Silvia Mazzali Verst, MD, PhDMedical degree in Physical Medicine and Rehabilitation; a Clinical Neurophysiologist since 1994;PhD in 2011 in the field of intraoperative monitoring (IOM) from the University of São Paulo Medical School;Invited speaker at Neuro-oncology Post-Graduation Course at the Instituto de Ensino e Pesquisa do Hospital Sirio Libanês since 2013;IOM Fellowship Coordinator at Brain Spine Neurofisiologia since 2016;Coordinator of the IOM Course at the Anesthesiology Post-Graduation Course at the University of São Paulo Medical School since 2019.Maria Rufina Barros, MDMedical degree in Neurology; a Clinical Neurophysiologist since 1998;Director of the EMG Laboratory at the Instituto Neurológico do Espírito Santo since 1999;Head of the Intraoperative Monitoring Department at the Vitoria Apart Hospital since 2010.Marcos Maldaun, MD, PhD Neurosurgery Post Graduation Coordinator of Sirio Libanês Hospital in São Paulo; President Founder of Society for Neuro-Oncology Latin America (SNOLA).