Quantification of the pseudo-periodicity in EEG.
Some EEG signals possess pseudo-periodicity, which is difficult to identify and quantify. This paper points out the problems and proposes a straightforward approach for analyzing this long-term, extra low-rate rhythmicity (the fundamental frequency). The effect of pseudo periodicity on the Fourier s...
| Published in: | American Journal of Electroneurodiagnostic Technology Vol. 40; no. 1; pp. 25 - 41 |
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| Main Authors: | , |
| Format: | CEU equations & formulas exam questions research tables/charts tracings Journal Article |
| Published: |
Taylor & Francis Ltd
2000 Mar
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=107111977&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 107111977 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 1086508X GJ9 jtl: American Journal of Electroneurodiagnostic Technology issn: 1086508X maglogo: N pubinfo: dt: 2000 Mar vid: 40 iid: 1 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 107111977 107111977 2000036597 107111977 ppf: 25 ppct: 16 formats: tig: atl: Quantification of the pseudo-periodicity in EEG. aug: au: Lo P Lee Y affil: Department of Electrical and Control Engineering, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu, Taiwan, R.O.C. sug: subj: Electroencephalography Periodicity Seizures Diagnosis Funding Source Education, Continuing (Credit) Human ab: Some EEG signals possess pseudo-periodicity, which is difficult to identify and quantify. This paper points out the problems and proposes a straightforward approach for analyzing this long-term, extra low-rate rhythmicity (the fundamental frequency). The effect of pseudo periodicity on the Fourier spectrum is investigated. To process the enormous number of data points often encountered in this kind of signal, we adopt the down-sampling scheme in the field of multi-rate signal processing. In addition, waveform rectification is introduced to enhance the capability in detecting the number of pseudo periods. The experimental results demonstrate that the Fourier analysis, in combination with the down-sampling and amplitude-rectified processes, is feasible for quantifying the fundamental frequency and pseudo period of the EEG. pubtype: Academic Journal doctype: CEU equations & formulas exam questions research tables/charts tracings Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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