Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Near Infrared Spectroscopy Signal Classification
Download Near Infrared Spectroscopy Signal Classification full books in PDF, epub, and Kindle. Read online Near Infrared Spectroscopy Signal Classification ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Near-infrared Spectroscopy Signal Classification by : Kelly Tai
Download or read book Near-infrared Spectroscopy Signal Classification written by Kelly Tai and published by . This book was released on 2008 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: A brain-computer interface (BCI) allows individuals to communicate through the modulation of regional brain activity. Clinical near-infrared spectroscopy (NIRS) is used to monitor changes in cerebral blood oxygenation due to functional activation. It was hypothesized that visually-cued emotional induction tasks can elicit detectable activity in the prefrontal cortex. Data were collected from eleven participants as they performed positively and negatively-valenced emotional induction tasks. Baseline and activation trials were classified offline with accuracies from 75.0--96.7% after applying a feature selection algorithm to determine optimal performance parameters for each participant. Feature selection identified common discriminatory features across participants and relationships between performance parameters. Additionally, classification accuracy was used to quantify NIRS hemodynamic response latency. Significant increases in classification rates were found as early as 2.5 s after initial stimulus presentation. These results suggest the potential application of emotional induction as a NIRS-BCI control paradigm.
Book Synopsis Detection and Online Classification of the Near-infrared Spectroscopy Fast Optical Signal for Brain-computer Interfaces by : Nicole Proulx
Download or read book Detection and Online Classification of the Near-infrared Spectroscopy Fast Optical Signal for Brain-computer Interfaces written by Nicole Proulx and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Near-infrared spectroscopy (NIRS) can detect a fast optical signal (FOS), corresponding to optical property changes in neuronal tissue during neuronal activation. The FOS has high temporal and spatial resolution, but has a low signal-to-noise ratio. The FOS has yet to be automatically classi- fied, hence its value as a BCI control signal remains unknown. During offline and online sessions, participants performed a visual oddball task. In offline sessions, the FOS was validated with elec- troencephalography (EEG) measurements of event-related potential (ERPs). Spectral relationships between FOS and ERP oddball responses were found in upper delta and theta bands using coherence and Granger causality metrics. A temporal FOS-ERP correlation was also found 200 ms after oddball presentation. Offline and online FOS classification of oddballs versus frequent responses was achieved with average balanced accuracies of 62 Âą 5% and 63 Âą 6%, respectively. FOS classification results were above chance but did not reach the threshold (>70%) for effective BCI communication.
Book Synopsis Oxygen Transport to Tissue XXXIV by : William J. Welch
Download or read book Oxygen Transport to Tissue XXXIV written by William J. Welch and published by Springer Science & Business Media. This book was released on 2012-08-10 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the 39th annual conference of the International Society on Oxygen Transport to Tissue (ISOTT), held in Washington, DC, USA in July 2011, this volume covers aspects of oxygen transport from air to the cells, organs and organisms; instrumentation and methods to sense oxygen and clinical evidence. Oxygen Transport to Tissue XXXIV includes contributions from scientists (physicists, biologists and chemists), engineers, clinicians and mathematicians.
