[1] Tech Univ, Klinikum Rechts Isar, Dept Neurosurg, Ismaninger Str 22, D-81675 Munich, Germany
[2] Univ Helsinki, HUS Med Imaging Ctr, BioMag Lab, POB 340, Helsinki 00029, Finland
[3] Helsinki Univ Hosp, POB 340, Helsinki 00029, Finland
[4] Univ Helsinki, HUS Med Imaging Ctr, Dept Clin Neurophysiol, POB 340, Helsinki 00029, Finland
[5] Nexstim Plc, Elimaenkatu 9 B, Helsinki 00510, Finland
[6] Aalto Univ, Dept Biomed Engn & Computat Sci, Espoo, Finland
[7] Univ Hosp Cologne, Ctr Neurosurg, Kerpener Str 62, D-50937 Cologne, Germany
[8] Univ Bern, Univ Hosp Bern, Inselspital, Dept Neurosurg, CH-3010 Bern, Switzerland
[9] Helsinki Univ Hosp, Dept Neurosurg, POB 266,Topeliuksenkatu 5, Helsinki 00260, Finland
[10] Univ Helsinki, Clin Neurosci, Neurosurg, POB 266,Topeliuksenkatu 5, Helsinki 00260, Finland
[11] Karolinska Univ Hosp, Dept Clin Neurophysiol R2 01, S-17176 Stockholm, Sweden
[12] Univ Helsinki, Cent Hosp, Dept Pediat Neurol, Epilepsy Unit, Lastenlinnantie 2 PL 280, Helsinki 00029, Finland
[13] Univ Calif San Francisco, Dept Neurol Surg, 505 Parnassus Ave, San Francisco, CA 94143 USA
[14] Charite Univ Med Berlin, Dept Neurosurg, Campus Benjamin Franklin,Augustenburger Pl 1, D-13353 Berlin, Germany