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Author : Justin Chan
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book Online Near-infrared Spectroscopy Brain-computer Interfaces with Real-time Feedback written by Justin Chan and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sabine Angelika Weyand
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book A Neurofeedback-based Near-infrared Spectroscopy Brain-computer Interface written by Sabine Angelika Weyand and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shirley Marie-Claire Coyle
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (142 download)
Download or read book Near-infrared Spectroscopy for Brain Computer Interfacing written by Shirley Marie-Claire Coyle and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Guido Dornhege
Publisher : MIT Press
ISBN 13 : 0262042444
Total Pages : 520 pages
Book Rating : 4.2/5 (62 download)
Download or read book Toward Brain-computer Interfacing written by Guido Dornhege and published by MIT Press. This book was released on 2007 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a timely overview of the latest BCI research, with contributions from many of the important research groups in the field.
Author : Larissa Christina Schudlo
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (133 download)
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.
Author : Kelly Tai
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
Download or read book Near-infrared Spectroscopy Signal Classification written by Kelly Tai and published by . This book was released on 2010 with total page 0 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.
Author : Pablo Diez
Publisher : Academic Press
ISBN 13 : 0128128933
Total Pages : 494 pages
Book Rating : 4.1/5 (281 download)
Download or read book Smart Wheelchairs and Brain-computer Interfaces written by Pablo Diez and published by Academic Press. This book was released on 2018-05-29 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smart Wheelchairs and Brain-Computer Interfaces: Mobile Assistive Technologies combines the fields of neuroscience, rehabilitation and robotics via contributions from experts in their field to help readers develop new mobile assistive technologies. It provides information on robotics, control algorithm design for mobile robotics systems, ultrasonic and laser sensors for measurement and trajectory planning, and is ideal for researchers in BCI. A full view of this new field is presented, giving readers the current research in the field of smart wheelchairs, potential control mechanisms and human interfaces that covers mobility, particularly powered mobility, smart wheelchairs, particularly sensors, control mechanisms, and human interfaces. Presents the first book that combines BCI and mobile robotics Focuses on fundamentals and developments in assistive robotic devices which are commanded by alternative ways, such as the brain Provides an overview of the technologies that are already available to support research and the development of new products
Author : Nicole Proulx
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
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.
Author : Erica Floreani
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
Download or read book A Novel Near-infrared Spectroscopy Brain-computer Interface for the Detection of Emotional Valence in Children written by Erica Floreani and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brain-computer interfaces (BCI) are being investigated as an access pathway to communication for individuals with physical disabilities as they bypass the need for voluntary motor control to operate. However, to date, minimal research has investigated the use of BCIs for children. This thesis describes the development of a paediatric brain-computer interface to identify positive and negative emotional states from changes in hemodynamic activity of the pre-frontal cortex. To train and test the BCI, 10 typically developing children aged 8-14 underwent a session of emotion induction trials while their hemodynamic activity was measured with near-infrared spectroscopy (NIRS). BCI performance was evaluated both offline, using cross-validation, and online, using real-time prediction results. Offline differentiation rates were comparable to studies with adult populations, and online prediction was feasible, yet failed to surpass the 70% accuracy threshold of 'effective' BCI use. Interparticipant and intersession variability in BCI performance was also investigated.
Author : Kazuki Yanagisawa
Publisher :
ISBN 13 : 9789535105381
Total Pages : pages
Book Rating : 4.1/5 (53 download)
Download or read book Brain-Computer Interface Using Near-Infrared Spectroscopy for Rehabilitation written by Kazuki Yanagisawa and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stefanie Esther Glowinsky
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
Download or read book Developing an Auditory Hybrid Brain-computer Interface Based on Near-infrared Spectroscopy and Electroencephalography written by Stefanie Esther Glowinsky and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Auditory brain-computer interfaces (BCIs) serve as an access pathway for individuals who present as locked-in and have concomitant visual impairments, but they do not perform as well as visual BCIs. Since hybrid BCIs that combine electroencephalography (EEG) and near-infrared spectroscopy (NIRS) outperform unimodal BCIs in motor imagery tasks, we hypothesized that such a hybrid BCI would outperform a unimodal BCI in an auditory oddball task. Eleven non-disabled adults (aged 25.6 Âą 3.3) participated in two offline sessions and eight returned for a third online session. While combined EEG-NIRS classification did not outperform EEG-exclusive classification, combined classification does show modest gains in 2 participants when using all the NIRS data but constraining the EEG data to only a single oddball. In conclusion, NIRS offers limited benefits in terms of classification in a prolonged auditory task paradigm, but future research should focus on optimizing task duration for EEG and NIRS classification.