Book Synopsis Application of Machine Learning and Functional Data Analysis in Classification and Clustering of Functional Near Infrared Spectroscopy Signal in Response to Noxious Stimuli by : Ahmad Pourshoghi
Download or read book Application of Machine Learning and Functional Data Analysis in Classification and Clustering of Functional Near Infrared Spectroscopy Signal in Response to Noxious Stimuli written by Ahmad Pourshoghi and published by . This book was released on 2015 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this PhD research has been to utilize machine learning techniques on near infrared spectroscopy (NIRS) signals, for the development of highly accurate and clinically practical biomarkers for the objective assessment of pain perception. While advances in medical imaging technology have significantly improved the scientific knowledge in regards to the brain's response to noxious stimuli, there remains an unmet clinical need for a practical, inexpensive tool for the reliable and objective assessment of pain perception. Even though functional imaging modalities such as fMRI and PET scans deliver superior spatial information, they are not readily accessible for routine clinical use. On the other hand NIRS is non-invasive, safe, portable and affordable with a short setup time. These features make NIRS ideal for clinical applications. In this thesis we used the cold pressor test to induce different levels of pain in healthy subjects while the NIRS signal was recorded from the frontal regions of the brain. We extracted 54 features from each dataset and used machine learning techniques, logistic regression and support vector machine, to classify the signals based on the self-reported pain scores. To select the model for machine learning, we developed our feature selection algorithm based on a RFE-SVM (recursive feature elimination - support vector machine) method to find subsets of feature space with the highest classification capability. Through this process we identified a subset of 10 features which could distinguish high-pain from low-pain stimuli with an accuracy of 85% (Leave-one-out cross validation). Moreover we applied functional data analysis on the collected NIRS data and converted discrete samples to continuous curves. This time we used the same RFE-SVM method on the coefficients of fDA bases (as opposed to extracted features) and we achieved 94% of accuracy to classify low-pain high-pain signals. Then using machine learning techniques (k-means and hierarchical clustering) we found clusters in the data which covered low pain and high pain groups with an accuracy of 91.2%. The center of these clusters can represent the prototype NIRS response of that pain level. Our approaches provided trial-by-trial predictions of pain level from NIRS measurement for each individual (as opposed to methods based on responses averaged across many trials and subjects), and thus, represent a step towards the goal of establishing an objective clinical bio marker of pain perception. Further refinement of proposed methods, including incorporating more datasets and employing other noxious stimuli, is required to make the NIRS technique a powerful clinical tool for pain assessment.
Book Synopsis Hemispheric Asymmetry by : Joseph B. Hellige
Download or read book Hemispheric Asymmetry written by Joseph B. Hellige and published by Harvard University Press. This book was released on 2001 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Is "right-brain" thought essentially creative, and "left-brain" strictly logical? Joseph B. Hellige argues that this view is far too simplistic. Surveying extensive data in the field of cognitive science, he disentangles scientific facts from popular assumptions about the brain's two hemispheres. In Hemispheric Asymmetry, Hellige explains that the "right brain" and "left brain" are actually components of a much larger cognitive system encompassing cortical and subcortical structures, all of which interact to produce unity of thought and action. He further explores questions of whether hemispheric asymmetry is unique to humans, and how it might have evolved. This book is a valuable overview of hemispheric asymmetry and its evolutionary precedents.
Book Synopsis Biomedical Signal Processing by : Iyad Obeid
Download or read book Biomedical Signal Processing written by Iyad Obeid and published by Springer Nature. This book was released on 2021-04-12 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an interdisciplinary look at emerging trends in signal processing and biomedicine found at the intersection of healthcare, engineering, and computer science. It examines the vital role signal processing plays in enabling a new generation of technology based on big data, and looks at applications ranging from medical electronics to data mining of electronic medical records. Topics covered include analysis of medical images, machine learning, biomedical nanosensors, wireless technologies, and instrumentation and electrical stimulation. Biomedical Signal Processing: Innovation and Applications presents tutorials and examples of successful applications, and will appeal to a wide range of professionals, researchers, and students interested in applications of signal processing, medicine, and biology.
