RICHARD NORMANN

Summary

Affiliation: University of Utah
Country: USA

Publications

  1. pmc Coordinated, multi-joint, fatigue-resistant feline stance produced with intrafascicular hind limb nerve stimulation
    R A Normann
    Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
    J Neural Eng 9:026019. 2012
  2. ncbi request reprint Control of skeletal muscle force with currents injected via an intrafascicular, microelectrode array
    RICHARD NORMANN
    Member, IEEE, Professor of Bioengineering and Ophthalmology at the University of Utah, Salt Lake City, UT USA 84112 801 581 7645 fax 801 581 8966 e mail
    Conf Proc IEEE Eng Med Biol Soc 7:7644-7. 2005
  3. ncbi request reprint Technology insight: future neuroprosthetic therapies for disorders of the nervous system
    Richard A Normann
    Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
    Nat Clin Pract Neurol 3:444-52. 2007
  4. doi request reprint Muscle-selective block using intrafascicular high-frequency alternating current
    Brett R Dowden
    Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112, USA
    Muscle Nerve 42:339-47. 2010
  5. ncbi request reprint Interleaved, multisite electrical stimulation of cat sciatic nerve produces fatigue-resistant, ripple-free motor responses
    Daniel McDonnall
    Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
    IEEE Trans Neural Syst Rehabil Eng 12:208-15. 2004
  6. ncbi request reprint Long-term stimulation and recording with a penetrating microelectrode array in cat sciatic nerve
    Almut Branner
    Center for Neural Interfaces, Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
    IEEE Trans Biomed Eng 51:146-57. 2004
  7. ncbi request reprint Electrophysiological mapping of cat primary auditory cortex with multielectrode arrays
    Seung Jae Kim
    The Department of Bioengineering, The University of Utah, Salt Lake City, UT 84112, USA
    Ann Biomed Eng 34:300-9. 2006
  8. ncbi request reprint Discrete stimulus estimation from neural responses in the turtle retina
    K Shane Guillory
    Center for Neural Interfaces, Department of Bioengineering, University of Utah, Salt Lake City, 84112, USA
    Vision Res 46:1876-85. 2006
  9. doi request reprint Thermal impact of an active 3-D microelectrode array implanted in the brain
    Sohee Kim
    Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112, USA
    IEEE Trans Neural Syst Rehabil Eng 15:493-501. 2007
  10. doi request reprint Encapsulation of an integrated neural interface device with Parylene C
    Jui Mei Hsu
    Department ofMaterials Science and Engineering, University of Utah, Salt Lake City, UT 84112, USA
    IEEE Trans Biomed Eng 56:23-9. 2009

