People

Faculty

Philip Troyk, PhD

Philip Troyk
Philip Troyk

Laboratory Director

Associate Dean – Armour College of Engineering
Professor – Department of Biomedical Engineering

IIT Faculty Profile

  • PhD Bioengineering, University of Illinois at Chicago
  • MS Bioengineering, University of Illinois at Chicago
  • BS Electrical Engineering, University of Illinois at Urbana-Champaign

Sungjae Suh, PhD

Sungjae Suh
Sungjae Suh

Research Associate

Dr. Suh’s research enables the development of implantable devices for the Intracortical Visual Prosthesis (ICVP) and packaging for other neural prosthesis. His current work focuses upon reliability assessment and failure analysis of implantable systems through environmental stress testing, to inform implanted life time prediction.

  • PhD Metallurgical & Materials Engineering, Illinois Institute of Technology

Current Graduate Students

Gayatri Kaskhedikar

Gayatri Kaskhedikar
Gayatri Kaskhedikar

Gayatri’s current research is focused on the development of phosphene mapping techniques for cortical implant recipients under the guidance of Dr. Gislin Dagnelie at Johns Hopkins University. As a Masters’ student, she was a research assistant in the Neuro-rehab lab (Advisor, Dr. Walter Besio) and developed an EMG-electrode multiplexer for a FES system to be used in the rehabilitation of hemiplegic patients. She has also worked as a research technologist at the Martinos Imaging center in MGH, Boston.

  • MS Biomedical Engineering, Louisiana Tech University (2007)
  • BE Electronics and Instrumentation, University of Madras (2004)

Publications: [1] [2]

Samuel Bredeson

Sam Bredeson
Sam Bredeson

As an undergraduate at Michigan Tech, Sam worked as a research assistant in the Biosensors Laboratory on projects involving sensors based on magnetoelastic materials. His current research is on the development of implantable electrode systems for chronic use, particularly for peripheral nerve applications.

  • BS Biomedical Engineering, Michigan Technological Unversity (2011)

Publications: [3] [4] [5] [6] [7] [8]

Sina Farahmand

Sina Farahmand
Sina Farahmand

In 2009, Sina joined the Integrated Circuit and System (ICAS) laboratory at K. N. Toosi University of Technology as a graduate research assistant, where he worked on designing wearable/implantable neural recording/stimulation microsystems. He then spent two years as a senior circuit designer at the DAF Company in Tehran, Iran before joining the Neural Prosthetic Research Laboratory to pursue his Ph.D.

Sina’s primary work is on designing wireless, implantable, neuro-electroceutical system (WINES) in order to monitor (read), modulate (write), and process peripheral nerve activity. His research interests include designing analog and mixed-signal integrated circuits for biomedical applications, neural prosthetic devices, brain-computer-interfaces, and neural engineering.

  • MS Biomedical Engineering, K. N. Toosi University of Technology (2012)
  • BS Electrical Engineering, K. N. Toosi University of Technology (2009)

Publications[9] [10] [11]


Selected Alumni

Alexander Rush

Alex Rush
Alex Rush

Thesis: Getting Rid of the Wires: A Transcutaneous Power and Wideband Telemetry System for Multi-Channel Neural Recording Implants

Alexander’s ground-breaking research work involved the design of mixed-signal circuits and inductive links for neural prosthetic applications. In collaboration with engineers at Sigenics, Inc., he demonstrated his novel technology through the design and fabrication of an implantable wideband 16-channel neural sensing system for cortical neural recording.

  • Electronics Hardware Engineer, Plexon Inc.
  • PhD Biomedical Engineering, Illinois Institute of Technology (2012)
  • BS Electrical & Computer Engineering, University of Illinois at Urbana-Champaign (2006)

Zhe Hu

Zhe Hu
Zhe Hu

Thesis: Characterization of AIROF Stimulating Microelectrodes

Hu’s novel research work, performed in collaboration with Dr. Stuart Cogan (formerly of EIC Laboratories, now at the University of Texas at Dallas) furthered the understanding of how to use Activated Iridium Oxide Film (AIROF) electrodes for neural stimulation. His work revealed the disparity between in-vitro and in-vivo charge injection capabilities of AIROF electrodes for cortical applications.

