Optimal measurement conditions for spatiotemporal EEG/MEG source analysis

Hilde M. Huizenga, Dirk J. Heslenfeld, Peter C.M. Molenaar

Research output: Contribution to journalArticle

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Abstract

Electromagnetic source analysis yields estimates of the sources of the Electro- and/or MagnetoEncephaloGram (EEG/MEG) and thus generates a functional description of the human brain. The standard errors of the source estimates are influenced by the number and position of EEG/MEG sensors, by the number of time samples, and by the number of trials in which EEG/MEG is measured. Therefore, optimal design theory is applied to determine the required number and position of sensors, the required number of samples, and the required number of trials. To that end, the Fedorov exchange algorithm is extended to incorporate multi-response models. A simulation study and an empirical study on visual evoked potentials indicate that the proposed method is fast and reliable, and improves source precision considerably.

Original languageEnglish (US)
Pages (from-to)299-313
Number of pages15
JournalPsychometrika
Volume67
Issue number2
DOIs
StatePublished - Jan 1 2002

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All Science Journal Classification (ASJC) codes

  • Psychology(all)
  • Applied Mathematics

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