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Brain Signal AnalysisAdvances in Neuroelectric and Neuromagnetic Methods$
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Todd C. Handy

Print publication date: 2009

Print ISBN-13: 9780262013086

Published to MIT Press Scholarship Online: August 2013

DOI: 10.7551/mitpress/9780262013086.001.0001

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PRINTED FROM MIT PRESS SCHOLARSHIP ONLINE (www.mitpress.universitypressscholarship.com). (c) Copyright The MIT Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in MITSO for personal use.date: 13 June 2021

Principles of Topographic Analyses for Electrical Neuroimaging

Principles of Topographic Analyses for Electrical Neuroimaging

Chapter:
(p.21) 2 Principles of Topographic Analyses for Electrical Neuroimaging
Source:
Brain Signal Analysis
Author(s):

Murray M. Micah

Marzia De Lucia

Denis Brunet

Christoph M. Michel

Publisher:
The MIT Press
DOI:10.7551/mitpress/9780262013086.003.0002

This chapter presents a new approach to topographic mapping using reference-independent spatial information in high-density electrode montages, and analyzes the pitfalls and limitations of analyzing event-related potential (ERP) voltage waveforms due to their being dependent on the choice of the reference electrode(s). It reports the methods for identifying and quantifying topographic modulations. The chapter shows that the analysis used for identifying the periods of topographic stability within and between experimental conditions serves to determine the sequence, duration, and explanatory power of the “letters” in the ERP. It suggests that information-rich analyses can be easy to use and interpret.

Keywords:   topographic mapping, event-related potential, voltage waveforms, topographic stability, electrode montages, spatial information

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