Two-dimensional spectral processing of sequential evoked potentials

The processing of sequential evoked potentials (EPs) is investigated using two-dimensional processing techniques. Two-dimensional EP arrays or images are formed by stacking sequential recordings. Processing is accomplished in the frequency domain by 2-D low-pass filtering using Gaussian filters. Aud...

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Bibliographic Details
Published in:Medical & biological engineering & computing 1996-05, Vol.34 (3), p.239-243
Main Authors: PAIGE, A. L, ÖZDAMAR, Ö, DELGADO, R. E
Format: Article
Language:English
Subjects:
Biological and medical sciences
Computerized, statistical medical data processing and models in biomedicine
Evoked Potentials, Auditory, Brain Stem
Humans
Medical computing and teaching
Medical sciences
Monitoring, Intraoperative - methods
Signal Processing, Computer-Assisted
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Summary:The processing of sequential evoked potentials (EPs) is investigated using two-dimensional processing techniques. Two-dimensional EP arrays or images are formed by stacking sequential recordings. Processing is accomplished in the frequency domain by 2-D low-pass filtering using Gaussian filters. Auditory brainstem responses (ABRs), which are the early auditory EPs, are used to investigate the effects of the 2-D filtering on real data. Gaussian filtering improves signal-to-noise ratios by reducing high frequency noise effectively in both intra-EP and inter-EP dimensions. Applications to intra-operative monitoring are simulated with real ABR data.
ISSN:0140-0118
1741-0444
DOI:10.1007/BF02520080