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Single-trial event-related potentials with wavelet denoising

Quian Quiroga, Rodrigo and Garcia, H. (2003) Single-trial event-related potentials with wavelet denoising. Clinical Neurophysiology, 114 (2). pp. 376-390. ISSN 1388-2457. doi:10.1016/S1388-2457(02)00365-6.

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The application of a recently proposed denoising implementation for obtaining event-related potentials (ERPs) at the single-trial level is shown. We study its performance in simulated data as well as in visual and auditory ERPs. For the simulated data, the method gives a significantly better reconstruction of the single-trial event-related responses in comparison with the original data and also in comparison with a reconstruction based on conventional Wiener filtering. Moreover, with wavelet denoising we obtain a significantly better estimation of the amplitudes and latencies of the simulated ERPs. For the real data, the method clearly improves the visualization of both visual and auditory single-trial ERPs. This allows the calculation of better averages as well as the study of systematic or unsystematic variations between trials. Since the method is fast and parameter free, it could complement the conventional analysis of ERPs.

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Additional Information:© 2002 Elsevier Science Ireland Ltd. Accepted 23 October 2002. We thank Dr Martin Schuermann for the VERP data and to Farshad Moradi and Zoltan Nadasdy for comments on the manuscript. RQQ acknowledges support from the Sloan-Swartz foundation.
Group:Koch Laboratory (KLAB)
Funding AgencyGrant Number
Sloan-Swartz FoundationUNSPECIFIED
Subject Keywords:Wavelet, Denoising, Wiener, Electroencephalogram, Evoked potential, Single-trial
Issue or Number:2
Record Number:CaltechAUTHORS:20130816-103221781
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:40496
Deposited By: KLAB Import
Deposited On:11 Jan 2008 23:48
Last Modified:09 Nov 2021 23:49

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