Waveform and latency estimation from neuroelectric signals using the bispectrum.
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.
Nakamura
M
M
Biomedical Engineering Unit, Tokai University School of Medicine, Japan.
D004569:Electroencephalography; D005071:Evoked Potentials; D005583:Fourier Analysis; D011930:Reaction Time / Q000502:physiology; D012815:Signal Processing, Computer-Assisted