José Zariffa

Publications

Journal Papers
  • J. Zariffa, S.L. Hitzig and M.R. Popovic, "Neuromodulation of emotion using functional electrical stimulation applied to facial muscles”, Neuromodulation: Technology at the Neural Interface, in press.
  • J. Zariffa, J.D. Steeves and D.K. Pai, "Changes in hand muscle synergies in subjects with spinal cord injury: characterization and functional implications ", Journal of Spinal Cord Medicine, 35(5): 310-318, 2012 (invited paper).
  • J. Zariffa, J.L.K. Kramer, L. Jones, D.P. Lammertse, A. Curt and J.D. Steeves, “Sacral sparing in SCI: beyond the S4/S5 and anorectal examination”, The Spine Journal,12(5): 389-400, 2012.
  • J.L.K. Kramer, P. Taylor, J. Haefeli, J. Blum, J. Zariffa, A. Curt and J.D. Steeves, "Test-retest reliability of contact heat evoked potentials from cervical dermatomes", Journal of Clinical Neurophysiology, 29(1):70-75, 2012.
  • J. Zariffa, N. Kapadia, J.L.K. Kramer, P. Taylor, M. Alizadeh-Meghrazi, V. Zivanovic, U. Albisser, R. Willms, A. Townson, A. Curt, M.R. Popovic and J.D. Steeves, "Relationship between clinical assessments and measurements from an upper-limb robotic rehabilitation device in a population with spinal cord injury", IEEE Transactions on Neural Systems and Rehabilitation Engineering, 20(3): 341-350, 2012.
  • J. Zariffa, J.D. Steeves and D.K. Pai, “Muscle tension estimation in the presence of neuromuscular impairment", Journal of Biomechanical Engineering, 133(12): 121009, 2011.
  • J. Zariffa, A. Curt and J.D. Steeves, “Functional motor preservation below the level of injury in subjects with AIS A spinal cord injuries”, Archives of Physical Medicine and Rehabilitation, 2011, in press (brief communication).
  • J. Zariffa, N. Kapadia, J.L.K. Kramer, P. Taylor, M. Alizadeh-Meghrazi, V. Zivanovic, R. Willms, A. Townson, A. Curt, M.R. Popovic and J.D. Steeves, "Feasibility and efficacy of upper limb robotic rehabilitation training in a sub-acute cervical SCI population", Spinal Cord, 50:220-226, 2012.
  • J. Zariffa, M.K. Nagai, M. Schuettler, T. Stieglitz, Z.J. Daskalakis and M.R. Popovic, "Use of an experimentally derived leadfield in the peripheral nerve pathway discrimination problem", IEEE Transactions on Neural Systems and Rehabilitation Engineering, 19(2):147-156, 2011.
  • J. Zariffa, J.L.K. Kramer, J.W. Fawcett, D.P. Lammertse, A.R. Blight, J. Guest, L. Jones, S. Burns, M. Schubert, M. Bolliger, A. Curt and J.D. Steeves, “Characterization of neurological recovery following traumatic sensorimotor complete thoracic spinal cord injury,” Spinal Cord, 49(3):463-471, 2011.
  • L. Vaisman, J. Zariffa and M.R. Popovic, "Application of singular spectrum-based change-point analysis to EMG onset detection," Journal of Electromyography and Kinesiology, 20:750-760, 2010.
  • J. Zariffa, M.K. Nagai, Z.J. Daskalakis and M.R. Popovic, "Influence of the number and location of recording contacts on the selectivity of a nerve cuff electrode," IEEE Transactions on Neural Systems and Rehabilitation Engineering, 17(5):420-427, 2009.
  • J. Zariffa and M.R. Popovic, "Localization of active pathways in peripheral nerves: a simulation study," IEEE Transactions on Neural Systems and Rehabilitation Engineering, 17(1):53-62, 2009.
  • J. Zariffa and M.R. Popovic, "Solution space reduction in the peripheral nerve source localization problem using forward field similarities," Journal of Neural Engineering, 5(2):191-202, 2008
  • J. Zariffa and B.L. Bardakjian, "Neuronal electrical rhythms described by composite mapped clock oscillators," Annals of Biomedical Engineering, 34(1):128-41, 2006.
  • J. Zariffa, M. Ebden, and B.L. Bardakjian, "A synaptic input portal for a mapped clock oscillator model of neuronal electrical rhythmic activity," Journal of Neural Engineering, 1(3):158-64, 2004.
Review Articles
  • J.D. Steeves, J.L.K. Kramer and J. Zariffa, "Traversing the Translational Trail for Trials", Topics in Spinal Cord Injury Rehabilitation, 18(1):79-84, 2012.
  • J.D. Steeves, J. Zariffa and J.L.K. Kramer, "Are You “Tilting at Windmills” or Undertaking a Valid Clinical Trial?", Yonsei Medical Journal, 52(5):701-716, 2011.
Conference Papers
  • J. Zariffa, M.K. Nagai, M. Schuettler, T. Stieglitz, Z.J. Daskalakis and M.R. Popovic, "A framework for the discrimination of neural pathways using multi-contact nerve cuff electrodes", 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, August 30-September 3, 2011, Boston, MA, USA.
  • J. Zariffa and J.D. Steeves, "Computer vision-based classification of hand grip variations in neurorehabilitation", IEEE 12th International Conference on Rehabilitation Robotics, June 29-July 1, 2011, Zurich, Switzerland.

