[1] Univ Med & Dent New Jersey, Robert Wood Johnson Med Sch, Piscataway, NJ 08854 USA
[2] Mt Sinai Sch Med, Dept Neurosurg, New York, NY USA
[3] Mt Sinai Sch Med, Dept Neurol, New York, NY USA
[4] Lahey Clin Fdn, Dept Intraoperat Neurophysiol, Burlington, MA USA