Kalman filtering was also reported (Abdelnour & Huppert, 2009 ).  ...  infrared light is mainly absorbed by haemoglobin when used as a functional brain-imaging tool.  ...  Applications of Near Infrared Spectroscopy in Neurorehabilitation, Infrared Spectroscopy -Life and Biomedical Sciences, Prof.  ... 
doi:10.5772/36354 fatcat:v7d4blz56vhqfl7umly6wahjza

Functional near-infrared spectroscopy (fNIRS) of brain function during active balancing using a video game system

Helmet Karim, Benjamin Schmidt, Dwight Dart, Nancy Beluk, Theodore Huppert
2012 Gait & Posture  
Functional near-infrared spectroscopy (fNIRS) is a portable, non-invasive, brain imaging technology that uses low levels of non-ionizing light to record changes in cerebral blood flow in the brain through  ...  Using fNIRS, we found activation of superior temporal gyrus, which was modulated by the difficulty of the balance task.  ...  Acknowledgments This work was funded by startup funding by the University of Pittsburgh Department of Radiology and the National Institutes of Health (NIH-NIA P30AG024827)  ... 
doi:10.1016/j.gaitpost.2011.10.007 pmid:22078300 pmcid:PMC3294084 fatcat:ncsmdnzznnbw5iaqgo7phqqluq

Front Matter: Volume 10251

2017 Biomedical Imaging and Sensing Conference  
Publication of record for individual papers is online in the SPIE Digital Library. Paper Numbering: Proceedings of SPIE follow an e-First publication model.  ...  A unique citation identifier (CID) number is assigned to each article at the time of publication.  ...  -69] 10251 1Z Estimation of functional areas probed by near-infrared spectroscopy instruments [10251-70] 10251 20 pH-responsive hydrogel coated fiber Bragg grating-based chemo mechanical sensor  ... 
doi:10.1117/12.2280106 fatcat:ckg5k47r4ndjxjzlu36riy45nu

Brain–Computer Interfacing Using Functional Near-Infrared Spectroscopy (fNIRS)

Kogulan Paulmurugan, Vimalan Vijayaragavan, Sayantan Ghosh, Parasuraman Padmanabhan, Balázs Gulyás
2021 Biosensors  
Functional Near-Infrared Spectroscopy (fNIRS) is a wearable optical spectroscopy system originally developed for continuous and non-invasive monitoring of brain function by measuring blood oxygen concentration  ...  Recent advancements in brain–computer interfacing allow us to control the neuron function of the brain by combining it with fNIRS to regulate cognitive function.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/bios11100389 pmid:34677345 pmcid:PMC8534036 fatcat:c6k3tj7ghngbfkwl3i3ntwq5he

Deep learning model for ultrafast quantification of blood flow in diffuse correlation spectroscopy [article]

Chien-Sing Poon, Feixiao Long, Ulas Sunar
2020 bioRxiv   pre-print
Diffuse correlation spectroscopy (DCS) is increasingly used in optical imaging field to assess blood flow in humans due to its non-invasive, real-time characteristics and its ability to provide label-free  ...  The proposed deep learning inverse model will enable real-time and accurate tissue blood flow quantification with the DCS technique.  ...  Near-infrared diffuse correlation spectroscopy (DCS), also known as diffusing-wave spectroscopy (DWS), is an emerging technique for measuring blood flow in humans.  ... 
doi:10.1101/2020.06.24.167882 fatcat:h53wmwrkmnaihizkcgqzbe7tfa

Review of functional near-infrared spectroscopy in neurorehabilitation

Masahito Mihara, Ichiro Miyai
2016 Neurophotonics  
We provide a brief overview of the research and clinical applications of near-infrared spectroscopy (NIRS) in the neurorehabilitation field.  ...  As one of the main applications of NIRS, we discuss its application as a monitoring tool, including investigating the neural mechanism of functional recovery after brain damage and investigating the neural  ...  Acknowledgments We thank the "Research and Development Grants for Comprehensive Research for Persons with Disabilities" from the Japan Agency for Medical Research and Development (AMED), the "Development of  ... 
doi:10.1117/1.nph.3.3.031414 pmid:27429995 pmcid:PMC4940623 fatcat:c6luvqqeebbhlhzzgbf5kjtasy