  • J. Zariffa, N. Kapadia, J.L.K. Kramer, P. Taylor, M. Alizadeh-Meghrazi, V. Zivanovic, R. Willms, A. Townson, A. Curt, M.R. Popovic and J.D. Steeves, "Effect of a robotic rehabilitation device on upper limb function in a sub-acute cervical spinal cord injury population", IEEE 12th International Conference on Rehabilitation Robotics, June 29-July 1, 2011, Zurich, Switzerland.
  • J.F. Tan, J. Zariffa, A. Vette, C. Lynch, K. Masani and M.R. Popovic, "Use of an inverted pendulum apparatus for the study of closed-loop FES control of the ankle joints during quiet standing," 15th Annual Conference of the International Functional Electrical Stimulation Society, September 8-12, 2010, Vienna, Austria.
  • J. Zariffa, M.K. Nagai, Z.J. Daskalakis and M.R. Popovic, "Bioelectric Source Localization in the Rat Sciatic Nerve: Initial Assessment Using an Idealized Nerve Model," World Congress on Medical Physics and Biomedical Engineering, September 7-12, 2009, Munich, Germany
  • J. Zariffa and M.R. Popovic, "Application of EEG source localization algorithms to the monitoring of active pathways in peripheral nerves," 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, August 20-24, 2008, Vancouver, BC, Canada
  • J. Zariffa and M.R. Popovic, "Decomposition of multi-contact nerve cuff signals into velocity-specific components," 31st Annual Canadian Medical and Biological Engineering Conference, June 11-13, 2008, Montreal, QC, Canada
  • N. Tsolas, J. Zariffa and M.R. Popovic, "Rapid Automated Finite Element Modeling of Peripheral Nerves," 3rd Annual Canadian Student Conference on Biomedical Computing, March 13-15, 2008, Toronto, ON, Canada
  • J. Zariffa and M.R. Popovic, "Finite element mesh reduction guidelines for the inverse problem of source localization in peripheral nerves," 30th Annual Canadian Medical and Biological Engineering Conference, June 16-19, 2007, Toronto, ON, Canada
Conference Abstracts
  • J. Zariffa, J.D. Steeves and D.K. Pai, “Functional relevance of hand muscle synergy disruptions after spinal cord injury”, 5th National Spinal Cord Injury Conference, October 18-20, 2012, Toronto, ON, Canada [1st Place Poster Award Winner – Research Category].
  • J. Zariffa, N. Kapadia, J.L.K. Kramer, P. Taylor, M. Alizadeh-Meghrazi, V. Zivanovic, R. Willms, A. Townson, A. Curt, M.R. Popovic and J.D. Steeves, "Upper limb robotic rehabilitation training in a subacute cervical SCI population: a pilot study", American Spinal Injury Association Annual Meeting, April 19-21, 2012, Denver, CO, USA  [Nominated in Best Poster Competition].
  • J. Zariffa, N. Kapadia, J.L.K. Kramer, P. Taylor, M. Alizadeh-Meghrazi, V. Zivanovic, U. Albisser, R. Willms, A. Townson, A. Curt, M.R. Popovic, and J.D. Steeves, "Relationship between robotic rehabilitation device measurements and upper limb clinical assessments in cervical spinal cord injury", American Spinal Injury Association Annual Meeting, April 19-21, 2012, Denver, CO, USA.
  • J.D. Steeves and J. Zariffa, "Virtual-reality, robot-assisted rehabilitation training for people living with limited hand function," 26e Congres de Medecine Physique et de Readaptation, October 13-15, 2011, Nantes, France.
  • J.D. Steeves, J. Kramer and J. Zariffa, "Developing clinically meaningful outcome measures for acute and subacute clinical SCI trials," 26e Congres de Medecine Physique et de Readaptation, October 13-15, 2011, Nantes, France.
  • L. Vaisman, J. Zariffa, K. Masani and M.R. Popovic, "Application of singular spectrum-based change-point analysis to EMG onset detection", 18th Congress of the International Society of Electrophysiology & Kinesiology, June 16-19, 2010, Aalborg, Denmark.
  • J. Zariffa, J.L.K. Kramer, P. Taylor, N. Kapadia, R. Willms, A. Townson, M.R. Popovic and J.D. Steeves, "Use of a virtual-reality upper-limb robotic rehabilitation device after cervical spinal cord injury," American Spinal Injury Association Annual Meeting, May 25-28, 2010, Nashville, TN, USA
  • J. Zariffa and M.R. Popovic, "Dimensionality reduction of a bioelectric source localization problem using forward field similarities", Neural Interfaces Conference, June 16-18, 2008, Cleveland, OH, USA
  • J. Zariffa and B.L. Bardakjian, "Topology and complexity in coupled mapped clock oscillators representing CA3 neural network", 2004 Annual Fall Meeting of the Biomedical Engineering Society, October 13-16, 2004, Philadelphia, PA, USA [Presented by Dr. Bardakjian]
Invited Talks
  • “Strategies for adaptive neurorehabilitation interventions”, University of Toronto, January 16, 2013, Toronto, ON, Canada.
  • “Upper limb rehabilitation robotics: Experiences in a sub-acute spinal cord injury population”, Holland Bloorview Research Institute, July 24, 2012, Toronto, ON, Canada.
  • "Restoring function after neurological injury: From neuroprosthetics to robotics", York University, May 16, 2012, Toronto, ON, Canada.
  • "Technology to restore function after neurological injury: a bench to bedside perspective", Florida International University, March 26, 2012, Miami, FL, USA.
  • “Upper Limb Rehabilitation Robotics in Sub-Acute Spinal Cord Injury”, Toronto Rehab, October 27, 2011, Toronto, ON, Canada.
  • “Use of the Armeo®Spring in Sub-Acute Cervical SCI: First Insights”, International Neurorehabilitation Symposium, June 27-29, 2011, Zurich, Switzerland.

