title: Recent progress in multi-electrode spike sorting methods.
abstract: In recent years, arrays of extracellular electrodes have been developed and manufactured to record simultaneously from hundreds of electrodes packed with a high density. These recordings should allow neuroscientists to reconstruct the individual activity of the neurons spiking in the vicinity of these electrodes, with the help of signal processing algorithms. Algorithms need to solve a source separation problem, also known as spike sorting. However, these new devices challenge the classical way to do spike sorting. Here we review different methods that have been developed to sort spikes from these large-scale recordings. We describe the common properties of these algorithms, as well as their main differences. Finally, we outline the issues that remain to be solved by future spike sorting algorithms.
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France; Laboratoire de Physique Statistique, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, 24 rue Lhomond, 75005 Paris, France. Electronic address: baptiste.lefebvre@ens.fr.
authors.forename: Baptiste
authors.initials: B
authors.lastname: Lefebvre
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Yger
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Marre
mesh_terms: D000200:Action Potentials / Q000502:physiology; D000465:Algorithms; D004566:Electrodes / Q000639:trends*; D004594:Electrophysiology / Q000379:methods* / Q000639:trends*; D008959:Models, Neurological; D009474:Neurons / Q000502:physiology; D012815:Signal Processing, Computer-Assisted
keywords: Electrophysiology; Microelectrode array; Multi-electrode array; Signal processing; Spike sorting; Template matching