Subscribe to RSS
Please copy the URL and add it into your RSS Feed Reader.
https://www.thieme-connect.de/rss/thieme/en/10.1055-s-00035037.xml
Methods Inf Med 1994; 33(01): 32-34
DOI: 10.1055/s-0038-1634992
DOI: 10.1055/s-0038-1634992
Original Article
Waveform and Latency Estimation from Neuroelectric Signals Using the Bispectrum
Further Information
Publication History
Publication Date:
08 February 2018 (online)
Abstract:
A technique based on bispectra and cross-bispectra is described for estimating waveform and latency from a set of noisy signals with variable latency. Waveform estimation is performed by averaging bispectra of observed noisy signals. Latency estimation is performed by using the product function of a function derived from the cross-bispectrum and the cross-correlation. The method is numerically assessed by simulations, using a signal with uniformly distributed latency and computer-generated noise sequences.
-
REFERENCES
- 1 Aunon JI, McGillem CD, Childers DG. Signal processing in evoked potential research: Averaging and modeling. In: Critical Review in Biomedical Engineering. Cleveland OH: CRC Press; 1981. 05 323-67.
- 2 Nakamura M. Waveform estimation from noisy signals with variable signal delay using bispectrum averaging. IEEE Trans Biomed Eng 1993; 40: 118-27.
- 3 Lohmann AW, Wirnitzer B. Triple correlations. Proc IEEE 1984; 72: 899-901.
- 4 Matsuoka T, Ulrych TJ. Phase estimation using the bispectrum. Proc IEEE 1984; 72: 1403-11.
- 5 Giannakas GB. Signal reconstruction from multiple correlations: Frequency- and time-domain approaches. J Opt Soc Am A 1989; 06: 682-97.
- 6 Marron JC, Sanches PP, Sullivan RC. Unwrapping algorithm for least-squares phase recovery from the modulo 2πbi-spectrum phase. J opt Sc Am A 1990; 07: 14-20.
- 7 Sundaramoorthy G, Raghuveer MR, Dianat SA. Bispectral reconstruction of signals in noise: Amplitude reconstruction issues. IEEE Trans Acoust Speech Signal Processing 1990; 38: 1297-306.
- 8 Nikias CL, Raghuveer MR. Bispectrum estimation: A digital signal processing framework. Proc IEEE 1987; 75: 869-91.
- 9 Nikias CL, Pan R. Time delay estimation in unknown Gaussian spatially correlated noise. IEEE Trans Acoust Speech Signal Processing 1988; 36: 1706-14.
- 10 Thakor NV. Adaptive filtering of evoked potentials. IEEE Trans Biomed Eng 1987; 34: 6-12.
- 11 Carter GC. Coherence and time delay estimation. Proc IEEE 1987; 75: 236-54.