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Thompson AK, Chen XY, Wolpaw J. Acquisition of a simple motor skill: task-dependent adaptation plus long-term change in the human soleus H-reflex. The Journal of neuroscience : the official journal of the Society for Neuroscience [Internet]. 2009;29:5784?5792. http://www.ncbi.nlm.nih.gov/pubmed/19420246

Thompson AK, Stein RB, Chen XY, Wolpaw J. Modulation in spinal circuits and corticospinal connections following nerve stimulation and operant conditioning. Conference proceedings : .. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference [Internet]. 2006;1:2138?2141. http://www.ncbi.nlm.nih.gov/pubmed/17946939