Imaging of oscillatory cortical activity using combined MEG and fMRI

Fa Hsuan Lin*, Tommi Raij, Jyrki Ahveninen, Seppo P. Ahlfors, Steven M. Stufflebeam, John W. Belliveau, Matti S. Hämäläinen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We introduce a method of combing MEG and fMRI to generate estimates of synchronized oscillations on the cortex. This method suppresses locations without concordant fMRI activity to avoid over estimation of phase-locking values. Simulations suggest 80% fMRI provides optimal detection power. We demonstrate this method in human somatomotor data to characterize beta-band oscillations.

Original languageEnglish (US)
Pages (from-to)19-22
Number of pages4
JournalInternational Congress Series
Volume1300
DOIs
StatePublished - Jun 2007

Keywords

  • Beta-band
  • MEG
  • Oscillation
  • Phase locking values
  • Synchronization
  • fMRI

ASJC Scopus subject areas

  • Medicine(all)

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