Spectral distance for ARMA models applied to electroencephalogram for early detection of hypoxia

Löfgren, Nils,1969Chalmers tekniska högskola,Chalmers University of Technology,School of Engineering, Uiversity of Borås (författare)

QC 20120222
A novel measure of spectral distance is presented, which is inspired by the prediction residual parameter presented by Itakura in 1975, but derived from frequency domain data and extended to include autoregressive moving average (ARMA) models. This new algorithm is applied to electroencephalogram (EEG) data from newborn piglets exposed to hypoxia for the purpose of early detection of hypoxia. The performance is evaluated using parameters relevant for potential clinical use, and is found to outperform the Itakura distance, which has proved to be useful for this application. Additionally, we compare the performance with various algorithms previously used for the detection of hypoxia from EEG. Our results based on EEG from newborn piglets show that some detector statistics divert significantly from a reference period less than 2 min after the start of general hypoxia. Among these successful detectors, the proposed spectral distance is the only spectral-based parameter. It therefore appears that spectral changes due to hypoxia are best described by use of an ARMA- model-based spectral estimate, but the drawback of the presented method is high computational effort.

Lindecrantz, Kaj,1951Högskolan i Borås,University of Borås,School of Engineering, University of Borås(Swepub:kth)u1kuwno6 (författare)
Flisberg, Anders,1958Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper,Institute of Clinical Sciences,University of Gothenburg,Department of Pediatrics, Queen Silvia Children's Hospital, Sahlgrenska University Hospital-Östra(Swepub:gu)xflian (författare)
Bågenholm, Ralph,1956Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper,Institute of Clinical Sciences,University of Gothenburg,Department of Pediatrics, Queen Silvia Children's Hospital, Sahlgrenska University Hospital-Östra (författare)
Kjellmer, Ingemar,1935Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper,Institute of Clinical Sciences,University of Gothenburg,Department of Pediatrics, Queen Silvia Children's Hospital, Sahlgrenska University Hospital-Östra(Swepub:gu)xkjing (författare)
Thordstein, MagnusSahlgrenska universitetssjukhuset,Sahlgrenska University Hospital,Department of Clinical Neurophysiology, Institute of Neuroscience and Physiology, Sahlgrenska University Hospital, Göteborg, Sweden(Swepub:gu)xthmag (författare)
Chalmers tekniska högskolaSchool of Engineering, Uiversity of Borås (creator_code:org_t)

Ingår i:Journal of Neural Engineering: IOP Publishing3:3, s. 227-341741-25601741-2552

Av författaren/redakt...: Löfgren, Nils, 1 ...; Lindecrantz, Kaj ...; Flisberg, Anders ...; Bågenholm, Ralph ...; Kjellmer, Ingema ...; Thordstein, Magn ...

Om ämnet

Av lärosätet: Göteborgs universitet; Chalmers tekniska högskola; Kungliga Tekniska Högskolan

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