Board Certified in Neurology, Professor at the University of Illinois Medical Center at Chicago, he is a Neurologist, interested in Psychiatry. For 28 years, has been Director of the Epilepsy Center, and of Clinical Neurophysiology at the University of Illinois Medical Center. Nationally and internationally recognized as a preeminent expert in EEG, he is the author of over 500 papers and chapters, 8 books, and Journal of Clinical EEG. These include major contributions to the epileptiform patterns of seizures , developmental changes in EEG, traumatic brain injury and behavioral disorders. Had and has numerous positions in professional Organizations including , Editor of the Journal of Electroencephalography, Board of Directors and Editorial Board of Clinical EEG. Recipient of numerous awards, including the 2000 ECNS (Electroencephalography and Clinical Neuroscience Society) career award.