[1] UPMC, Epilepsy Monitoring Unit EMU, Pittsburgh, PA 15213 USA
[2] Univ Pittsburgh, Comprehens Epilepsy Ctr, UPCEC, Pittsburgh, PA 15213 USA
[3] Univ Pittsburgh, MEG Epilepsy Program, Pittsburgh, PA 15213 USA
[4] Univ Pittsburgh, MEG Epilepsy Program, Pittsburgh, PA 15213 USA
[5] Amer Clin MEG Soc ACMEGS, Milwaukee, WI 53202 USA
[6] Univ Pittsburgh, Med Sch, Dept Biomed Engn, Carnegie Mellon Univ CMU, Suite 811,Kaufmann Med Bldg,3471 Fifth Ave, Pittsburgh, PA 15213 USA