Research Grants

Collaborators

Detail Information

Publications29

  1. pmc Coordinated, multi-joint, fatigue-resistant feline stance produced with intrafascicular hind limb nerve stimulation
    R A Normann
    Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
    J Neural Eng 9:026019. 2012
    ..This muscle activation paradigm could provide a promising neuroprosthetic approach for the restoration of sit-to-stand transitions in individuals who are paralyzed by spinal cord injury, stroke or disease...
  2. ncbi request reprint Control of skeletal muscle force with currents injected via an intrafascicular, microelectrode array
    RICHARD NORMANN
    Member, IEEE, Professor of Bioengineering and Ophthalmology at the University of Utah, Salt Lake City, UT USA 84112 801 581 7645 fax 801 581 8966 e mail
    Conf Proc IEEE Eng Med Biol Soc 7:7644-7. 2005
    ..These problems, and their mitigation by one embodiment of an intrafascicular electrode array, the Utah Slanted Electrode Array, are the subject of this paper...
  3. ncbi request reprint Technology insight: future neuroprosthetic therapies for disorders of the nervous system
    Richard A Normann
    Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
    Nat Clin Pract Neurol 3:444-52. 2007
    ..In this Review, three examples of this new generation of microelectrode arrays are described, as are potential therapeutic applications in blindness and spinal cord injury, and for the control of prosthetic limbs...
  4. doi request reprint Muscle-selective block using intrafascicular high-frequency alternating current
    Brett R Dowden
    Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112, USA
    Muscle Nerve 42:339-47. 2010
    ..These results show that intrafascicular HFAC can be used to block selected muscles independent of activation of other muscles...
  5. ncbi request reprint Interleaved, multisite electrical stimulation of cat sciatic nerve produces fatigue-resistant, ripple-free motor responses
    Daniel McDonnall
    Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
    IEEE Trans Neural Syst Rehabil Eng 12:208-15. 2004
    ..The effectiveness of this physiologically based stimulation paradigm encourages its application in the field of motor neuroprosthetics...
  6. ncbi request reprint Long-term stimulation and recording with a penetrating microelectrode array in cat sciatic nerve
    Almut Branner
    Center for Neural Interfaces, Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
    IEEE Trans Biomed Eng 51:146-57. 2004
    ..The recorded sensory signals, however, were not stable over time. A histological analysis performed on all implanted tissues indicated that the morphology and fiber density of the nerve around the electrodes were normal...
  7. ncbi request reprint Electrophysiological mapping of cat primary auditory cortex with multielectrode arrays
    Seung Jae Kim
    The Department of Bioengineering, The University of Utah, Salt Lake City, UT 84112, USA
    Ann Biomed Eng 34:300-9. 2006
    ..53 +/- 0.08 octave per millimeter. This study demonstrates the use of high electrode count, microelectrode array recordings in characterizing the spatial distribution of acoustic information in the feline AI...
  8. ncbi request reprint Discrete stimulus estimation from neural responses in the turtle retina
    K Shane Guillory
    Center for Neural Interfaces, Department of Bioengineering, University of Utah, Salt Lake City, 84112, USA
    Vision Res 46:1876-85. 2006
    ..Statistical dependency issues and the effects of stationarity on the estimation method are also discussed...
  9. doi request reprint Thermal impact of an active 3-D microelectrode array implanted in the brain
    Sohee Kim
    Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112, USA
    IEEE Trans Neural Syst Rehabil Eng 15:493-501. 2007
    ..029 degree C/mW over the power dissipation levels expected to be used. The influences of blood perfusion, brain metabolism, and UEA geometry on tissue heating were also investigated using the numerical model...
  10. doi request reprint Encapsulation of an integrated neural interface device with Parylene C
    Jui Mei Hsu
    Department ofMaterials Science and Engineering, University of Utah, Salt Lake City, UT 84112, USA
    IEEE Trans Biomed Eng 56:23-9. 2009
    ..Also, oxygen plasma etching was found to be an effective method to etch and pattern Parylene-C films...
  11. doi request reprint Automated stimulus-response mapping of high-electrode-count neural implants
    Andrew M Wilder
    School of Computing, University of Utah, Salt Lake City, UT 84112, USA
    IEEE Trans Neural Syst Rehabil Eng 17:504-11. 2009
    ..87 s. These results demonstrate the utility of our FES platform by showing that it can be used to completely automate a typically time- and effort-intensive procedure associated with using HEC devices...
  12. doi request reprint Selective and graded recruitment of cat hamstring muscles with intrafascicular stimulation
    Brett R Dowden
    Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
    IEEE Trans Neural Syst Rehabil Eng 17:545-52. 2009
    ....
  13. ncbi request reprint Acute microelectrode array implantation into human neocortex: preliminary technique and histological considerations
    Paul A House
    Department of Neurological Surgery, University of Utah Health Sciences Center, Salt Lake City, Utah 84132 2303, USA
    Neurosurg Focus 20:E4. 2006
    ..The authors investigate the ability to transfer array insertion techniques to humans and examine the acute response of human cortical tissue to array implantation...
  14. ncbi request reprint Electrode independence in intraneural cochlear nerve stimulation
    Arunkumar N Badi
    Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112, USA
    Otol Neurotol 28:16-24. 2007
    ..In this article, we report the electrophysiological characterization of the selective activation of subpopulations of cochlear nerve fibers via electrodes implanted in feline cochlear nerve...
  15. ncbi request reprint A technique for implantation of a 3-dimensional penetrating electrode array in the modiolar nerve of cats and humans
    Arunkumar N Badi
    Department of Bioengineering, The University of Utah, 20 S 2030E, Room 506, Salt Lake City, UT 84112, USA
    Arch Otolaryngol Head Neck Surg 128:1019-25. 2002
    ....
  16. ncbi request reprint Cochlear nerve stimulation with a 3-dimensional penetrating electrode array