Author : Nobuo Masataka
Publisher : Frontiers Media SA
ISBN 13 : 2889199444
Total Pages : 195 pages
Book Rating : 4.8/5 (891 download)
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.
Author : Larissa Christina Schudlo
Publisher :
ISBN 13 : 9780494930113
Total Pages : pages
Book Rating : 4.9/5 (31 download)
Download or read book Development of an Optical Brain-Computer Interface Using Dynamic Topographical Pattern Classification written by Larissa Christina Schudlo and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tom Gross
Publisher : Springer Science & Business Media
ISBN 13 : 3642036570
Total Pages : 1036 pages
Book Rating : 4.6/5 (42 download)
Download or read book Human-Computer Interaction - INTERACT 2009 written by Tom Gross and published by Springer Science & Business Media. This book was released on 2009-08-06 with total page 1036 pages. Available in PDF, EPUB and Kindle. Book excerpt: INTERACT 2009 was the 12th of a series of INTERACT international c- ferences supported by the IFIP Technical Committee 13 on Human–Computer Interaction. This year,INTERACT washeld in Uppsala (Sweden), organizedby the Swedish Interdisciplinary Interest Group for Human–Computer Interaction (STIMDI) in cooperation with the Department of Information Technology at Uppsala University. Like its predecessors, INTERACT 2009 highlighted, both to the academic and to the industrial world, the importance of the human–computer interaction (HCI) area and its most recent breakthroughs on current applications. Both - perienced HCI researchers and professionals, as well as newcomers to the HCI ?eld, interested in designing or evaluating interactive software, developing new interaction technologies, or investigating overarching theories of HCI, found in INTERACT 2009 a great forum for communication with people of similar int- ests, to encourage collaboration and to learn. INTERACT 2009 had Research and Practice as its special theme. The r- son we selected this theme is that the research within the ?eld has drifted away from the practicalapplicability of its results and that the HCI practice has come to disregard the knowledge and development within the academic community.
Author : Andrew Talor Wong
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
Download or read book Systematic Quantification of Superficial Blood Flow in Near Infrared Spectroscopy Brain Computer Interfaces in a Pediatric Context written by Andrew Talor Wong and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brain-computer interfaces (BCIs) have been developed as an access pathway for individuals who present as locked-in, but only in adults. Near-infrared spectroscopy (NIRS) signals have been suspected to be influenced by superficial blood flow signals, suggesting that its removal may result in better BCI classification accuracy. Seven typically developing children aged 8-12 participated in three offline sessions in order to assess the suitability of NIRS-BCIs in children, and to examine the effect of superficial blood flow on classification accuracy. Superficial flow was induced using a five-minute bicycle task, and the deep signal was extracted using the multi-distance independent component analysis method. Our results yielded an average classification accuracy of 76.7Âą8.3% with six participants achieving the 70% threshold for an effective BCI. We demonstrated that the induced superficial flow was able to significantly affect BCI classification accuracy, but removal of the superficial signal offered no or limited benefit in children.
Author : Rodrigo Costa-Felix
Publisher : Springer
ISBN 13 : 9811321191
Total Pages : 869 pages
Book Rating : 4.8/5 (113 download)
Download or read book XXVI Brazilian Congress on Biomedical Engineering written by Rodrigo Costa-Felix and published by Springer. This book was released on 2019-06-03 with total page 869 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the proceedings of the Brazilian Congress on Biomedical Engineering (CBEB 2018). The conference was organised by the Brazilian Society on Biomedical Engineering (SBEB) and held in Armação de Buzios, Rio de Janeiro, Brazil from 21-25 October, 2018. Topics of the proceedings include these 11 tracks: • Bioengineering • Biomaterials, Tissue Engineering and Artificial Organs • Biomechanics and Rehabilitation • Biomedical Devices and Instrumentation • Biomedical Robotics, Assistive Technologies and Health Informatics • Clinical Engineering and Health Technology Assessment • Metrology, Standardization, Testing and Quality in Health • Biomedical Signal and Image Processing • Neural Engineering • Special Topics • Systems and Technologies for Therapy and Diagnosis
Author : Fiachra Matthews
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (142 download)
Download or read book Integrated Real-time Control and Processing Systems for Multi-channel Near-infrared Spectroscopy Based Brain Computer Interfaces written by Fiachra Matthews and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
