Filters








239 Hits in 7.3 sec

Digital signal processing algorithms for the detection of afferent nerve activity recorded from cuff electrodes

B. Upshaw, T. Sinkjaer
1998 IEEE transactions on rehabilitation engineering  
When cutaneous nerve recordings from the calcaneal nerve (innervating the heel area) were used in a dropfoot correction neural prosthesis, the detection percentage and the insensitivity to algorithm parameters  ...  It was determined that the noise typically encountered with nerve-cuff electrode signals is normally (Gaussian) distributed.  ...  Rangoussi (with the National Technical University of Athens), for an excellent explanation of her Ph.D. work on HOS detection algorithms.  ... 
doi:10.1109/86.681183 fatcat:jszfxouuajfj7ijgwo3pcb67tu

A critical review of interfaces with the peripheral nervous system for the control of neuroprostheses and hybrid bionic systems

Xavier Navarro, Thilo B. Krueger, Natalia Lago, Silvestro Micera, Thomas Stieglitz, Paolo Dario
2005 Journal of the peripheral nervous system  
The first section reviews the different types of non-invasive and invasive electrodes, which include surface and muscular electrodes that can record EMG signals from and stimulate the underlying or implanted  ...  A number of neuroprostheses use interfaces with peripheral nerves or muscles for neuromuscular stimulation and signal recording.  ...  Acknowledgements This work was supported by grant IST-001917 (NEUROBOTICS, 'Fusing Neuroscience and Robotics'). funded by the European Commission in the framework of the ''Information Society Technologies  ... 
doi:10.1111/j.1085-9489.2005.10303.x pmid:16221284 fatcat:jtvarkbdybehfk3oe7d2bwrjje

On the viability of implantable electrodes for the natural control of artificial limbs: Review and discussion

Max Ortiz-Catalan, Rickard Brånemark, Bo Håkansson, Jean Delbeke
2012 BioMedical Engineering OnLine  
This paper describes several implantable electrodes and discusses them as a solution for the natural control of artificial limbs.  ...  After scrutinizing different electrode designs and their clinical implementation, we concluded that the epimysial and cuff electrodes are currently promising candidates to achieving a long-term stable  ...  The recording electrode in this experiment was in a bipolar configuration consisting of discs with a 4 mm diameter placed 10 mm apart.  ... 
doi:10.1186/1475-925x-11-33 pmid:22715940 pmcid:PMC3438028 fatcat:nzr7hvkjifd57fdvedbo7jhyty

Sources of Off-Target Effects of Vagus Nerve Stimulation Using the Helical Clinical Lead in Domestic Pigs [article]

Evan N Nicolai, Megan L Settell, Bruce E Knudsen, Andrea L McConico, Brian A Gosink, James K Trevathan, Ian W Baumgart, Erika K Ross, Nicole A Pelot, Warren M Grill, Kenneth J Gustafson, Andrew J Shoffstall (+2 others)
2020 bioRxiv   pre-print
Activation of these muscles generated artifacts in the ENG recordings that may be mistaken for more slowly conducting Aδ-, B-, and C-fibers.  ...  Contraction of the cricoarytenoid muscle occurred at relatively low amplitudes (~0.3 mA), and resulted from activation of motor nerve fibers in the cervical vagus trunk within the electrode cuff which  ...  Dose response 91 curves for EMG and LIFE electrode recordings during VNS were directly compared to dose 92 response curves for stimulation induced reductions in heart rate (bradycardia). 93 By identifying  ... 
doi:10.1101/2020.01.15.907246 fatcat:q7p33gozcvewrm2z5sapddwtfq

Techniques for Chronic, Multisite Neuronal Ensemble Recordings in Behaving Animals

Jerald D. Kralik, Dragan F. Dimitrov, David J. Krupa, Donald B. Katz, Dana Cohen, Miguel A.L. Nicolelis
2001 Methods  
more from the methodological side, in that the technolo-Advances in our understanding of neural systems will go hand gies are now becoming available to record extracelluin hand with improvements in the  ...  We have also electrode implantation in even more brain areas while developed surgical implantation techniques aimed at minimizing recording from larger populations of neurons is a goal brain tissue damage  ...  In our laboratory, a significant reduction in electrode array size was achieved by reducing the size of the connector on the electrode assembly.  ... 
doi:10.1006/meth.2001.1231 pmid:11812202 fatcat:nle3fvyz5bhgnidh5zcdozl2vm

