Artifact Correction of the Ongoing EEG Using Spatial Filters Based on Artifact and Brain Signal Topographies
Top Cited Papers
- 1 March 2002
- journal article
- review article
- Published by Wolters Kluwer Health in Journal Of Clinical Neurophysiology
- Vol. 19 (2) , 113-124
- https://doi.org/10.1097/00004691-200203000-00002
Abstract
Review and analysis of continuous EEG recordings may be impeded by physiological artifacts such as blinks, eye movements, or cardiac activity. Spatial filters based on artifact and brain signal topographies can remove artifacts completely without distortion of relevant brain activity. The authors describe the basic principle of artifact correction by spatial filtering and they review different approaches to estimate artifact and brain signal topographies. The main focus is on the preselection approach, which is fast enough to be applied while paging through the segments of a digital EEG recording. Examples of real EEG segments, containing epileptic seizure activity or interictal spikes contaminated by artifacts, show that spatial filtering by preselection can be a useful tool during EEG review. Advantages and disadvantages of the different spatial filter approaches are discussed.Keywords
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