  • Biomedical Engineer, Sigenics, Inc.
  • PhD Biomedical Engineering, Illinois Institute of Technology (2008)

Nishant Srivastava

ThesisFirst Generation Intracortical Visual Prosthesis Image Capture and Processing System

Nishant’s developmental research work produced a first generation image processing system for the Intracortical Visual Prothesis (ICVP) to process images captured by a camera and communicate with the implantable simulator. While performing experiments at Johns Hopkins University, under the guidance of Dr. Gislin Dagnelie, he reported some of the first results from psychophysical testing of sighted subjects to predict the performance of an ICVP system in an individual with blindness.

  • Principal R&D Engineer, Medtronic
  • PhD Biomedical Engineering, Illinois Institute of Technology (2007)

[1]
G. Kaskhedikar, L. Yang, T. Boucher, P. Troyk, and G. Dagnelie, “Development of Mapping Methods with Simulated Phosphenes for Implementation in Intracortical Visual Prosthesis Recipients,” Investigative Ophthalmology & Visual Science, vol. 56, no. 7, p. 4315, Jun. 2015. [Source]
[2]
G. P. Kaskhedikar, Z. Hu, G. Dagnelie, and P. R. Troyk, “Proposed Intracortical vision prosthesis system for phosphene mapping and psychophysical studies,” 2013 6th International IEEE/EMBS Conference on Neural Engineering (NER). Institute of Electrical and Electronics Engineers (IEEE), Nov-2013. [Source]
[3]
O. Tawakol, S. D. Bredeson, and P. R. Troyk, “Preparation of a neural electrode implantation device for in-vivo surgical use,” 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). Institute of Electrical and Electronics Engineers (IEEE), Aug-2016. [Source]
[4]
S. Bredeson, A. Kanneganti, F. Deku, S. Cogan, M. Romero-Ortega, and P. Troyk, “Chronic in-vivo testing of a 16-channel implantable wireless neural stimulator.,” Conf Proc IEEE Eng Med Biol Soc, vol. 2015, pp. 1017–20, Aug. 2015. [PubMed]
[5]
P. Troyk et al., “In-vivo tests of a 16-channel implantable wireless neural stimulator,” 2015 7th International IEEE/EMBS Conference on Neural Engineering (NER). Institute of Electrical and Electronics Engineers (IEEE), Apr-2015. [Source]
[6]
S. Bredeson and P. Troyk, “Device for the implantation of neural electrode arrays.,” Conf Proc IEEE Eng Med Biol Soc, vol. 2014, pp. 434–7, Jan. 2014. [PubMed]
[7]
S. D. Bredeson, P. R. Troyk, S. Suh, and M. Bak, “Investigation of long-term electrical degradation in neural recording and stimulation microelectrode arrays,” 2013 6th International IEEE/EMBS Conference on Neural Engineering (NER). Institute of Electrical and Electronics Engineers (IEEE), Nov-2013. [Source]
[8]
S. Bredeson, P. Troyk, S. Suh, and M. Bak, “Identification and quantification of electrical leakage pathways in floating microelectrode arrays.,” Conf Proc IEEE Eng Med Biol Soc, vol. 2013, pp. 1542–5, Jan. 2013. [PubMed]
[9]
S. Farahmand, M. Maghami, and A. Sodagar, “Programmable high-output-impedance, large-voltage compliance, microstimulator for low-voltage biomedical applications.,” Conf Proc IEEE Eng Med Biol Soc, vol. 2012, pp. 863–6, Jan. 2012. [PubMed]
[10]
S. Farahmand, H. Vahedian, E. Abedinkhan, and A. Sodagar, “Wearable, battery-powered, wireless, programmable 8-channel neural stimulator.,” Conf Proc IEEE Eng Med Biol Soc, vol. 2012, pp. 6120–3, Jan. 2012. [PubMed]
[11]
S. Farahmand and H. Shamsi, “Positive feedback technique for DC-gain enhancement of folded cascode Op-Amps,” 10th IEEE International NEWCAS Conference. Institute of Electrical and Electronics Engineers (IEEE), Jun-2012. [Source]