Unsupervised machine learning can delineate central sulcus by using the spatiotemporal characteristic of somatosensory evoked potentials.

Journal of Neural Engineering
Priscella AsmanNuri Firat Ince


Objective.Somatosensory evoked potentials (SSEPs) recorded with electrocorticography (ECoG) for central sulcus (CS) identification is a widely accepted procedure in routine intraoperative neurophysiological monitoring. Clinical practices test the short-latency SSEPs for the phase reversal over strip electrodes. However, assessments based on waveform morphology are susceptible to variations in interpretations due to the hand area's localized nature and usually require multiple electrode placements or electrode relocation. We investigated the feasibility of unsupervised delineation of the CS by using the spatiotemporal patterns of the SSEP captured with the ECoG grid.Approach. Intraoperatively, SSEPs were recorded from eight patients using ECoG grids placed over the sensorimotor cortex. Neurosurgeons blinded to the electrophysiology identified the sensory and motor gyri using neuronavigation based on sulcal anatomy. We quantified the most discriminatory time points in SSEPs temporal profile between the primary motor (M1) and somatosensory (S1) cortex using the Fisher discrimination criterion. We visualized the amplitude gradient of the SSEP over a 2D heat map to provide visual feedback for the delineation of the CS based on elect...Continue Reading


Sep 1, 1979·Electroencephalography and Clinical Neurophysiology·R P LesserH Lueders
Feb 1, 1992·Electroencephalography and Clinical Neurophysiology·J P Brasil-NetoL G Cohen
Oct 1, 1996·Journal of Neurosurgery·J ZentnerJ Schramm
Aug 5, 1999·Journal of Neuro-oncology·P G MatzM S Berger
Nov 9, 2000·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Y MaegakiH O Lüders
Nov 4, 2006·Brain : a Journal of Neurology·Margarita Pondal-SordoSamuel Wiebe
Mar 5, 2008·Computational Intelligence and Neuroscience·Anant HegdeChris J Sackellares
May 20, 2008·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·G CruccuL Garcia-Larrea
May 30, 2008·Brain : a Journal of Neurology·Miho FukudaEishi Asano
Jul 21, 2009·European Journal of Anaesthesiology·Vincent BonhommePol Hans
Apr 25, 2012·Journal of Clinical Oncology : Official Journal of the American Society of Clinical Oncology·Philip C De Witt HamerMitchel S Berger
Apr 1, 2014·Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia·Mirela V SimonEmad N Eskandar
Aug 5, 2015·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Michel Desmurget, Angela Sirigu
Oct 23, 2015·Neurology·Christian EndischChristoph Leithner
May 22, 2020·Journal of Neurological Surgery. Part A, Central European Neurosurgery·José Pedro LavradorFrancesco Vergani
Jun 27, 2020·Human Brain Mapping·Carolin Weiss LucasChristian Grefkes

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