    Todd Hillman
    Department of Otolaryngology, University of Utah, Salt Lake City, Utah 84132, USA
    Otol Neurotol 24:764-8. 2003
    ..An array of penetrating microelectrodes can be implanted into the cochlear nerve to produce stable evoked responses with important electrophysiologic advantages over conventional electrode technology...
  17. ncbi request reprint Selective motor unit recruitment via intrafascicular multielectrode stimulation
    Daniel McDonnall
    Department of Bioengineering, University of Utah, 20 S 2030 E, Room 506 BPRB, Salt Lake City, UT 84112, USA
    Can J Physiol Pharmacol 82:599-609. 2004
    ....
  18. ncbi request reprint Spatiotemporal encoding of a bar's direction of motion by neural ensembles in cat primary visual cortex
    David J Warren
    Department of Bioengineering, University of Utah, Salt Lake City, UT 84112 9458, USA
    Ann Biomed Eng 32:1265-75. 2004
    ..These results suggest that models utilizing both generalist and specialist neurons may better reflect the encoding mechanisms that take place in sensory pathways...
  19. ncbi request reprint Robust, automatic spike sorting using mixtures of multivariate t-distributions
    Shy Shoham
    Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
    J Neurosci Methods 127:111-22. 2003
    ..Our algorithm determines the number of units in multiunit neural recordings, even in the presence of significant noise contamination resulting from random threshold crossings and overlapping spikes...
  20. doi request reprint An automated system for measuring tip impedance and among-electrode shunting in high-electrode count microelectrode arrays
    Kabilar Gunalan
    Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
    J Neurosci Methods 178:263-9. 2009
    ..These rapid and repeatable measurements allow for the quantitative assessment of high-electrode-count arrays over time...
  21. ncbi request reprint Preliminary study of the thermal impact of a microelectrode array implanted in the brain
    Sohee Kim
    Dept of Electr and Comput Sci, Utah Univ, Salt Lake City, UT 84112, USA
    Conf Proc IEEE Eng Med Biol Soc 1:2986-9. 2006
    ..A temperature increase in the brain tissue was predicted using preliminary simulations with simplified models. The model and method used in the simulations were verified by simple in vitro experiments...
  22. ncbi request reprint Selective activation of cat primary auditory cortex by way of direct intraneural auditory nerve stimulation
    Seung Jae Kim
    Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112, USA
    Laryngoscope 117:1053-62. 2007
    ..Such an approach should provide focal stimulation and selective activation of the nerve fibers, thereby minimizing cross-talk among implanted stimulating electrodes and evoking narrow-band frequency percepts...
  23. ncbi request reprint Functional reorganization of primary visual cortex induced by electrical stimulation in the cat
    David J Warren
    Department of Bioengineering, University of Utah, 20 S 2030 E, Rm 506, Salt Lake City, UT 84112, USA
    Vision Res 45:551-65. 2005
    ..We found the receptive field size and synaptic efficacy can be increased, particularly for neurons near the stimulation site. As the changes are minimal, these results are not expected to impact neuroprosthetic applications...
  24. pmc Long term in vitro functional stability and recording longevity of fully integrated wireless neural interfaces based on the Utah Slant Electrode Array
    Asha Sharma
    Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112, USA
    J Neural Eng 8:045004. 2011
    ....
  25. pmc Toward the development of a cortically based visual neuroprosthesis
    Richard A Normann
    Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
    J Neural Eng 6:035001. 2009
    ..Continued research will hopefully lead to the development of and design specifications for the first generation of a cortically based visual prosthesis system...
  26. ncbi request reprint Development of a novel eighth-nerve intraneural auditory neuroprosthesis
    Arunkumar N Badi
    Department of Bioengineering, University of Utah, Salt Lake City, 84112, USA
    Laryngoscope 113:833-42. 2003
    ..A novel auditory neuroprosthesis is proposed that is expected to overcome these problems by implanting an array of three-dimensional microelectrodes, the Utah Electrode Array, directly into the cochlear nerve...
  27. ncbi request reprint Capabilities of a penetrating microelectrode array for recording single units in dorsal root ganglia of the cat
    Yoichiro Aoyagi
    Department of Physiology and Centre for Neuroscience, University of Alberta, 513 Heritage Medical Research Centre, Edmonton Alta, Canada T6G 2S2
    J Neurosci Methods 128:9-20. 2003
    ..The recording selectivity and stability of the array, coupled with the large number of neurons that can be recorded simultaneously, provide attractive features for better understanding sensorimotor control principles...
  28. ncbi request reprint New functional electrical stimulation approaches to standing and walking
    Vivian K Mushahwar
    Department of Cell Biology and Center for Neuroscience, University of Alberta, Edmonton, AB, Canada
    J Neural Eng 4:S181-97. 2007
    ..We conclude with a general discussion of the common needs of the neuroprosthetic devices presented in this paper and the improvements that may be incorporated in the future to advance their clinical utility and user satisfaction...
  29. ncbi request reprint Statistical encoding model for a primary motor cortical brain-machine interface
    Shy Shoham
    Faculty of Biomedical Engineering, The Technion, Israel Institute of Technology, Haifa 32000, Israel
    IEEE Trans Biomed Eng 52:1312-22. 2005
    ..The statistical model is seamlessly integrated into a nearly-optimal recursive method for decoding movement from neural responses based on a Sequential Monte Carlo filter...

Research Grants7

  1. A PERIPHERAL NERVE, INTRAFASCICULAR MULTIELECTRODE ARRAY
    RICHARD NORMANN; Fiscal Year: 2003
    ..Our overall goal is to acquire sufficient information about the USA and how it can be chronically applied so that human application would be feasible and ethically acceptable in a future granting period. ..
  2. Multisite, intrafascicular stimulation for stance
    RICHARD NORMANN; Fiscal Year: 2007
    ..abstract_text> ..