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- Publisher Website: 10.1007/BF02345294
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- PMID: 11465894
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Article: Comparison of time-frequency distribution techniques for analysis of spinal somatosensory evoked potential
Title | Comparison of time-frequency distribution techniques for analysis of spinal somatosensory evoked potential |
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Authors | |
Keywords | Adaptive spectrogram (ADS) Choi-Williams distribution (CWD) Cone shaped distribution (CSD) Intraoperative spinal cord monitoring Short time Fourier transform (STFT) Spinal somatosensory evoked potential (SSEP) Time-frequency analysis (TFA) Wigner-Ville distribution (WVD) |
Issue Date | 2001 |
Publisher | Springer Verlag. The Journal's web site is located at http://www.springer.com/sgw/cda/frontpage/0,11855,4-40109-70-67951916-0,00.html?changeHeader=true |
Citation | Medical And Biological Engineering And Computing, 2001, v. 39 n. 3, p. 375-380 How to Cite? |
Abstract | Spinal somatosensory evoked potential (SSEP) has been employed to monitor the integrity of the spinal cord during surgery. To detect both temporal and spectral changes in SSEP waveforms, an investigation of the application of time-frequency analysis (TFA) techniques was conducted. SSEP signals from 30 scoliosis patients were analysed using different techniques; short time Fourier transform (STFT), Wigner-Ville distribution (WVD), Choi-Williams distribution (CWD), coneshaped distribution (CSD) and adaptive spectrogram (ADS). The time-frequency distributions (TFD) computed using these methods were assessed and compared with each other. WVD, ADS, CSD and CWD showed better resolution than STFT. Comparing normalised peak widths, CSD showed the sharpest peak width (0.13 ± 0.1) in the frequency dimension, and a mean peak width of 0.70 ± 0.12 in the time dimension. Both WVD and CWD produced cross-term interference, distorting the TFA distribution, but this was not seen with CSD and ADS. CSD appeared to give a lower mean peak power bias (10.3% ± 6.2%) than ADS (41.8% ± 19.6%). Application of the CSD algorithm showed both good resolution and accurate spectrograms, and is therefore recommended as the most appropriate TFA technique for the analysis of SSEP signals. |
Persistent Identifier | http://hdl.handle.net/10722/170031 |
ISSN | 2021 Impact Factor: 3.079 2020 SCImago Journal Rankings: 0.593 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Hu, Y | en_US |
dc.contributor.author | Luk, KDK | en_US |
dc.contributor.author | Lu, WW | en_US |
dc.contributor.author | Holmes, A | en_US |
dc.contributor.author | Leong, JCY | en_US |
dc.date.accessioned | 2012-10-30T06:04:51Z | - |
dc.date.available | 2012-10-30T06:04:51Z | - |
dc.date.issued | 2001 | en_US |
dc.identifier.citation | Medical And Biological Engineering And Computing, 2001, v. 39 n. 3, p. 375-380 | en_US |
dc.identifier.issn | 0140-0118 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/170031 | - |
dc.description.abstract | Spinal somatosensory evoked potential (SSEP) has been employed to monitor the integrity of the spinal cord during surgery. To detect both temporal and spectral changes in SSEP waveforms, an investigation of the application of time-frequency analysis (TFA) techniques was conducted. SSEP signals from 30 scoliosis patients were analysed using different techniques; short time Fourier transform (STFT), Wigner-Ville distribution (WVD), Choi-Williams distribution (CWD), coneshaped distribution (CSD) and adaptive spectrogram (ADS). The time-frequency distributions (TFD) computed using these methods were assessed and compared with each other. WVD, ADS, CSD and CWD showed better resolution than STFT. Comparing normalised peak widths, CSD showed the sharpest peak width (0.13 ± 0.1) in the frequency dimension, and a mean peak width of 0.70 ± 0.12 in the time dimension. Both WVD and CWD produced cross-term interference, distorting the TFA distribution, but this was not seen with CSD and ADS. CSD appeared to give a lower mean peak power bias (10.3% ± 6.2%) than ADS (41.8% ± 19.6%). Application of the CSD algorithm showed both good resolution and accurate spectrograms, and is therefore recommended as the most appropriate TFA technique for the analysis of SSEP signals. | en_US |
dc.language | eng | en_US |
dc.publisher | Springer Verlag. The Journal's web site is located at http://www.springer.com/sgw/cda/frontpage/0,11855,4-40109-70-67951916-0,00.html?changeHeader=true | en_US |
dc.relation.ispartof | Medical and Biological Engineering and Computing | en_US |
dc.subject | Adaptive spectrogram (ADS) | - |
dc.subject | Choi-Williams distribution (CWD) | - |
dc.subject | Cone shaped distribution (CSD) | - |
dc.subject | Intraoperative spinal cord monitoring | - |
dc.subject | Short time Fourier transform (STFT) | - |
dc.subject | Spinal somatosensory evoked potential (SSEP) | - |
dc.subject | Time-frequency analysis (TFA) | - |
dc.subject | Wigner-Ville distribution (WVD) | - |
dc.subject.mesh | Evoked Potentials, Somatosensory | en_US |
dc.subject.mesh | Humans | en_US |
dc.subject.mesh | Monitoring, Intraoperative - Methods | en_US |
dc.subject.mesh | Scoliosis - Surgery | en_US |
dc.subject.mesh | Signal Processing, Computer-Assisted | en_US |
dc.subject.mesh | Spinal Cord - Physiopathology | en_US |
dc.title | Comparison of time-frequency distribution techniques for analysis of spinal somatosensory evoked potential | en_US |
dc.type | Article | en_US |
dc.identifier.email | Hu, Y:yhud@hku.hk | en_US |
dc.identifier.email | Luk, KDK:hcm21000@hku.hk | en_US |
dc.identifier.email | Lu, WW:wwlu@hku.hk | en_US |
dc.identifier.authority | Hu, Y=rp00432 | en_US |
dc.identifier.authority | Luk, KDK=rp00333 | en_US |
dc.identifier.authority | Lu, WW=rp00411 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1007/BF02345294 | - |
dc.identifier.pmid | 11465894 | - |
dc.identifier.scopus | eid_2-s2.0-0034953803 | en_US |
dc.identifier.hkuros | 58594 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0034953803&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 39 | en_US |
dc.identifier.issue | 3 | en_US |
dc.identifier.spage | 375 | en_US |
dc.identifier.epage | 380 | en_US |
dc.identifier.isi | WOS:000169732400016 | - |
dc.publisher.place | Germany | en_US |
dc.identifier.scopusauthorid | Hu, Y=7407116091 | en_US |
dc.identifier.scopusauthorid | Luk, KDK=7201921573 | en_US |
dc.identifier.scopusauthorid | Lu, WW=7404215221 | en_US |
dc.identifier.scopusauthorid | Holmes, A=7401687268 | en_US |
dc.identifier.scopusauthorid | Leong, JCY=35560782200 | en_US |
dc.identifier.issnl | 0140-0118 | - |