40 Hits in 4.3 sec

Creating the Feedback Loop

Adam O. Hebb, Jun Jason Zhang, Mohammad H. Mahoor, Christos Tsiokos, Charles Matlack, Howard Jay Chizeck, Nader Pouratian
2014 Neurosurgery clinics of North America  
This open-loop design is effective for movement disorders, but therapy may be further optimized by a closed loop design.  ...  The technology to record biosignals has outpaced our understanding of their relationship to the clinical state of the whole person.  ...  LFP can be measured with an array of electrodes, including the same microelectrodes that are used for detection of unit activity as well as standard DBS leads and subcortical electrocorticographic strips  ... 
doi:10.1016/ pmid:24262909 pmcid:PMC4058859 fatcat:cvxhliuwpzhlxoh3buyll62izu

Proceedings of the Fourth International Workshop on Advances in Electrocorticography

Anthony Ritaccio, Peter Brunner, Nathan E. Crone, Aysegul Gunduz, Lawrence J. Hirsch, Nancy Kanwisher, Brian Litt, Kai Miller, Daniel Moran, Josef Parvizi, Nick Ramsey, Thomas J. Richner (+3 others)
2013 Epilepsy & Behavior  
Presentations covered a broad range of topics, including innovations in passive functional mapping, increased understanding of pathologic high-frequency oscillations, evolving sensor technologies, a human  ...  The proceedings of the workshop serves as an accurate record of the most contemporary clinical and experimental work on brain surface recording and represents the insights of a unique multidisciplinary  ...  McFarland and Wolpaw [18] discuss optimal AR model order selection.  ... 
doi:10.1016/j.yebeh.2013.08.012 pmid:24034899 pmcid:PMC3896917 fatcat:mg52e6mrlbff3n2d2qjv5vnwxq

Cooperative Human-Centric Sensing Connectivity [chapter]

Albena Mihovska, Mahasweta Sarkar
2018 Internet of Things - Technology, Applications and Standardization  
of the sensor streams.  ...  In a typical HCS scenario, there may be many hundreds of sensor stream connections, centered around the human, who would be the determining factor for the number, the purpose, the direction, and the frequency  ...  Acknowledgements Some of the research work on BCI presented in this chapter was supported by award number EEC-1028725 from the National Science Foundation (NSF).  ... 
doi:10.5772/intechopen.76158 fatcat:ir7ojy4dejcz3gciklkzjjkvcy

ECoG high gamma activity reveals distinct cortical representations of lyrics passages, harmonic and timbre-related changes in a rock song

Irene Sturm, Benjamin Blankertz, Cristhian Potes, Gerwin Schalk, Gabriel Curio
2014 Frontiers in Human Neuroscience  
ECoG high gamma activity reveals distinct cortical representations of lyrics passages, harmonic and timbre-related changes in a rock song."  ...  For instance, selecting a biologically plausible time lag of 100 ms, based on Kubanek et al. (2013) where the optimal (averaged) time lag for tracking the speech envelope ranged between 86.7 and 89.9  ...  the human voice that has been found to effect ECoG gamma activity even for (unintelligible) reversed speech in Brown et al. (2014) .  ... 
doi:10.3389/fnhum.2014.00798 pmid:25352799 pmcid:PMC4195312 fatcat:tfgu44n2w5bk3atjrpc7pen2k4

Concurrent MEG-articulography for investigating neuromotor control of speech articulation [article]

Blake W Johnson, Qingqing Meng, Ioanna Anastasopoulou, Louise Ratko, Tunde Szalay, Michael Proctor, Cecelia Jobst, Pascal van Lieshout, Douglas O Cheyne
2020 bioRxiv   pre-print
movements during speech together with concurrent magnetoencephalographic (MEG) measurements of neuromotor brain activity.  ...  Here we describe results from a novel articulography system dubbed Magneto-articulography for the Assessment of Speech Kinematics (MASK), used for the first time to obtain kinematic profiles of oro-facial  ...  This will substantially improve the optimization of sensor placements during the experiment.  ... 
doi:10.1101/2020.02.05.934489 fatcat:5db4p4q3sbbifijdign2kka6dq

