Restoring Latency-Variable ERP Components from Single Trials: A New Approach to ERP Analysis with Residue Iteration Decomposition (RIDE)

Guang Ouyang, Werner Sommer, Changsong Zhou*

*Corresponding author for this work

Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review

Abstract

Electroencephalography (EEG) is widely used in cognitive neuroscience as a brain signal with high temporal resolution. Strong latency variability pervades cognitive EEG responses across single trials, but is not taken into consideration by the conventional averaging method yielding event-related potentials (ERPs). This trial-to-trial variability may strongly smear and mix ERP components and diminish their amplitudes, impeding proper identification of the spatiotemporal representation of brain activities reflecting specific cognitive subprocesses. Furthermore, rich dynamic information about single trials is lost in averaged ERPs. Here we propose a model of ERPs as consisting of temporally overlapping components locked to different external events or varying in latency from trial to trial as a foundation for a new ERP decomposition and reconstruction method, residue iteration decomposition (RIDE). RIDE obtains latency-corrected waveforms and topography of the components, and retrieves the latencies and amplitudes of the separated components in single trials. RIDE was tested with real data and provides new perspectives for investigating brain–behavior relationships using EEG data in latency-corrected reconstructed ERPs, separated components, and information about variability in single trials.
Original languageEnglish
Title of host publicationAdvances in Cognitive Neurodynamics (V)
Subtitle of host publicationProceedings of the Fifth International Conference on Cognitive Neurodynamics - 2015
EditorsRubin Wang, Xiaochuan Pan
Place of PublicationSingapore
PublisherSpringer
Pages519-525
Number of pages7
Edition1st
ISBN (Electronic)9789811002076
ISBN (Print)9789811002052, 9789811091049
DOIs
Publication statusPublished - 30 Jan 2016
Event5th Fifth International Conference on Cognitive Neurodynamics, ICCN 2015 - Sanya, China
Duration: 3 Jun 20157 Jun 2015

Publication series

NameAdvances in Cognitive Neurodynamics
PublisherSpringer Singapore
ISSN (Print)2213-3569
ISSN (Electronic)2213-3577

Conference

Conference5th Fifth International Conference on Cognitive Neurodynamics, ICCN 2015
Country/TerritoryChina
CitySanya
Period3/06/157/06/15

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