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Related Experiment Video

Updated: Jun 23, 2026

Translational Brain Mapping at the University of Rochester Medical Center: Preserving the Mind Through Personalized Brain Mapping
13:12

Translational Brain Mapping at the University of Rochester Medical Center: Preserving the Mind Through Personalized Brain Mapping

Published on: August 12, 2019

Comparing MEG and fMRI views to naming actions and objects.

Mia Liljeström1, Annika Hultén, Lauri Parkkonen

  • 1Brain Research Unit, Low Temperature Laboratory, Helsinki University of Technology, Espoo, Finland. mli@neuro.hut.fi

Human Brain Mapping
|April 21, 2009
PubMed
Summary

This study compared magnetoencephalography (MEG) and functional magnetic resonance imaging (fMRI) for brain activity during picture naming. Results showed good agreement between MEG and fMRI at the group level, aiding interpretation of cognitive function studies.

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Neuroimaging

Background:

  • Neuroimaging studies often use single modalities like fMRI, EEG, or MEG.
  • Combining modalities like fMRI-EEG or MEG-fMRI aims to capture both timing and location of brain activity.
  • Previous direct comparisons focused mainly on low-level sensory processing.

Purpose of the Study:

  • To directly compare magnetoencephalography (MEG) and functional magnetic resonance imaging (fMRI) in high-level cognitive tasks.
  • To assess the convergence of MEG (timing and location) and fMRI (location) data during picture naming.
  • To provide insights for reconciling discrepancies between MEG and fMRI studies.

Main Methods:

  • Simultaneous or separate session recordings of MEG and fMRI data from 11 subjects.

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fMRI Validation of fNIRS Measurements During a Naturalistic Task
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fMRI Validation of fNIRS Measurements During a Naturalistic Task

Published on: June 15, 2015

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Last Updated: Jun 23, 2026

Translational Brain Mapping at the University of Rochester Medical Center: Preserving the Mind Through Personalized Brain Mapping
13:12

Translational Brain Mapping at the University of Rochester Medical Center: Preserving the Mind Through Personalized Brain Mapping

Published on: August 12, 2019

fMRI Validation of fNIRS Measurements During a Naturalistic Task
10:36

fMRI Validation of fNIRS Measurements During a Naturalistic Task

Published on: June 15, 2015

  • Picture naming task involving actions and objects.
  • MEG data analyzed using equivalent current dipoles and minimum norm estimate.
  • fMRI data analyzed using standard random-effect contrast analysis.

    • Main Results:

    • Good convergence observed between MEG and fMRI at the group level for both activation patterns and task effects.
    • Both modalities localized to comparable cortical regions.
    • Some systematic discrepancies were noted, particularly at the individual subject level.

    Conclusions:

    • MEG and fMRI show considerable agreement in localizing brain activity for high-level cognitive functions like picture naming.
    • The findings support the reconciliation of results from independent fMRI and MEG studies.
    • This comparative analysis is valuable for understanding cognitive processes using multimodal neuroimaging.