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In present study, a novel and robust technique is presented to eliminate ocular artifacts from EEG signals automatically. Independent component analysis (ICA) ...
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What is artifact removal in EEG?
The fundamental process for eliminating unwanted signals in EEG is the regression method [7]. This method described the amplitude relation of reference and estimated artifacts from EEG; Thereby, this algorithm requires external reference signals such as ECG, EOG, and EMG to segregate the various undesired signals.
What are ocular artifacts?
The ocular artifacts that contaminate the EEG derive from the potential difference between the cornea and the fundus of the eye. This corneofundal or corneoretinal potential can be considered as an equivalent dipole with its positive pole directed toward the cornea.
What causes artifacts in EEG?
Electrical artifact most commonly arises from interference from the 60 Hz electrical activity (in the USA; 50 Hz in Europe and elsewhere) that that runs through wires; so, it can be caused by anything from an electrical appliance to a cell phone charging, though most modern EEG equipment is quite good at minimizing it.
Feb 26, 2019 · Several methods have been proposed to remove artifacts, but the research on artifact removal continues to be an open problem. This paper tends ...
In this paper, a combined ICA and regression-based method is developed for automatic identification and removal/reduction of ocular artifacts from EEG data.
This method uses wavelet transformation to decompose the contaminated EEG signals into series of sub-bands at first. Then a thresholding function is used to ...
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This article presents a method based on blind source separation. (BSS) for automatic removal of electroocular artifacts from EEG data. BBS is a signal- ...
Jun 25, 2021 · It can effectively remove the EOG artifacts when causes less EEG distortion and has less algorithm complexity at the same time. It helps to ...
Abstract. Electroencephalogram (EEG) signals are often contaminated by ocular artifacts. In present study, a novel and robust technique is presented to ...
Sep 10, 2009 · Epochs contaminated by ocular artifacts can be manually excised, but at the cost of intensive human labor and substantial data loss. The ...
Automatic removal of ocular artifacts in the EEG without a reference EOG channel. In 7th Nordic Signal Processing Symposium NORSIG, Reykjavik, Iceland.
Apr 6, 2021 · Approach. In this study, an automatic ocular artifact removal (AOAR) method for EEG signals is proposed based on non-negative matrix ...
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