title: EEG windowed statistical wavelet scoring for evaluation and discrimination of muscular artifacts.
abstract: EEG recordings are usually corrupted by spurious extra-cerebral artifacts, which should be rejected or cleaned up by the practitioner. Since manual screening of human EEGs is inherently error prone and might induce experimental bias, automatic artifact detection is an issue of importance. Automatic artifact detection is the best guarantee for objective and clean results. We present a new approach, based on the time-frequency shape of muscular artifacts, to achieve reliable and automatic scoring. The impact of muscular activity on the signal can be evaluated using this methodology by placing emphasis on the analysis of EEG activity. The method is used to discriminate evoked potentials from several types of recorded muscular artifacts-with a sensitivity of 98.8% and a specificity of 92.2%. Automatic cleaning of EEG data is then successfully realized using this method, combined with independent component analysis. The outcome of the automatic cleaning is then compared with the Slepian multitaper spectrum based technique introduced by Delorme et al (2007 Neuroimage 34 1443-9).
authors.affiliation: Lab ABSP, RIKEN Brain Science Institute, Wako-Shi, Japan. fvialatte@brain.riken.jp
authors.forename: François-Benoit
authors.initials: FB
authors.lastname: Vialatte
authors.forename: Jordi
authors.initials: J
authors.lastname: Solé-Casals
authors.forename: Andrzej
authors.initials: A
authors.lastname: Cichocki
mesh_terms: D000465:Algorithms; D016477:Artifacts; D001331:Automation; D003627:Data Interpretation, Statistical; D016208:Databases, Factual; D004569:Electroencephalography / Q000706:statistics & numerical data*; D005583:Fourier Analysis; D006801:Humans; D018482:Muscle, Skeletal / Q000502:physiology*