VisualCV

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

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

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", 33^rd 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," 30^th 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," 31^st 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," 3^rd 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," 30^th 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.