Book Synopsis Development of a More Robust Near-Infrared Spectroscopy Brain Computer Interface by : Larissa Christina Schudlo
Download or read book Development of a More Robust Near-Infrared Spectroscopy Brain Computer Interface written by Larissa Christina Schudlo and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Near-infrared spectroscopy (NIRS) has been gaining increasing attention as a brain-computer interface (BCI) modality. However, communication rates offered by this technology are not yet practical for clinical implementation. This thesis investigates the feasibility of enhancing the speed and accuracy attainable by NIRS-BCIs. To date, most studies have utilized activity from a single cortical region, particularly the anterior prefrontal cortex (aPFC), to discern two non-motor-based mental states. However, cognitive processes require coordination between several, spatially-distributed areas. Additional cortical information may help improve classification of mental states, particularly combinations of more than two. Furthermore, testing has largely focused on offline analyses, despite the possibility of enhanced cortical control attainable with feedback. Lastly, NIRS-BCI work has primarily involved able-bodied participants, most of which were offline. In an initial offline study, we investigated the value of utilizing cortical activity measured from multiple brain regions to differentiate all possible combinations of two cognitive tasks and rest. With prefrontal and parietal measurements, average binary and ternary accuracies exceeded 80% and 70%, respectively. Accuracies and information transfer rates (ITRs) improved significantly with the inclusion of measurements beyond the aPFC. A second study was conducted to evaluate ternary classification accuracies achievable in an online system that offered classification feedback. An average online accuracy of 74.2 Âą 14.8% was attained, representing further improvements in NIRS-BCI speed and accuracy. In a final study, we tested an online system developed for a candidate BCI user with severe, congenital muscular impairments. The binary system made use of prefrontal measurements beyond the aPFC and was tailored for the user prior to each online session. Offline and online accuracies of 66.9 Âą 9.11% and 63.33%, respectively, were achieved. Collectively, these findings demonstrate the value of considering multiple brain regions and offering online classification feedback to realize a faster and more accurate NIRS-BCI.
Book Synopsis Combining Pattern Classifiers by : Ludmila I. Kuncheva
Download or read book Combining Pattern Classifiers written by Ludmila I. Kuncheva and published by John Wiley & Sons. This book was released on 2004-08-20 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering pattern classification methods, Combining Classifiers: Ideas and Methods focuses on the important and widely studied issue of how to combine several classifiers together in order to achieve improved recognition performance. It is one of the first books to provide unified, coherent, and expansive coverage of the topic and as such will be welcomed by those involved in the area. With case studies that bring the text alive and demonstrate 'real-world' applications it is destined to become essential reading.
Book Synopsis Near-Infrared Spectroscopy (NIRS) in Functional Research of Prefrontal Cortex by : Nobuo Masataka
Download or read book Near-Infrared Spectroscopy (NIRS) in Functional Research of Prefrontal Cortex written by Nobuo Masataka and published by Frontiers Media SA. This book was released on 2016-08-16 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: This e-book includes the latest outcomes produced by a broad range of fNIRS research with activation of prefrontal cortex, from methodological one to clinical one, providing a forum for scientists planning functional studies of prefrontal brain activation. Reading this book, one will find the possibility that fNIRS could replace fMRI in the near future, and realize that even our aesthetic feeling is measurable. This will serve as a reference repository of knowledge from these fields as well as a conduit of information from leading researchers. In addition it offers an extensive cross-referencing system that will facilitate search and retrieval of information about NIRS measurements in activation studies. Researchers interested in fNIRS would benefit from an overview about its potential utilities for future research directions.
Book Synopsis Near-Infrared Spectroscopy by : Heinz W. Siesler
Download or read book Near-Infrared Spectroscopy written by Heinz W. Siesler and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last few years, near-infrared (NIR) spectroscopy has rapidly developed into an important and extremely useful method of analysis. In fact, for certain research areas and applications, ranging from material science via chemistry to life sciences, it has become an indispensable tool because this fast and cost-effective type of spectroscopy provides qualitative and quantitative information not available from any other technique. This book offers a balanced overview of the fundamental theory and instrumentation of NIR spectroscopy, introducing the material in a readily comprehensible manner. A considerable part of the text is dedicated to practical applications, including sample preparation and investigations of polymers, textiles, drugs, food and animal feed. However, special topics, such as two-dimensional correlation analysis, are also covered in separate chapters. Written by eight experts in different fields, this book presents an introduction to the current state of developments and is valuable to spectroscopists and to practitioners applying NIR spectroscopy as a daily analytical tool.
