ON AR MODELING FOR MEG SPECTRAL ESTIMATION, DATA-COMPRESSION AND CLASSIFICATION

被引:2
作者
ANGELIDOU, A
STRINTZIS, MG
PANAS, S
ANOGIANAKIS, G
机构
[1] ARISTOTELIAN UNIV SALONIKA,FAC ELECT ENGN,DEPT TELECOMMUN,SALONIKA,GREECE
[2] ARISTOTELIAN UNIV SALONIKA,FAC MED,DEPT EXPTL PHYSIOL,SALONIKA,GREECE
关键词
MEG SIGNALS; AR MODELING; SPECTRAL ESTIMATION; DATA COMPRESSION; CLASSIFICATION;
D O I
10.1016/0010-4825(92)90038-O
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
The use of the autoregressive (AR) model for magnetoencephalogram (MEG) processing is examined and compared to other methods. Spectral estimation, classification and data compression of MEG signals are studied. In application to spectral estimation the AR model is compared to the classical modified periodogram method. Also, AR modelling appears to perform very successfully when used for the classification of normal and epileptic MEG signals. Finally, the 17:1 to 23:1 data compression achieved by AR modelling, along with the above-mentioned advantages, render it suitable for storage applications. For comparison, the method of feature selection via orthogonal expansion is used as a tool to achieve data reduction. It is seen that while effective, this is less drastic than the compression of data volume achieved by AR modelling.
引用
收藏
页码:379 / 387
页数:9
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