{"title":"Respiration affects on P wave alignment and averaging","authors":"M. Saki, Y. Z. Ider, B. Ozin, A. Oto","doi":"10.1109/IEMBS.1992.5761105","DOIUrl":null,"url":null,"abstract":"Root-mean-square values of the residual signals between a P wave template and individual P waves were computed and a tachogram was made. Using Autoregressive (AR) modelling, a major spectral peak was observed at 0.2 Hz for both this tachogram and the respiratory volume signal. A similiar spectrum was obtained from the RMS tachogram of the isoelectric signal segments prior to the P waves. When the lead signals were filtered (6–12.5 Hz), the energy in the RMS tachogram of the isoelectric region almost vanished. On the other hand, volume gated signal averaging of the P waves led to two distinct averages corresponding to high and low respiratory volume. The difference was in the form of up to 10% amplitude scaling.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"75 1","pages":"553-554"},"PeriodicalIF":0.0000,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IEMBS.1992.5761105","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Root-mean-square values of the residual signals between a P wave template and individual P waves were computed and a tachogram was made. Using Autoregressive (AR) modelling, a major spectral peak was observed at 0.2 Hz for both this tachogram and the respiratory volume signal. A similiar spectrum was obtained from the RMS tachogram of the isoelectric signal segments prior to the P waves. When the lead signals were filtered (6–12.5 Hz), the energy in the RMS tachogram of the isoelectric region almost vanished. On the other hand, volume gated signal averaging of the P waves led to two distinct averages corresponding to high and low respiratory volume. The difference was in the form of up to 10% amplitude scaling.