[1] Med Univ South Carolina, Brain Stimulat Lab, Charleston, SC 29425 USA
[2] CUNY City Coll, Dept Biomed Engn, York, NY USA
[3] US Army, Res Lab, Aberdeen Proving Ground, MD USA
[4] Coll Charleston, Charleston, SC 29401 USA
[5] Med Univ South Carolina, Ctr Biomed Imaging, Charleston, SC 29425 USA
[6] Med Univ South Carolina, Dept Pediat, 171 Ashley Ave, Charleston, SC 29425 USA
[7] Med Univ South Carolina, Dept Neurol, Charleston, SC 29425 USA
[8] Ralph H Johnson VA Med Ctr, Charleston, SC USA