College of Science Social links:

Young-Hui Chang, Ph.D.

Associate Professor

School of Applied Physiology
Office: 1309 B
Phone: (404) 894-9993 (office)
email: yh.chang@ap.gatech.edu
Lab: Comparative Neuromechanics Laboratory

Young-Hui Chang

Education

  • Ph.D., Integrative Biology, University of California, Berkeley, 2000
  • M.S., Animal Physiology, Cornell University College of Vet. Medicine, 1996
  • B.S., Mechanical Engineering, Cornell University, 1993

Research Interests

Dr. Chang is the director of the Comparative Neuromechanics Laboratory in the School of Applied Physiology. His research program focuses on trying to understand how animals move through and interact with their environment. He integrates approaches and techniques from both biomechanics and neurophysiology to elucidate both passive mechanical and active neural mechanisms that control limbed locomotion in humans and other terrestrial vertebrates. This multidisciplinary approach allows him to test hypotheses about the basic design and function of the locomotor apparatus throughout a variety of conditions. His current goal is to understand the extent to which muscular reflexes can influence limb coordination during locomotion and how global limb control strategies may be affected by sensorimotor perturbations. Lab Website

Select Publications

  • Yen, J.T. and Y.-H. Chang. Rate-dependent control strategies stabilize limb forces during human hopping. Journal of the Royal Society Interface, 7: 801-810, 2010.
  • Bauman, J. and Y.-H. Chang. High-speed x-ray video demonstrates significant skin movement errors in standard optical kinematics during rat locomotion. Journal of Neuroscience Methods, 186: 18-24, 2010.
  • Yeom, H.J. and Y.-H. Chang. Autogenic EMG-controlled functional electrical stimulation for ankle dorsiflexion control. J. Neurosci. Meth., 193: 118-125, 2010.
  • Chang, Y.-H.,  A.G. Auyang, J.P. Scholz and T.R. Nichols. Whole limb kinematics are preferentially conserved over individual joint kinematics after peripheral nerve injury. Journal of Experimental Biology, 212: 3511-21, 2009.
  • Yen, J.T., A.G. Auyang, and Y.-H. Chang. Joint-level kinetic redundancy is exploited to control limb level forces during human hopping. Experimental Brain Research, 196: 439-451, 2009.
  • Hayes, H.B., Y.-H. Chang., and S. Hochman. An in vitro spinal cord-hindlimb preparation for studying behaviorally relevant rat locomotor function. Journal of Neurophysiology, 101: 1114-1122, 2009.
  • Chang, Y.-H. Limb compensation strategies for controlling locomotor stability. In: “Advances in Neuromuscular Physiology of Motor Skills and Muscle Fatigue”. ed., M. Shinohara. Research Signpost, Kerala, p. 191-213, 2009.
  • Auyang, A., J. Yen, and Y.-H. Chang. Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping. Experimental Brain Research, 192: 253-264, 2009
  • Chang, Y.-H., Roiz, R.A., and A. Auyang. Intralimb compensation strategy depends on the nature of joint perturbation in human hopping. Journal of Biomechanics, 41(9): 1832-1839, 2008.
  • Yeom, H. J., Park, Y.C. and Y.-H. Chang. Eigen filter to detect volitional EMG signals in autogenic EMG-controlled FES. IEE Electronics Letters, 43(25): 1410-1411, 2007.
  • Chang, Y.-H. and R. Kram. Limitations to running speed on flat curves. Journal of Experimental Biology, 210:971-982, 2007.