B.S., McGill University; Ph.D., Johns Hopkins School of Medicine; Postdoctoral Fellowship, Emory University and Georgia Tech; Postdoctoral Fellowship, University of Copenhagen.
Neural control of locomotion and balance
Walking poses a significant challenge for individuals with motor, sensory and cognitive deficits associated with neurological disorders. In order to treat locomotor impairments, we must first understand the biomechanics and neural mechanisms underlying walking control. Dr. Choi’s research uses different experimental tools to expose subjects to novel and challenging walking environment, and examine how the nervous system plan and execute movements. Measurements of joint kinematics, forces and neuromuscular activity during walking provide a rich set of data to study the interplay between biomechanical demands and neural control mechanisms. Her current studies addresses how somatosensory and visual information interacts with walking control at multiple levels of the central nervous system.
Choi JT, Bouyer LJ, Nielsen JB. Disruption of locomotor adaptation with repetitive transcranial magnetic stimulation of the motor cortex. Cerebral Cortex, in press.
Choi JT, Jensen JL, Leukel C, Nielsen JB. Cutaneous mechanisms of isometric ankle force control. Experimental Brain Research, 228(3): 377-384, 2013.
Bingham JT, Choi JT, Ting LH. Stability in a frontal plane model of balance requires coupled changes to postural configuration and neural feedback control. Journal of Neurophysiology, 106(1):437‐48, 2011.
Choi JT, Vining EP, Mori S, Bastian AJ. Sensorimotor function and sensorimotor tracts after hemispherectomy. Neuropyschologia, 48(5):1192-9, 2010.
Choi JT, Reisman DS, Vining, EP, Bastian AJ. Walking flexibility after hemispherectomy: split-belt treadmill adaptation and feedback control. Brain, 32(3):722-733, 2009.
Choi JT, Bastian AJ. Adaptation reveals independent control networks for human walking. Nature Neuroscience, 10(8):1055-62, 2007.