Front Matter: Volume 9319

2015 Optical Tomography and Spectroscopy of Tissue XI Paper Numbering: Proceedings of SPIE follow an e-First publication model, with papers published first online and then in print.  ...  The complete citation is used on the first page, and an abbreviated version on subsequent pages.  ...  spectroscopy (CHS) (Invited Paper) [9319-22] 9319 0R Functional near-infrared spectroscopy for adaptive human-computer interfaces [9319-26] SESSION 6 FLUORESCENCE I 9319 0S Fluorescence lifetime  ... 
doi:10.1117/12.2192370 fatcat:dpekpcewufep5f3offh3ddyhkq

Quality control and assurance in functional near infrared spectroscopy (fNIRS) experimentation

F Orihuela-Espina, D R Leff, D R C James, A W Darzi, G Z Yang
2010 Physics in Medicine and Biology  
Functional near infrared spectroscopy (fNIRS) is a rapidly developing neuroimaging modality for exploring cortical brain behaviour.  ...  Despite recent advances, the quality of fNIRS experimentation may be compromised in several ways. Firstly, by altering the optical properties of the tissues encountered in the path of light.  ...  90 1657-62 Hoshi Y, Shimada M, Sato C and Iguchi Y 2005 Reevaluation of near-infrared light propagation in the adult human head: implications for functional near-infrared spectroscopy Journal of Biomedical  ... 
doi:10.1088/0031-9155/55/13/009 pmid:20530852 fatcat:ljy3gecy4fb2zkxqrsfzhvstpa

Spectroscopy and Imaging with Diffusing Light

Arjun Yodh, Britton Chance
1995 Physics today  
Our work is supported by the National Science Foundation (Yodh) and the National Institutes of Health (Chance).  ...  We particularly wish to acknowledge collaborations and discussions with scientists at the University of Pennsylvania, including Bertran Beauvoit, David Boas, Michael Cohen, Jack Leigh, Dean Kurth, Hanli  ...  Functional imaging and object localization Near-infrared diffusing light probes offer new techniques for clinical diagnosis of the human body's structure and function.  ... 
doi:10.1063/1.881445 fatcat:rhktoatz7rejrkubz3ms5iotki

Physical aspects of medical science

Tohru Yoshioka
2012 Kaohsiung Journal of Medical Sciences  
near infrared spectroscopy.  ...  Among these, the physical approach is the most important for an exact elucidation of the physiological function of living materials. What is a physical approach?  ...  NIRS Z near infrared spectroscopy.  ... 
doi:10.1016/j.kjms.2011.08.005 pmid:22301010 fatcat:l4rwhunxbbhexfdnq52hjoid3q

Optical aspects of a miniature fluorescence microscope for super-sensitive biomedical detection

Yunfeng Nie, Aikio Sanna, Annukka Kokkonen, Teemu Sipola, Uusitalo Sanna, Simonetta Grilli, Heidi Ottevaere
2020 Zenodo  
We present optical design and the principle demonstrator of a miniature fluorescence microscope aiming for super-sensitive detection.  ...  We report on functional near-infrared spectroscopy (fNIRS) as a tool to monitor the effect of transcranial electrical stimulation (tES) on human bimanual motor performance. 3 Pediatrics, Emory Univ.  ...  Time-domain diffuse correlation spectroscopy (TD-DCS) aims to increase cerebral blood flow (CBF) sensitivity by discriminating photon time of flight.  ... 
doi:10.5281/zenodo.3822435 fatcat:3eoome22a5grbmarbrktphfh7a

Functional Near-Infrared Spectroscopy in Human-Robot Interaction

Cody Canning, Matthias Scheutz
2013 Journal of Human-Robot Interaction  
Keywords: human-robot interaction (HRI), functional near-infrared spectroscopy (fNIRS), nearinfrared spectroscopy (NIRS), brain imaging, neuroimaging, brain-robot interface (BRI), humanmachine interaction  ...  Functional near-infrared spectroscopy (fNIRS) is a promising new tool for research in human-robot interaction (HRI).  ...  Acknowledgments This publication was based upon work supported by the National Science Foundation under grant No. ISS-1065154.  ... 
doi:10.5898/jhri.2.3.canning fatcat:xfkvug33gbh57m4rajhvwakh7m
« Previous Showing results 1 — 15 out of 4,624 results