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Investigation and comparison of some models for removing ocular artefacts from EEG signals |
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| Authors: | E. C. Ifeachor B. W. Jervis E. M. Allen E. L. Morris D. E. Wright N. R. Hudson |
| Affiliation: | 1. Department of Electrical & Electronic Engineering, Plymouth Polytechnic, Drake Circus, PL4 8AA, Plymouth, Devon, UK 2. Department of Electrical & Electronic Engineering, Sheffield City Polytechnic, Pond Street, S1 1WB, Sheffield, UK 3. Department of Neurosciences, Freedom Fields Hospital, Plymouth, Devon, UK 4. Department of Engineering Science, University of Exeter, EX4 4QJ, Exeter, Devon, UK 5. Department of Mathematics & Statistics, Plymouth Polytechnic, Drake Circus, PL4 8AA, Plymouth, Devon, UK |
| Abstract: | An investigation of ocular artefacts (OAs) in the human electroencephalogram (EEG) to quantify the effectiveness of OA removal, and to find the most effective model for removing OAs online is described. It was found unnecessary to use the vertical and horizontal EOGs of both eyes, although more than one EOG signal is required for adequate OA removal. The model using the vertical right EOG and the two horizontal EOGs was the best overall, but in most cases the use of only the vertical and horizontal right EOGs was sufficient. OAs were not completely removed by any of the models investigated, suggesting that more complex models are necessary. |
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