Spectral distance for ARMA models applied to electroencephalogram for early detection of hypoxia
Artikel i vetenskaplig tidskrift, 2006

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.

Swine

*Algorithms

Sensitivity and Specificity

Computer-Assisted/*methods

Electroencephalography/*methods

Newborn

Animals

Automated/methods

Artificial Intelligence

Animals

Pattern Recognition

Reproducibility of Results

Regression Analysis

Diagnosis

Hypoxia

Brain/*diagnosis/*physiopathology

Författare

Nils Löfgren

Chalmers, Signaler och system

Kaj Lindecrantz

Högskolan i Borås

Anders Flisberg

Göteborgs universitet

Ralph Bågenholm

Göteborgs universitet

Ingemar Kjellmer

Göteborgs universitet

M. Thordstein

Sahlgrenska universitetssjukhuset

Journal of Neural Engineering

1741-2560 (ISSN)

Vol. 3 227-34

Ämneskategorier

MEDICIN OCH HÄLSOVETENSKAP

DOI

10.1088/1741-2560/3/3/005