Enhancing the versatility of wireless biopotential acquisition for myoelectric prosthetic control

Rebecca A Bercich, Zhi Wang, Henry Mei, Lauren H Hammer, Kevin L Seburn, Levi J Hargrove, Pedro P Irazoqui
2016 Journal of Neural Engineering  
In this work we describe the fabrication and performance of a fully wireless and batteryless EMG recording system and use of this system to direct virtual and electric-powered limbs in real-time.  ...  The advantage of using MRC to optimize power transfer to a network of wireless devices is exhibited by EMG collected from an array of eight devices placed circumferentially around a human subject's forearm  ...  Acknowledgments Funding This work is sponsored by the Defense Advanced Research Projects Agency (DARPA) MTO under the auspices of Dr Jack Judy through the Space and Naval Warfare Systems Center, Pacific  ... 
doi:10.1088/1741-2560/13/4/046012 pmid:27265358 fatcat:7uggehfcbvfxhjr4cftpfcl4jq

New Stimulation Device to Drive Multiple Transverse Intrafascicular Electrodes and Achieve Highly Selective and Rich Neural Responses

Thomas Guiho, Victor Manuel López-Álvarez, Paul Čvančara, Arthur Hiairrassary, David Andreu, Thomas Stieglitz, Xavier Navarro, David Guiraud
2021 Sensors  
The results highlighted the versatility of this new stimulation device and advocated for the parameterizing of a hyperpolarizing phase before depolarization as well as the use of small pulse widths when  ...  Peripheral Nerve Stimulation (PNS) is a promising approach in functional restoration following neural impairments.  ...  In the same way, the implantation of several electrodes increases the size of the stimulated area and greatly enhances the overall potential of such an approach.  ... 
doi:10.3390/s21217219 pmid:34770527 pmcid:PMC8587292 fatcat:cnh2owkct5fp7idw6efw4nltte

Toward Bioelectronic Medicine-Neuromodulation of Small Peripheral Nerves Using Flexible Neural Clip

Sanghoon Lee, Wendy Yen Xian Peh, Jiahui Wang, Fengyuan Yang, John S. Ho, Nitish V. Thakor, Shih-Cheng Yen, Chengkuo Lee
2017 Advanced Science  
This work was supported by NRF-CRP10-2012-01Program "Peripheral Nerve Prostheses: A Paradigm Shift in Restoring Dexterous Limb Function" (R-719-000-001-281) from the National Research Foundation (NRF),  ...  For the tibial nerve, the I rh was 8 µA, and the T ch was 180 µs. c) The recorded electromyogram (EMG) signals and stimulation pulses of the CP and tibial nerve stimulation. d) The recorded EMG signals  ...  A three-electrode configuration with a silver/ silver chloride (Ag/AgCl) electrode, and mesh Pt electrodes for the reference and counter electrodes, was used for both measurements.  ... 
doi:10.1002/advs.201700149 pmid:29201608 pmcid:PMC5700646 fatcat:4sedtuod2jbq3alsmzk4e7d2ma

Classification of directionally specific vagus nerve activity using an upper airway obstruction model in anesthetized rodents

P Sabetian, Y Sadat-Nejad, Paul B Yoo
2021 Scientific Reports  
A tetrapolar recording nerve cuff electrode was used to measure vagal nerve (VN) activity in a rodent model of upper airway obstruction.  ...  The feasibility of measuring low-noise directionally-sensitive neural activity using a tetrapolar nerve cuff electrode along with the use of an SVM classifier was shown.  ...  The work presented in this article is based on the PhD dissertation of Dr. Parisa Sabetian titled "Directionally sensitive low-noise neural recording using tetrapolar nerve cuff electrode".  ... 
doi:10.1038/s41598-021-89624-3 pmid:34021186 fatcat:jyrpefcryfdazmejtvvyz5d5ti

Biomechanical Assessments in Sports and Ergonomics [chapter]

Pascal Madeleine, Afshin Samani, Mark de, Uwe Kersting
2011 Theoretical Biomechanics  
Acknowledgment The authors are grateful to Danish Agency for Science, Technology and Innovation, Det Obelske Familiefond and Gigtforeningen for partly supporting the present work.  ...  The EMG is recorded from several channels which compose a grid of electrodes over the surface of the muscle.  ...  EMG is usually recorded using classic bipolar surface electrodes. The electrodes are aligned (inter-electrode distance 2 cm) on abraded ethanol-cleaned skin along the direction of the muscle fibres.  ... 
doi:10.5772/21255 fatcat:oocnhgnqufd5xfwhp3ahh5p54i