Brain-computer interface: the future in the present
Интерфейс мозг–компьютер: будущее в настоящем

O. S. Levitskaya, M. A. Lebedev
2016 Bulletin of Russian State Medical University  
BCIs of various kinds are currently developing very rapidly, aided by the progress in computer science, robotic applications, neurophysiological techniques for recording brain activity and mathematical  ...  Brain-computer interfaces (BCIs) are a promising technology intended for the treatment of diseases and trauma of the nervous system.  ...  to detect the activity of every brain area [73] .  ... 
doi:10.24075/brsmu.2016-02-01 fatcat:arssbfnrnzewjor5xodbpiwds4

Speech synthesis from neural decoding of spoken sentences

Gopala K. Anumanchipalli, Josh Chartier, Edward F. Chang
2019 Nature  
Technology that translates neural activity into speech would be transformative for people who are unable to communicate as a result of neurological impairments.  ...  Decoding speech from neural activity is challenging because speaking requires very precise and rapid multi-dimensional control of vocal tract articulators.  ...  Moses for comments on the manuscript and B. Speidel for his help reconstructing MRI images. This work was supported by grants from the NIH (DP2 OD008627 and U01 NS098971-01).  ... 
doi:10.1038/s41586-019-1119-1 pmid:31019317 fatcat:7taeckhko5fhnbk4gwio4y2ogy

Assessing dynamics, spatial scale, and uncertainty in task-related brain network analyses

Emily P. Stephen, Kyle Q. Lepage, Uri T. Eden, Peter Brunner, Gerwin Schalk, Jonathan S. Brumberg, Frank H. Guenther, Mark A. Kramer
2014 Frontiers in Computational Neuroscience  
A common technique to probe these interactions involves multi-sensor recordings of brain activity during a repeated task.  ...  The general strategy described here-appropriate for static and dynamic network inference and different statistical measures of coupling-permits the evaluation of confidence in network measures in a variety  ...  ACKNOWLEDGMENTS This research was supported in part by National Institutes of Health grants F31 DC011663 (Emily P.  ... 
doi:10.3389/fncom.2014.00031 pmid:24678295 pmcid:PMC3958753 fatcat:22sb32yrl5eqngk5cti7cdsmhi

Brain–computer symbiosis

Gerwin Schalk
2008 Journal of Neural Engineering  
The theoretical groundwork of the 1930s and 1940s and the technical advance of computers in the following decades provided the basis for dramatic increases in human efficiency.  ...  and implications of a technology that I anticipate will be a major source of pervasive changes in the coming decades.  ...  I am also indebted to Dr Greg Hughes for many invaluable discussions and for critical reviews of this paper. Without him, this paper would not exist.  ... 
doi:10.1088/1741-2560/5/1/p01 pmid:18310804 pmcid:PMC2722922 fatcat:ofbiexqqibdhvo2xt52hiqe5ea

Brain-Computer Interfaces in Medicine

Jerry J. Shih, Dean J. Krusienski, Jonathan R. Wolpaw
2012 Mayo Clinic proceedings  
From initial demonstrations of electroencephalography-based spelling and single-neuron-based device control, researchers have gone on to use electroencephalographic, intracortical, electrocorticographic  ...  Brain-computer interfaces may also prove useful for rehabilitation after stroke and for other disorders. In the future, they might augment the performance of surgeons or other medical professionals.  ...  Thus, for example, a voice-activated or muscle-activated communication system is not a BCI.  ... 
doi:10.1016/j.mayocp.2011.12.008 pmid:22325364 pmcid:PMC3497935 fatcat:kne4tks255dqdclthe3f66qywu

A Feedback Information-Theoretic Approach to the Design of Brain–Computer Interfaces

