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Find Faculty / Xiaogang Hu

Contact Information:

Xiaogang Hu

Mary Ellen Jones 10206B
Chapel Hill, NC 27599
UNC Chapel Hill
(919) 966-0510

4402C Engineering Building III
Raleigh, NC, 27695
NC State University,

Research Areas:
  • Biomedical Imaging
  • Rehabilitation Engineering
  • PhD, Pennsylvania State University


Our Research focuses on the control and neuromechanical properties of the upper extremity after a central or a peripheral injury, such as a stroke or an amputation. Specifically, we focus on the following three research topics regarding the upper extremity neuromuscular system: the neural aspect, the mechanical aspect, and the applied aspect with a focus on rehabilitation. Neural aspect (Muscle activation patterns) We use high-density grid electrodes to estimate the muscle activation patterns (including gross muscle activation and individual motor unit activation), across muscles groups and across compartments of a muscle. We develop different electrical stimulation techniques to understand muscle activation through reflex or direct motor nerve activation. We also develop multi-modal sensing and feedback mechanisms that can influence the control of muscle activation or the control of robotic devices. Mechanical aspect (mechanics of joint and muscle) We use mechanical perturbations to probe the overall stiffness properties of the joint and the muscle-tendon unit. In addition, we use different tissue imaging techniques (e.g., Ultrasound and Magnetic Resonance elastography) to quantify detailed tissue structural properties of the muscle and the tendon. Rehabilitation Based on the grid electrode techniques, we use robotic assistance combined with electrical stimulation to improve upper extremity function, including reaching, grasping, and object manipulations, in stroke survivors. We also develop different closed-loop control schemes of prosthetic arms, in order to realize intuitive and robust control under various task and environmental constraints.

Research Interests

Neural Disorders
Neural Rehabilitation


North Carolina Translational & Clinical Sciences Institute (NCTraCS). Development of a wearable hand activity-monitoring glove for stroke survivors 2018-2019
NSF National Robotics Initiative. Towards Restoring Natural Sensation of Hand Amputees via Wearable Surface Grid Electrodes. UNC Chapel Hill 2016-2019

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