Randomization tests for ERP topographies and whole spatiotemporal data matrices

In ERP studies, the comparison of topographies (multichannel measurements) or whole spatiotemporal data matrices (multichannel time series of measurements), the classical statistical tests very often cannot be used. It is argued that, for these comparisons, randomization tests are an excellent alter...

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Bibliographic Details
Published in:Psychophysiology 2004-01, Vol.41 (1), p.142-151
Main Author: Maris, Eric
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Cerebral Cortex - drug effects
Cerebral Cortex - physiology
Data Interpretation, Statistical
Diazepam - pharmacology
Electroencephalography - statistics & numerical data
Electrophysiological data
Evoked Potentials - drug effects
Evoked Potentials - physiology
Evoked Potentials, Auditory - drug effects
Family-wise error rate
Fundamental and applied biological sciences. Psychology
Humans
Mathematical Computing
Methodology. Experimentation
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Psychometrics. Statistics. Methodology
Randomization tests
Rats
Rats, Wistar
Reading
Reproducibility of Results
Signal Processing, Computer-Assisted
Spatiotemporal data
Statistics. Mathematics
Topographies
Verbal Learning - physiology
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Summary:In ERP studies, the comparison of topographies (multichannel measurements) or whole spatiotemporal data matrices (multichannel time series of measurements), the classical statistical tests very often cannot be used. It is argued that, for these comparisons, randomization tests are an excellent alternative. It is also argued that the randomization test is superior to another resampling method, the bootstrap, because exact probability statements (e.g., p values) can be made. A review is given of the literature on randomization tests designed for electrophysiological data. New randomization tests are presented and applied to two data sets, one coming from a psychopharmacological experiment and the other from an ERP experiment in visual word recognition.
ISSN:0048-5772
1469-8986
DOI:10.1111/j.1469-8986.2003.00139.x