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Psychometrika

, Volume 67, Issue 2, pp 299–313 | Cite as

Optimal measurement conditions for spatiotemporal eeg/meg source analysis

  • Hilde M. Huizenga
  • Dirk J. Heslenfeld
  • Peter C. M. Molenaar
Articles

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.

Key words

spatiotemporal EEG/MEG source analysis multiresponse nonlinear regression optimal design Fedorov exchange 

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Copyright information

© The Psychometric Society 2002

Authors and Affiliations

  • Hilde M. Huizenga
    • 1
  • Dirk J. Heslenfeld
    • 2
  • Peter C. M. Molenaar
    • 3
  1. 1.Department of PsychologyUniversity of AmsterdamAmsterdamThe Netherlands
  2. 2.University of Amsterdam andFree University of AmsterdamThe Netherlands
  3. 3.University of AmsterdamThe Netherlands

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