Book Synopsis Near-Infrared Spectroscopy by : Yukihiro Ozaki
Download or read book Near-Infrared Spectroscopy written by Yukihiro Ozaki and published by Springer Nature. This book was released on 2020-11-13 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides knowledge of the basic theory, spectral analysis methods, chemometrics, instrumentation, and applications of near-infrared (NIR) spectroscopy—not as a handbook but rather as a sourcebook of NIR spectroscopy. Thus, some emphasis is placed on the description of basic knowledge that is important in learning and using NIR spectroscopy. The book also deals with applications for a variety of research fields that are very useful for a wide range of readers from graduate students to scientists and engineers in both academia and industry. For readers who are novices in NIR spectroscopy, this book provides a good introduction, and for those who already are familiar with the field it affords an excellent means of strengthening their knowledge about NIR spectroscopy and keeping abreast of recent developments.
Book Synopsis Near Infrared Spectroscopy by : Behnam Molavi
Download or read book Near Infrared Spectroscopy written by Behnam Molavi and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis FNIRS in Neuroscience and its Emerging Applications by : Ning Liu
Download or read book FNIRS in Neuroscience and its Emerging Applications written by Ning Liu and published by Frontiers Media SA. This book was released on 2022-09-14 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Practical Guide to Interpretive Near-Infrared Spectroscopy by : Jerry Workman Jr.
Download or read book Practical Guide to Interpretive Near-Infrared Spectroscopy written by Jerry Workman Jr. and published by CRC Press. This book was released on 2007-10-26 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Containing focused, comprehensive coverage, Practical Guide to Interpretive Near-Infrared Spectroscopy gives you the tools necessary to interpret NIR spectra. The authors present extensive tables, charts, and figures with NIR absorption band assignments and structural information for a broad range of functional groups, organic compounds, and
Download or read book Neuroergonomics written by Hasan Ayaz and published by Academic Press. This book was released on 2018-11-21 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neuroergonomics: The Brain at Work and in Everyday Life details the methodologies that are useful for keeping an ideal human-machine system up-to-date, along with information on how to prevent potential overload and minimize errors. It discusses neural measures and the proper methods and technologies to maximize performance, thus providing a resource for neuroscientists who want to learn more about the technologies and real-time tools that can help them assess cognitive and motivational states of human operators and close the loop for advanced human-machine interaction. With the advent of new and improved tools that allow monitoring of brain activity in the field and better identification of neurophysiological markers that can index impending overload or fatigue, this book is a timely resource on the topic. Includes neurobiological models to better understand risky decision-making and cognitive countermeasures, augmented cognition, and brain stimulations to enhance performance and mitigate human error Features innovative methodologies and protocols using psychophysiological measurements and brain imaging techniques in realistic operational settings Discusses numerous topics, including cognitive performance in psychological and neurological disorders, brain computer interfaces (BCI), and human performance monitoring in ecological conditions, virtual reality, and serious gaming
Book Synopsis Spectral Classification in the Near Infrared by : Sidney Bailey Parsons
Download or read book Spectral Classification in the Near Infrared written by Sidney Bailey Parsons and published by . This book was released on 1964 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biotechnologies for Plant Mutation Breeding by : Joanna Jankowicz-Cieslak
Download or read book Biotechnologies for Plant Mutation Breeding written by Joanna Jankowicz-Cieslak and published by Springer. This book was released on 2016-12-08 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is open access under a CC BY-NC 2.5 license. This book offers 19 detailed protocols on the use of induced mutations in crop breeding and functional genomics studies, which cover topics including chemical and physical mutagenesis, phenotypic screening methods, traditional TILLING and TILLING by sequencing, doubled haploidy, targeted genome editing, and low-cost methods for the molecular characterization of mutant plants that are suitable for laboratories in developing countries. The collection of protocols equips users with the techniques they need in order to start a program on mutation breeding or functional genomics using both forward and reverse-genetic approaches. Methods are provided for seed and vegetatively propagated crops (e.g. banana, barley, cassava, jatropha, rice) and can be adapted for use in other species.
