Jonathon Schofield, Ph.D. (Research Assistant)

Jonathon is a Research Assistant in the BLINC lab. In 2017, he completed his PhD. in Mechanical Engineering at the University of Alberta researching Upper limb prostheses and sensory feedback strategies. Prior, he completed his Masters degree in Structural Engineering in 2012 with hiss research investigating musculoskeletal biomechanics and orthotic design. Jonathon was a 2009 graduate of the Mechanical Engineering program at Lakehead University.

Contact me: jsschofi@ualberta.ca

Research Interests:

Kinesthetic Sensory Feedback: Dexterous hand movement is dependent on motor output and sensory feedback. This is significantly altered in those with upper limb amputation as sensations of touch and movement (sensory feedback) are inherently lost with the limb. While operating upper limb prostheses, the absence of sensory feedback impedes use of the device by forcing reliance on vision and increasing the required conscience attention. The goal of my work is to establish a sensory interface for upper limb prostheses capable of providing natural, physiologically relevant movement feedback. My work involves the exploration of non-invasive methods to elicit sensations of movement in a patient’s missing limb, and to integrate these strategies with functional prostheses. My interests included analysis of potential feedback methods, feedback system development and design, as well as patient testing.

Publications:

  • Schofield JS, Schoepp KR, Williams HE, Carey JP, Marasco PD, Hebert JS. (2017). Characterization of interfacial socket pressure in transhumeral prostheses: a case series. PLOS one. https://doi.org/10.1371
  • Schofield JS, Evans KR, Hebert JS, Marasco PD, Carey JP, “The Effect of Biomechanical Variables on Force Sensitive Resistor Error: Implications for Calibration and Improved Accuracy.”, Journal of Biomechanics Volume 49, Issue 5, 21  pp. 786–792, DOI: 10.1016/j.jbiomech.2016.01.022
  • Melenka GW, Cheung BKO, Schofield JS, Dawson MR, Carey JP. (2016) Evaluation and prediction of the tensile properties of continuous fiber-reinforced 3D printed structures. Composite Structures. 153(1): 866-875
  • Schofield JS, Dawson MR, Carey JP, Hebert JS, 2014. “Characterizing the effects of amplitude, frequency and limb position on vibration induced movement illusions: Implications in sensory-motor rehabilitation.”, Technology and Health Care 23 (2015) 129-141. DOI: 10.3233/THC-140879. (Schofield 2015 TechHealthCare.pdf)
  • Schofield JS, Evans KR, Carey JP, Hebert JS. (2014). Applications of sensory feedback in motorized upper extremity prosthesis: a review. Expert Reviews of Medical Devices. 11(5): 499-511.
  • Melenka GW, Schofield JS, Dawson, MR, Carey JP, 2014. “Evaluation of Dimensional Accuracy and Material Properties of the MakerBot 3D Desktop Printer.”, Rapid Prototyping Journal, 21(5), pp.618 – 627, DOI: http://dx.doi.org/10.1108/RPJ-09-2013-0093
  •  Schofield JS , Parent EC , Lewicke J , Carey JP , El-Rich M , Adeeb S, 2013. “Characterizing asymmetry across the whole sit to stand movement in healthy participants.”, Journal of biomechanics, 46(15) PubMed ID:  24016681
  •  Schofield J , Parent E , Lewicke J , Carey JP , El-Rich M , Adeeb S, 2013 “Leg Dominance May Not be a Predictor of Asymmetry in Peak Joint Moments and Ground Reaction Forces During Sit to Stand Movements.”, Journal of applied biomechanics PubMed ID: 23878268

Photo credit Grace Hamm