Deterioration of average evoked potential waveform due to asynchronous averaging and its compensation
- 1 March 1991
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. 38 (3) , 309-312
- https://doi.org/10.1109/10.133216
Abstract
The deterioration of the average due to the asynchronous sampling of evoked potential data is discussed. The asynchronous averaging in the frequency domain is analyzed, and a relationship between the fluctuating time and the degree of the deterioration is derived. By using this relationship, a required sampling rate is derived to ensure the accuracy of the averaging. In the case of coarse sampling, a compensation procedure for the asynchronous averaging is deduced, by which the compensated signal approaches the original signal as the number of averagings increases.<>Keywords
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