Intrathoracic phrenic pacing: A 10-year experience in France

Françoise Le Pimpec-Barthes, Jésus Gonzalez-Bermejo, Jean-Pierre Hubsch, Alexandre Duguet, Capucine Morélot-Panzini, Marc Riquet, Thomas Similowski
2011 Journal of Thoracic and Cardiovascular Surgery  
Phrenic pacing is an alternative to positive-pressure ventilation in selected patients, mostly in cases of upper spinal cord injury.  ...  Quadripolar cuff electrodes were fixed around each intrathoracic phrenic nerve via bilateral VATS.  ...  We are grateful to Pasi Talonen and Serge Renaux for technical help during the intervention and their general support.  ... 
doi:10.1016/j.jtcvs.2011.04.033 pmid:21620417 fatcat:jnyvdwmxnrhlpf4kikpd3n3hle

Safety of neural monitoring in thyroid surgery

Gianlorenzo Dionigi, Feng-Yu Chiang, Henning Dralle, Luigi Boni, Stefano Rausei, Francesca Rovera, Eliana Piantanida, Alberto Mangano, Marcin Barczyński, Gregory W. Randolph, Renzo Dionigi, Christoph Ulmer
2013 International Journal of Surgery  
A B S T R A C T During thyroid surgery, the functional integrity of the recurrent laryngeal nerve (RLN) is not only threatened by direct nerve injury resulting from accidental transection, clipping or  ...  IONM should be a team work between the surgeon and the anesthesiologist.  ...  In a series of 40 patients comparing HRVA in C-IONM vs. I-IONM we demonstrated a reduction of overall ANS activity with induction of general anesthesia in both groups (I-IONM vs. C-IONM).  ... 
doi:10.1016/s1743-9191(13)60031-x pmid:24380543 fatcat:ttsi6u47pbe6bl4li7ut6towkm

A review of portable FES-based neural orthoses for the correction of drop foot

G.M. Lyons, T. Sinkjaer, J.H. Burridge, D.J. Wilcox
2002 IEEE transactions on neural systems and rehabilitation engineering  
The review examines the role of artificial and "natural" sensors as replacements for the foot-switch as the primary control sensor in drop foot stimulators.  ...  This paper reviews the technological developments in neural orthoses for the correction of upper motor neurone drop foot since 1961, when the technique was first proposed by Liberson and his co-workers  ...  Ruža Ačimovič of the Institut Jožef Stefan, Ljubljana, Slovenia, for providing assistance relating to DFS developments at Ljubljana and production numbers for the Ljubljana stimulators.  ... 
doi:10.1109/tnsre.2002.806832 pmid:12611364 fatcat:epbo7sgsajb3tfbau3qdpdjqay

Using evoked EMG as a synthetic force sensor of isometric electrically stimulated muscle

A. Erfanian, H.J. Chizeck, R.M. Hashemi
1998 IEEE Transactions on Biomedical Engineering  
In addition, a method is developed that accomplishes automatic recalibration of the model to account for day-to-day changes in pickup electrode mounting as well as other factors contributing to EEMG gain  ...  This work represents a promising approach to the real-time estimation of stimulated muscle force in functional neuromuscular stimulation applications.  ...  A 3-cm interelectrode spacing and 5-mm diameter EMG electrodes were used, in the configuration shown in Fig. 3 .  ... 
doi:10.1109/10.661267 pmid:9473842 fatcat:ew2p6m67oza3hmc2jf4xcmfjhq

Comparison of three ENG tripolar cuff recording configurations

I.F. Triantis, A. Demosthenous, N. Donaldson
First International IEEE EMBS Conference on Neural Engineering, 2003. Conference Proceedings.  
Cuff electrodes are a safe and reliable technique for long-term recording of the electroneurogram (ENG) from peripheral nerves.  ...  In this paper, the signal-tointerference ratios of the three tripolar cuff recording configurations are compared in-vivo in the presence of cuff imbalance.  ...  ACKNOWLEDGMENT The authors would like to thank Professor J. J. Struijk of Aalborg University, Denmark, for organizing and hosting the experiments.  ... 
doi:10.1109/cne.2003.1196836 fatcat:lq3iycacwnf7nlak4mltf7li4e
« Previous Showing results 1 — 15 out of 239 results