Compressive Sampling of EEG Signals with Finite Rate of Innovation
<p/> <p>Analyses of electroencephalographic signals and subsequent diagnoses can only be done effectively on long term recordings that preserve the signals' morphologies. Currently, electroencephalographic signals are obtained at Nyquist rate or higher, thus introducing redundancies...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2010-01-01
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| Series: | EURASIP Journal on Advances in Signal Processing |
| Online Access: | http://asp.eurasipjournals.com/content/2010/183105 |
| _version_ | 1828240466072567808 |
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| author | Poh Kok-Kiong Marziliano Pina |
| author_facet | Poh Kok-Kiong Marziliano Pina |
| author_sort | Poh Kok-Kiong |
| collection | DOAJ |
| description | <p/> <p>Analyses of electroencephalographic signals and subsequent diagnoses can only be done effectively on long term recordings that preserve the signals' morphologies. Currently, electroencephalographic signals are obtained at Nyquist rate or higher, thus introducing redundancies. Existing compression methods remove these redundancies, thereby achieving compression. We propose an alternative compression scheme based on a sampling theory developed for signals with a finite rate of innovation (FRI) which compresses electroencephalographic signals during acquisition. We model the signals as FRI signals and then sample them at their rate of innovation. The signals are thus effectively represented by a small set of Fourier coefficients corresponding to the signals' rate of innovation. Using the FRI theory, original signals can be reconstructed using this set of coefficients. Seventy-two hours of electroencephalographic recording are tested and results based on metrices used in compression literature and morphological similarities of electroencephalographic signals are presented. The proposed method achieves results comparable to that of wavelet compression methods, achieving low reconstruction errors while preserving the morphologiies of the signals. More importantly, it introduces a new framework to acquire electroencephalographic signals at their rate of innovation, thus entailing a less costly low-rate sampling device that does not waste precious computational resources.</p> |
| first_indexed | 2024-04-12T21:41:46Z |
| format | Article |
| id | doaj.art-0a904d64de8f45d3b476525967d28c43 |
| institution | Directory Open Access Journal |
| issn | 1687-6172 1687-6180 |
| language | English |
| last_indexed | 2024-04-12T21:41:46Z |
| publishDate | 2010-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Advances in Signal Processing |
| spelling | doaj.art-0a904d64de8f45d3b476525967d28c432022-12-22T03:15:44ZengSpringerOpenEURASIP Journal on Advances in Signal Processing1687-61721687-61802010-01-0120101183105Compressive Sampling of EEG Signals with Finite Rate of InnovationPoh Kok-KiongMarziliano Pina<p/> <p>Analyses of electroencephalographic signals and subsequent diagnoses can only be done effectively on long term recordings that preserve the signals' morphologies. Currently, electroencephalographic signals are obtained at Nyquist rate or higher, thus introducing redundancies. Existing compression methods remove these redundancies, thereby achieving compression. We propose an alternative compression scheme based on a sampling theory developed for signals with a finite rate of innovation (FRI) which compresses electroencephalographic signals during acquisition. We model the signals as FRI signals and then sample them at their rate of innovation. The signals are thus effectively represented by a small set of Fourier coefficients corresponding to the signals' rate of innovation. Using the FRI theory, original signals can be reconstructed using this set of coefficients. Seventy-two hours of electroencephalographic recording are tested and results based on metrices used in compression literature and morphological similarities of electroencephalographic signals are presented. The proposed method achieves results comparable to that of wavelet compression methods, achieving low reconstruction errors while preserving the morphologiies of the signals. More importantly, it introduces a new framework to acquire electroencephalographic signals at their rate of innovation, thus entailing a less costly low-rate sampling device that does not waste precious computational resources.</p>http://asp.eurasipjournals.com/content/2010/183105 |
| spellingShingle | Poh Kok-Kiong Marziliano Pina Compressive Sampling of EEG Signals with Finite Rate of Innovation EURASIP Journal on Advances in Signal Processing |
| title | Compressive Sampling of EEG Signals with Finite Rate of Innovation |
| title_full | Compressive Sampling of EEG Signals with Finite Rate of Innovation |
| title_fullStr | Compressive Sampling of EEG Signals with Finite Rate of Innovation |
| title_full_unstemmed | Compressive Sampling of EEG Signals with Finite Rate of Innovation |
| title_short | Compressive Sampling of EEG Signals with Finite Rate of Innovation |
| title_sort | compressive sampling of eeg signals with finite rate of innovation |
| url | http://asp.eurasipjournals.com/content/2010/183105 |
| work_keys_str_mv | AT pohkokkiong compressivesamplingofeegsignalswithfiniterateofinnovation AT marzilianopina compressivesamplingofeegsignalswithfiniterateofinnovation |