[1] Univ Wisconsin Sch Med & Publ Hlth, Dept Neurol, Madison, WI 53792 USA
[2] Univ Calif San Diego, Dept Psychiat, Multimodal Imaging Lab, San Diego, CA 92103 USA
[3] Univ Liverpool, Inst Psychol Hlth & Soc, Liverpool L69 3BX, Merseyside, England
[4] Columbia Univ, Coll Phys & Surg, Dept Neurol, New York, NY USA
[5] Univ Bonn, Dept Epileptol, D-5300 Bonn, Germany
[6] Univ Cincinnati, Dept Psychol, Cincinnati, OH 45221 USA