  • “Engineering the neural interface: Restoration of function after neurological injury”, University of Toronto, April 29, 2011, Toronto, ON, Canada.
  • “Engineering systems to restore function after neurological injury”, Simon Fraser University, June 2, 2010, Burnaby, BC, Canada.
  • "Virtual reality assisted robots for activity dependent upper extremity rehabilitation," American Spinal Injury Association Annual Meeting, May 25-28, 2010, Nashville, TN, USA. 
  • "Influence of the number and location of recording contacts on nerve cuff selectivity," World Congress on Medical Physics and Biomedical Engineering, September 7-12, 2009, Munich, Germany.
  • "Exploring a New Approach to Peripheral Nerve Interfaces", ICORD, Vancouver, BC, Canada, April 3, 2009.

Research Interests

  • Rehabilitation engineering
  • Neural prostheses/neural interfaces
  • Bioelectric source localization
  • Upper limb rehabilitation

Work History

Work History
Mar 2013 - Present

Assistant Professor

University of Toronto

Institute of Biomaterials and Biomedical Engineering

Mar 2013 - Present

Scientist

Toronto Rehabilitation Institute - UHN
Sep 2011 - Mar 2013

Post-Doctoral Fellow

Toronto Rehabilitation Institute - UHN
Sep 2009 - Aug 2011

Post-Doctoral Fellow

University of British Columbia

Affiliated with the International Collaboration on Repair Discoveries (ICORD) and the Department of Computer Science (Sensorimotor Systems Laboratory).

Education

Education
Sep 2005 - Jun 2009

Ph.D.

University of Toronto
Sep 2002 - Jun 2004

M.A.Sc.

University of Toronto
Sep 1998 - Jun 2002

B.Eng.

McGill University