Quantification of the adult EEG background pattern

Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology
Shaun S Lodder, Michel J A M van Putten

Abstract

Visual interpretation of EEG is time-consuming and not always consistent between reviewers. Our objective is to improve this by introducing guidelines and algorithms to quantify various properties, focussing on the background pattern in adult EEGs. Five common properties were evaluated: (i) alpha rhythm frequency; (ii) reactivity; (iii) anterio-posterior gradients; (iv) asymmetries; and (v) diffuse slow-wave activity. A formal description was found for each together with a guideline and proposed quantitative algorithm. All five features were automatically extracted from routine EEG recordings. Modified time-frequency plots were calculated to summarize spectral and spatial characteristics. Visual analysis scores were obtained from diagnostic reports. Automated feature extraction was applied to 384 routine EEGs. Inter-rater agreement was calculated between visual and quantitative analysis using Fleiss' kappa: κ={(i)0.60;(ii)0.35;(iii)0.19;(iv)0.12;(v)0.76}. The method is further illustrated with three representative examples of automated reports. Automated feature extraction of several background EEG properties seems feasible. Inter-rater agreement differed between various features, ranging from slight to substantial. This may be...Continue Reading

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Citations

Sep 26, 2013·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Jessica Askamp, Michel J A M van Putten
Jan 30, 2014·PloS One·Shaun S LodderMichel J A M van Putten
Feb 25, 2014·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Hiroshi ShibasakiAkio Ikeda
Aug 8, 2015·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Simon FinniganStephen Read
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Sep 29, 2020·Frontiers in Psychology·Joseph Glicksohn, Tal Dotan Ben-Soussan

Related Concepts

Alpha Rhythm
Electroencephalogram
Signal Processing, Digital
Intraobserver Variation
Brain Waves
Electroencephalography
Spatial Distribution
Extraction
Dorsal
Patterns

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