Cyrus Omar, Abdullah Akce, Miles Johnson, Timothy Bretl, Rui Ma, Edward Maclin, Martin McCormick, Todd P. Coleman
2010 International Journal of Human-Computer Interaction  
This article presents a new approach to designing brain-computer interfaces (BCIs) that explicitly accounts for both the uncertainty of neural signals and the important role of sensory feedback.  ...  This scheme is not only provably optimal but also easily understood and implemented by a human user.  ...  Coleman by a Seed Grant from the Center for Healthy Minds, funded through NIH/NIA under Award No. P30-AG023101; to Timothy Bretl by awards NSF-CNS-0931871 and NSF-CMMI-0956362-EAGER; to Todd P.  ... 
doi:10.1080/10447318.2011.535749 fatcat:u2wu3n6hujhp5lzlcuj2lenyxy

Electrocorticographic high gamma activity versus electrical cortical stimulation mapping of naming

Alon Sinai, Christopher W. Bowers, Ciprian M. Crainiceanu, Dana Boatman, Barry Gordon, Ronald P. Lesser, Frederick A. Lenz, Nathan E. Crone
2005 Brain  
Subdural electrocorticographic (ECoG) recordings in patients undergoing epilepsy surgery have shown that functional activation is associated with event-related broadband gamma activity in a higher frequency  ...  To investigate the utility of this high gamma activity (HGA) for mapping language cortex, we compared its neuroanatomical distribution with functional maps derived from electrical cortical stimulation  ...  The work of D.B. was supported by NIDCD R01 DC005645. The work of B.G. was supported by R01 NS26553 and R01 NS29973. The work of F.A.L. was supported by R01 NS38493 and R01 NS40059.  ... 
doi:10.1093/brain/awh491 pmid:15817517 fatcat:ce3diyiybvdhpgbbhb5wq7agvq

Using Coherence-based spectro-spatial filters for stimulus features prediction from electro-corticographic recordings

Jaime Delgado Saa, Andy Christen, Stephanie Martin, Brian N. Pasley, Robert T. Knight, Anne-Lise Giraud
2020 Scientific Reports  
(group averages of 0.74 for motor movements, 0.84 for speech perception, and 0.74 for speech production) in comparison with other methods based on regularized multivariate regression, probabilistic graphical  ...  of stationarity.  ...  Kai Miller for providing access to the data-sets used in this work.  ... 
doi:10.1038/s41598-020-63303-1 pmid:32376909 pmcid:PMC7203138 fatcat:rajl3wh6vbbhrjz346rmcq6qpm

Decoding Speech for Understanding and Treating Aphasia [chapter]

Brian N. Pasley, Robert T. Knight
2013 Progress in Brain Research  
activity.  ...  Recent results of this approach are discussed in the context of applications to understanding the neural basis of aphasia symptoms and the potential to optimize plasticity during the rehabilitation process  ...  higher-order selectivity for frequency conjunctions.  ... 
doi:10.1016/b978-0-444-63327-9.00018-7 pmid:24309265 pmcid:PMC4043958 fatcat:gakyqxyphzftjhps7u4wzid5nu

Human Brain Mapping with Multi-Thousand Channel PtNRGrids Resolves Novel Spatiotemporal Dynamics [article]

Youngbin Tchoe, Andrew M. Bourhis, Daniel R. Cleary, Brittany Stedelin, Jihwan Lee, Karen J. Tonsfeldt, Erik C. Brown, Dominic Siler, Angelique C. Paulk, Jimmy C. Yang, Hongseok Oh, Yun Goo Ro (+8 others)
2021 arXiv   pre-print
Additionally, the PtNRGrids identified the spatial spread and dynamics of epileptic discharges in a patient undergoing epilepsy surgery at 1 mm spatial resolution, including activity induced by direct  ...  Electrophysiological devices are critical for mapping eloquent and diseased brain regions and for therapeutic neuromodulation in clinical settings and are extensively utilized for research in brain-machine  ...  Eric Halgren of UC San Diego and Prof. Sydney Cash of Massachusetts General Hospital, and Prof. Anna Devor and Prof. Martin  ... 
arXiv:2103.09206v3 fatcat:o5umjsmfcbf3lbtyfxxqlwqn6u
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