Improving the performance of two-state mental task brain-computer interface design using linear discriminant classifier
The purpose of this study is to motivate the use of the simpler Linear Discriminant (LD) classifier as compared to the commonly used Multilayer-perceptron-backpropagation (MLP-BP) neural network for Brain Computer Interface (BCI) design. We investigated the performances of MLP-BP and LD classifiers...
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| Format: | Article |
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2005
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| Online Access: | http://shdl.mmu.edu.my/2371/ |
| _version_ | 1848790037687173120 |
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| author | Palaniappan, , R Huan, , NJ |
| author_facet | Palaniappan, , R Huan, , NJ |
| author_sort | Palaniappan, , R |
| building | MMU Institutional Repository |
| collection | Online Access |
| description | The purpose of this study is to motivate the use of the simpler Linear Discriminant (LD) classifier as compared to the commonly used Multilayer-perceptron-backpropagation (MLP-BP) neural network for Brain Computer Interface (BCI) design. We investigated the performances of MLP-BP and LD classifiers for mental task based BCI design. In the experimental study, EEG signals from five mental tasks were recorded from four subjects and the classification performances of different combinations of two mental tasks were studied for each subject. Two different AR models were used to compute the features from the electroencephalogram signals: Burg's algorithm (ARB) and Least Square algorithm (ARLS). The results showed that in most cases, LD classifier gave superior classification performance as compared to MLP-BP, with reduced computational complexity. However, the best mental tasks for each subject were the same using both classifiers. ARLS gave the best performance (93.10%) using MLP-BP and (97.00%) using LD. As the best mental task combinations varied between subjects, we conclude that for different subjects, proper selection of mental tasks and feature extraction methods would be essential for a BCI design. |
| first_indexed | 2025-11-14T18:06:15Z |
| format | Article |
| id | mmu-2371 |
| institution | Multimedia University |
| institution_category | Local University |
| last_indexed | 2025-11-14T18:06:15Z |
| publishDate | 2005 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | mmu-23712011-08-23T01:26:34Z http://shdl.mmu.edu.my/2371/ Improving the performance of two-state mental task brain-computer interface design using linear discriminant classifier Palaniappan, , R Huan, , NJ QA75.5-76.95 Electronic computers. Computer science The purpose of this study is to motivate the use of the simpler Linear Discriminant (LD) classifier as compared to the commonly used Multilayer-perceptron-backpropagation (MLP-BP) neural network for Brain Computer Interface (BCI) design. We investigated the performances of MLP-BP and LD classifiers for mental task based BCI design. In the experimental study, EEG signals from five mental tasks were recorded from four subjects and the classification performances of different combinations of two mental tasks were studied for each subject. Two different AR models were used to compute the features from the electroencephalogram signals: Burg's algorithm (ARB) and Least Square algorithm (ARLS). The results showed that in most cases, LD classifier gave superior classification performance as compared to MLP-BP, with reduced computational complexity. However, the best mental tasks for each subject were the same using both classifiers. ARLS gave the best performance (93.10%) using MLP-BP and (97.00%) using LD. As the best mental task combinations varied between subjects, we conclude that for different subjects, proper selection of mental tasks and feature extraction methods would be essential for a BCI design. 2005 Article NonPeerReviewed Palaniappan, , R and Huan, , NJ (2005) Improving the performance of two-state mental task brain-computer interface design using linear discriminant classifier. Eurocon 2005: The International Conference on Computer as a Tool, Vol 1 and 2 , Proceedings . pp. 409-412. |
| spellingShingle | QA75.5-76.95 Electronic computers. Computer science Palaniappan, , R Huan, , NJ Improving the performance of two-state mental task brain-computer interface design using linear discriminant classifier |
| title | Improving the performance of two-state mental task brain-computer interface design using linear discriminant classifier |
| title_full | Improving the performance of two-state mental task brain-computer interface design using linear discriminant classifier |
| title_fullStr | Improving the performance of two-state mental task brain-computer interface design using linear discriminant classifier |
| title_full_unstemmed | Improving the performance of two-state mental task brain-computer interface design using linear discriminant classifier |
| title_short | Improving the performance of two-state mental task brain-computer interface design using linear discriminant classifier |
| title_sort | improving the performance of two-state mental task brain-computer interface design using linear discriminant classifier |
| topic | QA75.5-76.95 Electronic computers. Computer science |
| url | http://shdl.mmu.edu.my/2371/ |